We lease commercial office space in two buildings in West Des Moines, Iowa. The lease for our home office building expires on November 30, 2026. We have two separate leases for additional space in a building in West Des Moines, one which expires on March 15, 2023 and the other which expires on August 1, 2025. We believe these facilities are suitable and adequate for our current business operations.
(a)In addition to net income available to common stockholders, we have consistently utilized non-GAAP operating income available to common stockholders and non-GAAP operating income available to common stockholders per common share-assuming dilution, non-GAAP financial measures commonly used in the life insurance industry, as economic measures to evaluate our financial performance. Non-GAAP operating income available to common stockholders equals net income available to common stockholders adjusted to eliminate the impact of items that fluctuate from year to year in a manner unrelated to core operations, and we believe measures excluding their impact are useful in analyzing operating trends. The most significant adjustments to arrive at non-GAAP operating income available to common stockholders eliminate the impact of fair value accounting for our fixed index annuity business. These adjustments are not economic in nature but rather impact the timing of reported results. In addition, 2017 includes a $35.9 million adjustment to arrive at non-GAAP operating income available to common stockholders resulting from the Tax Cuts and Jobs Act of 2017, which was enacted on December 22, 2017 and required a revaluation of our net deferred tax assets from 35% to 21%. We believe the combined presentation and evaluation of non-GAAP operating income available to common stockholders together with net income available to common stockholders provides information that may enhance an investor's understanding of our underlying results and profitability. The amounts included in the reconciliation of net income available to common stockholders to non-GAAP operating income available to common stockholders are presented net of related adjustments to amortization of deferred sales inducements and deferred policy acquisition costs.
(c)Total common stockholders’ equity, total common stockholders' equity excluding AOCI and total common stockholders' equity excluding AOCI and the net impact of fair value accounting for derivatives and embedded derivatives, non-GAAP financial measures, exclude equity available to preferred stockholders. Total common stockholders’ equity and book value per common share excluding AOCI, non-GAAP financial measures, are based on common stockholders’ equity excluding the effect of AOCI. Since AOCI fluctuates from quarter to quarter due to unrealized changes in the fair value of available for sale securities, we believe these non-GAAP financial measures provide useful supplemental information. Total common stockholders' equity and book value per common share excluding AOCI and the net impact of fair value accounting for derivatives and embedded derivatives, non-GAAP financial measures, are based on common stockholders' equity excluding AOCI and the net impact of fair value accounting for derivatives and embedded derivatives. Since the net impact of fair value accounting for our derivatives and embedded derivatives fluctuates from quarter to quarter and the most significant impacts relate to fair value accounting for our fixed index annuity business and are not economic in nature but rather impact the timing of reported results, we believe these non-GAAP financial measures provide useful supplemental information. Book value per common share including and excluding AOCI and book value per common share excluding AOCI and the net impact of fair value accounting for derivatives and embedded derivatives are calculated as total common stockholders’ equity, total common stockholders’ equity excluding AOCI and total common stockholders' equity excluding AOCI and the net impact of fair value accounting for derivatives and embedded derivatives divided by the total number of shares of common stock outstanding.
All statements, trend analysis and other information contained in this report and elsewhere (such as in filings by us with the SEC, press releases, presentations by us or management or oral statements) may contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements may relate to markets for our products, trends in our operations or financial results, strategic alternatives, future operations, strategies, plans, partnerships, investments, share buybacks and other financial developments, and are subject to assumptions, risks and uncertainties. Statements such as “guidance”, “expect”, “anticipate”, “strong”, “believe”, “intend”, “goal”, “objective”, “target”, “position”, “potential”, “will”, “may”, “would”, “should”, “can”, “deliver”, “accelerate”, “enable”, “estimate”, “projects”, “outlook”, “opportunity” or similar words, as well as specific projections of future events or results qualify as forward-looking statements. Forward-looking statements, by their nature, are subject to a variety of inherent risks and uncertainties that could cause actual results to differ materially from the results projected. Many of these risks and uncertainties cannot be controlled by the Company. Factors that may cause our actual decisions or results to differ materially from those contemplated by these forward-looking statements include, among other things:
•general economic conditions and other factors, including prevailing interest rate levels and stock and credit market performance which may affect (among other things) our ability to sell our products, our ability to access capital resources and the costs associated therewith, the fair value of our investments, which could result in credit losses, and certain liabilities, and the lapse rate and profitability of policies;
•the risk factors or uncertainties listed from time to time in our filings with the SEC.
Excellent customer service teamed with our ability to offer innovative insurance products that provide principal protection and lifetime income continued to result in significant sales of our annuity products. In 2020, our sales were $3.7 billion which has resulted in cash and investments in excess of $62 billion at December 31, 2020. Our sales for the last five years have ranged from $3.7 billion to $7.1 billion.
We continue to be in the midst of an unprecedented period of low interest rates and low yields for investments with the credit quality we prefer which presents a strong headwind to achieving our target rate for investment spread. In response, we have been reducing policyholder crediting rates for new annuities and existing annuities. Active management of policyholder crediting rates resulted in a lower aggregate cost of money during 2020. We continue to have flexibility to reduce our crediting rates if necessary and could decrease our cost of money by approximately 62 basis points if we reduce current rates to guaranteed minimums. Investment yields on fixed income securities purchased and commercial mortgage loans funded in 2020 decreased compared to 2019 due to a general decline in interest rates. As previously noted, as part of the Investment Management pillar, we intend to ramp up our allocation to alpha assets by partnering with proven asset managers in our focus expansion sectors of middle market credit, real estate, infrastructure debt and agricultural loans.
On October 18, 2020, the Company's Board of Directors approved a $500 million share repurchase program. The purpose of the share repurchase program is to both offset dilution from the issuance of shares to Brookfield and to institute a regular cash return program for shareholders. We started the buyback program on October 30, 2020 and repurchased 1.9 million shares of our common stock for $50 million in the open market.
On November 30, 2020 we entered into an accelerated share repurchase ("ASR") agreement with Citibank, N.A. to repurchase an aggregate of $115 million of our common stock. Under the ASR agreement, we received an initial share delivery of approximately 3.5 million shares. The final settlement of 0.5 million shares, which was based on the volume-weighted average price of our common stock during the term of the transaction, less a discount and subject to customary adjustments, was delivered on February 25, 2021. The average price paid for shares repurchased under the ASR was $28.45 per common share.
Under U.S. GAAP, premium collections for deferred annuities are reported as deposit liabilities instead of as revenues. Similarly, cash payments to policyholders are reported as decreases in the liabilities for policyholder account balances and not as expenses. Sources of revenues for products accounted for as deposit liabilities are net investment income, surrender charges assessed against policy withdrawals and fees deducted from policyholder account balances for lifetime income benefit riders, net realized gains (losses) on investments and changes in fair value of derivatives. Components of expenses for products accounted for as deposit liabilities are interest sensitive and index product benefits (primarily interest credited to account balances and changes in the liability for lifetime income benefit riders), changes in fair value of embedded derivatives, amortization of deferred sales inducements and deferred policy acquisition costs, other operating costs and expenses and income taxes.
•our ability to appropriately price for lifetime income benefit riders offered on certain of our fixed rate and fixed index annuity policies,
We intend to manage our capitalization in normal economic conditions at a level that is consistent with a 400% RBC ratio; and allow it to drift downwards if necessary to approximately 320% RBC for reasons including, but not limited to, realized credit losses or temporary increases in required risk capital for ratings migrations. This level is intended to reflect a level that is consistent with the rating agencies expectations for capital adequacy ratios at different points in an economic cycle. This implies operating with a peak to trough swing whereby capital is absorbing risk at the low point of the economic cycle. As economic activity recovers, we would expect to grow capital adequacy back to or near the 400% RBC ratio level through a combination of earnings and balance sheet optimization actions while continuing to execute on our core business strategy.
On April 24, 2020, Fitch affirmed its "A-" financial strength rating on American Equity Investment Life Insurance Company and its life insurance subsidiaries, its "BBB" issuer default rating on American Equity Investment Life Holding Company and its "BBB-" senior unsecured debt ratings, but revised its outlook to "negative" from "stable" on its financial strength, issuer default and senior unsecured debt ratings due to disruption to economic activity and the financial markets from the COVID-19 pandemic.
Annuity deposits before coinsurance ceded decreased 26% during 2020 compared to 2019. Annuity deposits after coinsurance ceded decreased 22% during 2020 compared to 2019. The decrease in sales in 2020 compared to 2019 was primarily due to the impact of the COVID-19 pandemic, including limitations on face to face meetings and increased social distancing requirements, as well as competitive pressures within each of our distribution channels. We continue to face a challenging environment for sales of fixed index annuities due to a highly competitive market.
We periodically update the key assumptions used in the calculation of amortization of deferred policy acquisition costs and deferred sales inducements retrospectively through an unlocking process when estimates of current or future gross profits/margins (including the impact of realized investment gains and losses) to be realized from a group of products are revised. In addition, we periodically update the assumptions used in determining the liability for lifetime income benefit riders and the embedded derivative component of our fixed index annuity policy benefit reserves as experience develops that is different from our assumptions.
The most significant assumption updates from the 2020 review were to investment spread assumptions, including the net investment earned rate and crediting rates on policies, as well as updates to lapse rate and partial withdrawal assumptions.
The most significant assumption update to the calculation of the fair value of the embedded derivative component of our fixed index annuity policy benefit reserves during 2020 was a decrease in the crediting rate/option budget to 2.10% from 2.90% as a result of a revised estimate of the cost of options. This assumption change resulted in a decrease in the fair value of the embedded derivative component of our fixed index annuity policy benefit reserves due to a reduction in the projected policy contract values over the expected lives of the contracts. The net impact of the the updates to lapse and partial withdrawal assumptions noted above resulted in an increase in the embedded derivative component of our fixed index annuity policy benefit reserves as more funds ultimately qualify for excess benefits. In addition, during 2020, we refined the derivation of the discount rate used in calculating the fair value of embedded derivatives which increased the discount rate and resulted in a decrease in the change in fair value of embedded derivatives offset by increases in amortization of deferred sales inducements and deferred policy acquisition costs.
The most significant assumption updates from the 2019 review were to lapse and utilization assumptions. We had credible lapse and utilization data based upon a comprehensive experience study spanning over 10 years on our products with lifetime income benefit riders and have experienced lapse rates that are lower than previously estimated.
Lower lapse assumptions resulted in an expectation that more policyholders will turn on their lifetime income benefit than previously anticipated which results in a greater amount of benefit payments in excess of account value and the need for a greater liability for lifetime income benefit riders. The decrease in lapse rate assumptions also resulted in policies being in force for a longer period of time and an increase in expected gross profits as compared to previous estimates. The higher level of expected future gross profits resulted in an increase in the balances of deferred policy acquisition costs and deferred sales inducements.
In addition, we revised our assumptions regarding future crediting/discount rates. We assumed a 3.80% U.S. Treasury rate with a 20 year mean reversion period. Our assumption for aggregate investment spread was 2.60% which translated to an ultimate discount rate of 2.90%. While the aggregate spread of 2.60% did not change from prior estimates, our estimates of the profitability of individual cohorts changed with the use of an aggregate portfolio yield across all cohorts. This assumption revision resulted in a change in the allocation of profitability by cohort, which caused a reduction in the deferred policy acquisition costs and deferred sales inducements assets and partially offset the increase in the deferred policy acquisition costs and deferred sales inducements assets from the change in lapse assumptions.
The most significant updates to the calculation of the fair value of the embedded derivative component of our fixed index annuity policy benefit reserves in 2019 were to decrease lapse rate assumptions as noted above. The impact of the lapse rate assumption changes was partially offset by a decrease in the option budget from 3.10% to 2.90% as a result of a revised estimate of the cost of options over the 20 year mean reversion period.
In addition to net income available to common stockholders, we have consistently utilized non-GAAP operating income available to common stockholders, a non-GAAP financial measure commonly used in the life insurance industry, as an economic measure to evaluate our financial performance. Non-GAAP operating income available to common stockholders equals net income available to common stockholders adjusted to eliminate the impact of items that fluctuate from year to year in a manner unrelated to core operations, and we believe measures excluding their impact are useful in analyzing operating trends. The most significant adjustments to arrive at non-GAAP operating income available to common stockholders eliminate the impact of fair value accounting for our fixed index annuity business and are not economic in nature but rather impact the timing of reported results. We believe the combined presentation and evaluation of non-GAAP operating income available to common stockholders together with net income available to common stockholders provides information that may enhance an investor's understanding of our underlying results and profitability.
Non-GAAP operating income available to common stockholders for 2020, 2019 and 2018 includes effects from updates to assumptions as follows:
The impact to net income available to common stockholders and non-GAAP operating income available to common stockholders from assumption updates varies due to the impact of fair value accounting for our fixed index annuity business as non-GAAP operating income available to common stockholders eliminates the impact of fair value accounting for our fixed index annuity business. While the assumption updates made during 2020, 2019 and 2018 were consistently applied, the impact to net income available to common stockholders and non-GAAP operating income available to common stockholders varies due to different amortization rates being applied to gross profit adjustments included in the valuation.
Annuity product charges (surrender charges assessed against policy withdrawals and fees deducted from policyholder account balances for lifetime income benefit riders) increased 5% to $251.2 million in 2020 and 7% to $240.0 million in 2019 from $224.5 million in 2018. The components of annuity product charges are set forth in the table that follows:
Net investment income decreased 5% to $2.2 billion in 2020 and increased 7% to $2.3 billion in 2019 from $2.1 billion in 2018. The decrease for the 2020 compared to 2019 was attributable to a decrease in the average yield earned on invested assets during 2020 compared to 2019. Average invested assets excluding derivative instruments (on an amortized cost basis) increased 4% to $53.1 billion in 2020 and 6% to $51.1 billion in 2019 compared to $48.1 billion in 2018.
The change in fair value of derivatives is also influenced by the aggregate costs of options purchased. During 2020, the aggregate cost of options were lower than in 2019 as option costs generally decreased during 2019 and 2020. The aggregate cost of options is also influenced by the amount of policyholder funds allocated to the various indices and market volatility which affects option pricing. See Critical Accounting Policies - Policy Liabilities for Fixed Index Annuities.
Amortization of deferred sales inducements before gross profit adjustments increased in 2020 compared to 2019 primarily due to the impact of assumption updates made during 2020 compared to the impact of assumption updates made during 2019. Bonus products represented 75%, 76% and 81% of our net annuity account values at December 31, 2020, 2019 and 2018, respectively. The amount of amortization is affected by amortization associated with fair value accounting for derivatives and embedded derivatives utilized in our fixed index annuity business and amortization associated with net realized gains (losses) on investments. Fair value accounting for derivatives and embedded derivatives utilized in our fixed index annuity business creates differences in the recognition of revenues and expenses from derivative instruments including the embedded derivative liabilities in our fixed index annuity contracts. The change in fair value of the embedded derivatives will not correspond to the change in fair value of the derivatives (purchased call options), because the purchased call options are one-year options while the options valued in the fair value of embedded derivatives cover the expected lives of the contracts which typically exceed ten years. Amortization of deferred sales inducements is summarized as follows:
The change in fair value of the fixed index annuity embedded derivatives resulted from (i) changes in the expected index credits on the next policy anniversary dates, which are related to the change in fair value of the call options acquired to fund those index credits discussed above in Change in fair value of derivatives; (ii) changes in the expected annual cost of options we will purchase in the future to fund index credits beyond the next policy anniversary; (iii) changes in the discount rates used in estimating our embedded derivative liabilities; and (iv) the growth in the host component of the policy liability. The amounts presented as "Other changes in difference between policy benefit reserves computed using derivative accounting vs. long-duration contracts accounting" represents the total change in the difference between policy benefit reserves for fixed index annuities computed under the derivative accounting standard and the long-duration contracts accounting standard at each balance sheet date, less the change in fair value of our fixed index annuities embedded derivative. See Critical Accounting Policies - Policy Liabilities for Fixed Index Annuities.
See Net income available to common stockholders and non-GAAP operating income available to common stockholders, a non-GAAP financial measure, above for discussion of the impact of assumption updates on amortization of deferred policy acquisition costs for the years ended December 31, 2020 and 2019. See Critical Accounting Policies - Deferred Policy Acquisition Costs and Deferred Sales Inducements.
Other operating costs and expenses increased 19% to $183.6 million in 2020 and increased 19% to $154.2 million in 2019 from $129.3 million in 2018 and are summarized as follows:
The increase in risk charges during 2020 compared to 2019 was due to an increase in the amount of excess regulatory reserves ceded to an unaffiliated reinsurer pursuant to a reinsurance agreement primarily as a result of the replacement of the previous agreement with a new agreement effective April 1, 2019. The impact from increasing the amount of excess regulatory reserves ceded was partially offset by a lower risk charge percentage in the new agreement. The regulatory reserves ceded at December 31, 2020 and 2019 were $1,398.9 million and $1,162.0 million, respectively.
The effective income tax rate for 2020 and 2019 were impacted by a discrete tax item related to share-based compensation that reduced income tax expense for 2020 and 2019 by approximately $0.4 million and $1.3 million, respectively. The effective tax rate for 2020 was also impacted by a discrete tax item that provided a tax benefit of $30.0 million related to the provision of the Coronavirus Aid, Relief, and Economic Security Act that allowed net operating losses for 2018 through 2020 to be carried back to previous tax years in which a 35% statutory tax rate was in effect. Income tax expense for the year ended December 31, 2019 reflects an increase in income tax expense of approximately $2.5 million related to the reversal of the impact of capital losses expected to be carried back to periods in which a 35% statutory rate was in effect. The effective income tax rates excluding the impact of the discrete items were 21.42% and 21.64%, respectively, for the years ended December 31, 2020 and 2019.
Insurance statutes regulate the type of investments that our life subsidiaries are permitted to make and limit the amount of funds that may be used for any one type of investment. In light of these statutes and regulations and our business and investment strategy, we generally seek to invest in United States government and government-sponsored agency securities, corporate securities, residential and commercial mortgage backed securities, other asset backed securities and United States municipalities, states and territories securities rated investment grade NRSRO's or in securities of comparable investment quality, if not rated and mortgage loans on real estate.
As previously noted, as part of our AEL 2.0 investment pillar, we intend to ramp up our allocation to alpha assets by partnering with proven asset managers in our focus expansion sectors of middle market credit, real estate, infrastructure debt and agricultural loans.
The amortized cost and fair value of fixed maturity securities at December 31, 2020, by contractual maturity are presented in Note 3 - Investments to our audited consolidated financial statements in this Form 10-K, which is incorporated by reference in this Item 7.
The decrease in unrealized losses from December 31, 2019 to 2020 was primarily related to declines in treasury yields during the twelve months ended December 31, 2020, partially offset by the impact the COVID-19 pandemic had on credit markets during the same period. The 10-year U.S. Treasury yield rates at December 31, 2020 and 2019 were 0.93% and 1.92%, respectively. The 30-year U.S. Treasury yields at December 31, 2020 and 2019 were 1.65% and 2.39%, respectively.
(1) Gross unrealized losses have been adjusted to reflect the allowance for credit loss as of December 31, 2020 of $64.8 million.
Our investments' gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities (consisting of 843 and 1,033 securities, respectively) have been in a continuous unrealized loss position at December 31, 2020 and 2019, along with a description of the factors causing the unrealized losses is presented in Note 3 - Investments to our audited consolidated financial statements in this Form 10-K, which is incorporated by reference in this Item 7.
(1)Greece, Ireland, Italy, Portugal and Spain ("GIIPS"). All of our exposure in GIIPS are corporate securities with issuers domiciled in these countries. None of our foreign government obligations were held in any of these countries.
At each balance sheet date, we identify invested assets which have characteristics (i.e., significant unrealized losses compared to amortized cost and industry trends) creating uncertainty as to our future assessment of credit losses. As part of this assessment, we review not only a change in current price relative to its amortized cost but the issuer's current credit rating and the probability of full recovery of principal based upon the issuer's financial strength. For corporate issues, we evaluate the financial stability and quality of asset coverage for the securities relative to the term to maturity for the issues we own. For asset-backed securities, we evaluate changes in factors such as collateral performance, default rates, loss severities and expected cash flows. At December 31, 2020, the amortized cost and fair value of securities on the watch list (all fixed maturity securities) are as follows:
We expect to recover the unrealized losses, net of allowances, as we did not have the intent to sell and it was not more likely than not that we would be required to sell these securities prior to recovery of the amortized cost basis, net of allowances. Our analysis of these securities and their credit performance at December 31, 2020 is as follows:
Corporate securities - public securities: The public corporate securities included on the watch list are primarily domestic oil drillers or securities with exposure to the travel industry. The decline in value of the securities of domestic oil drillers is due to the continuing low level of oil prices, which has caused credit metrics to continue to be under pressure. The decline in value and the heightened credit risk on the securities with exposure to the travel industry is primarily due to the impact COVID-19 has had on the travel industry As a result of our process for identifying securities that could potentially have credit losses, we recognized credit losses of $48.4 million on these securities during 2020.
Residential mortgage backed securities: The residential mortgage backed securities included on the watch list have generally experienced higher levels of stress due to the impact COVID-19 is having on the economy. While there is a heightened level of credit risk for the residential mortgage backed securities included on the watch list, we expect minimal credit losses on these securities based on our current analyses. Based on these analyses, we recognized credit losses of $1.7 million on these securities during 2020.
Other asset backed securities: The decline in value of these securities, which are primarily related to the auto rental industry, is primarily a result of the impact COVID-19 has had on the travel industry. We did not take any credit losses on these securities during 2020 as we do not expect any credit losses on the securities based on our current analyses. We recognized a credit loss of $0.5 million on an other asset backed security during 2020 due to our intent to sell the security.
United States municipalities, states and territories: The decline in value of these securities, which are related to senior living facilities in the Southeastern region of the United States, is primarily due to the financial strain COVID-19 is having on this industry. As a result of our process for identifying securities that could potentially have credit losses, we recognized credit losses of $2.8 million on these securities during 2020.
Prior to the implementation of authoritative guidance in 2020, we evaluated our investments for other than temporary impairments ("OTTI")
In 2019, we recognized OTTI losses of $17.3 million on corporate securities with exposure to the offshore drilling industry. In addition, during 2019 we recognized additional credit losses on residential mortgage backed securities on which we have previously recognized OTTI, recognized OTTI of $0.5 million related to two commercial mortgage backed securities due to our intent to sell the securities and an OTTI of $0.6 million on an other asset backed security on which we have previously recognized OTTI.
Our financing receivables consist of three mortgage loan portfolio segments: commercial mortgage loans, agricultural mortgage loans and residential mortgage loans. Our commercial mortgage loan portfolio consists of mortgage loans collateralized by the related properties and diversified as to property type, location and loan size. Our mortgage lending policies establish limits on the amount that can be loaned to one borrower and other criteria to attempt to reduce the risk of default. Our agricultural mortgage loan portfolio consists of loans with an outstanding principal balance of $245.8 million. These loans are collateralized by agricultural land and are diversified as to location within the United States. Our residential mortgage loan portfolio consists of loans with an outstanding principal balance of $366.3 million that have been purchased throughout 2020. These loans are collateralized by the related properties and diversified as to location within the United States. Mortgage loans on real estate are generally reported at cost adjusted for amortization of premiums and accrual of discounts, computed using the interest method and net of valuation allowances.
At December 31, 2020 and 2019, the largest principal amount outstanding for any single commercial mortgage loan was $34.7 million and $28.5 million, respectively, and the average loan size was $4.8 million and $4.4 million, respectively. In addition, the average loan to value ratio for commercial mortgage loans was 53.6% and 54.3% at December 31, 2020 and 2019, respectively, based upon the underwriting and appraisal at the time the loan was made. This loan to value is indicative of our conservative underwriting policies and practices for making commercial mortgage loans and may not be indicative of collateral values at the current reporting date. Our current practice is to only obtain market value appraisals of the underlying collateral at the inception of the loan unless we identify indicators of impairment in our ongoing analysis of the portfolio, in which case, we either calculate a value of the collateral using a capitalization method or obtain a third party appraisal of the underlying collateral. The commercial mortgage loan portfolio is summarized by geographic region and property type in Note 4 - Mortgage Loans on Real Estate of our audited consolidated financial statements of this Form 10-K, which is incorporated by reference in this Item 7.
In the normal course of business, we commit to fund commercial mortgage loans up to 90 days in advance. At December 31, 2020, we had commitments to fund commercial mortgage loans totaling $75.3 million, with interest rates ranging from 3.00% to 5.65%. During 2020 and 2019, due to historically low interest rates, the commercial mortgage loan industry has been very competitive. This competition has resulted in a number of borrowers refinancing with other lenders. For the year ended December 31, 2020, we received $199.5 million in cash for loans being paid in full compared to $187.6 million for the year ended December 31, 2019. Some of the loans being paid off have either reached their maturity or are nearing maturity; however, some borrowers are paying the prepayment fee and refinancing at a lower rate.
See Note 4 - Mortgage Loans on Real Estate to our audited consolidated financial statements, incorporated by reference, for a presentation of our valuation allowance, foreclosure activity and troubled debt restructure analysis. We have a process by which we evaluate the credit quality of each of our mortgage loans. This process utilizes each loan's loan-to-value and debt service coverage ratios as primary metrics. See Note 4 - Mortgage Loans on Real Estate to our audited consolidated financial statements, incorporated by reference, for a summary of our portfolio by loan-to-value and debt service coverage ratios.
We closely monitor loan performance for our commercial, agricultural and residential mortgage loan portfolios. Commercial, agricultural and residential loans are considered nonperforming when they are 90 days or more past due. Aging of financing receivables is summarized in the following table:
None of our derivatives qualify for hedge accounting, thus, any change in the fair value of the derivatives is recognized immediately in the consolidated statements of operations. A presentation of our derivative instruments along with a discussion of the business strategy involved with our derivatives is included in Note 5 - Derivative Instruments to our audited consolidated financial statements in this Form 10-K, which is incorporated by reference in this Item 7.
Our liability for policy benefit reserves decreased to $61.8 billion at December 31, 2020 compared to $61.9 billion at December 31, 2019. The increase in policy benefit reserves due to net cash flows from annuity deposits and funds returned to policyholders and interest and index credits credited to policyholders during 2020 was offset by a decrease in the fair value of our fixed index annuity embedded derivatives during 2020. Substantially all of our annuity products have a surrender charge feature designed to reduce the risk of early withdrawal or surrender of the policies and to compensate us for our costs if policies are withdrawn early. Our lifetime income benefit rider also reduces the risk of early withdrawal or surrender of the policies as it provides an additional liquidity option to policyholders as the policyholder can elect to receive guaranteed payments for life from their contract without requiring them to annuitize their contract value and the rider is not transferable to other contracts. Notwithstanding these policy features, the withdrawal rates of policyholder funds may be affected by changes in interest rates and other factors.
Liquidity requirements are met primarily by funds provided from operations. Our life subsidiaries generally receive adequate cash flow from annuity deposits and investment income to meet their obligations. Annuity liabilities are generally long-term in nature. However, a primary liquidity concern is the risk of an extraordinary level of early policyholder withdrawals. We include provisions within our annuity policies, such as surrender charges and bonus vesting, which help limit and discourage early withdrawals. Our lifetime income benefit rider also limits the risk of early withdrawals as it provides an additional liquidity option to policyholders as the policyholder can elect to receive guaranteed payments for life from their contract without requiring them to annuitize their contract value and the rider is not transferable to other contracts. At December 31, 2020, approximately 93% or $50.2 billion of our annuity liabilities were subject to penalty upon surrender, with a weighted average remaining surrender charge period of 6.1 years and a weighted average surrender charge percentage of 9.9%.
We, as the parent company, are a legal entity separate and distinct from our subsidiaries, and have no business operations. We need liquidity primarily to service our debt (senior notes and subordinated debentures issued to a subsidiary trust), pay operating expenses and pay dividends to common and preferred stockholders. Our assets consist primarily of the capital stock and surplus notes of our subsidiaries. Accordingly, our future cash flows depend upon the availability of dividends, surplus note interest payments and other statutorily permissible payments from our subsidiaries, such as payments under our investment advisory agreements and tax allocation agreement with our subsidiaries. These sources provide adequate cash flow for us to meet our current and reasonably foreseeable future obligations and we expect they will be adequate to fund our parent company cash flow requirements in 2021.
Currently, American Equity Life may pay dividends or make other distributions without the prior approval of the Iowa Insurance Commissioner, unless such payments, together with all other such payments within the preceding twelve months, exceed the greater of (1) American Equity Life's net gain from operations for the preceding calendar year, or (2) 10% of American Equity Life's statutory capital and surplus at the preceding December 31. For 2021, up to $372.9 million can be distributed as dividends by American Equity Life without prior approval of the Iowa Insurance Commissioner. In addition, dividends and surplus note payments may be made only out of statutory earned surplus, and all surplus note payments are subject to prior approval by regulatory authorities in the life subsidiary's state of domicile. American Equity Life had $2.1 billion of statutory earned surplus at December 31, 2020.
On June 10, 2020, we issued 12,000 shares of 6.625% fixed-rate reset non-cumulative preferred stock, Series B with a $1.00 par value per share and a liquidation preference of $25,000 per share, for aggregate net proceeds of $290.3 million.
On November 30, 2020 we issued 9,106,042 common shares to Brookfield at a value of $37.00 per share for net proceeds of $333.6 million
(1)Amounts shown in this table are projected payments through the year 2070 which we are contractually obligated to pay to our annuity policyholders. The payments are derived from actuarial models which assume a level interest rate scenario and incorporate assumptions regarding mortality and persistency, when applicable. These assumptions are based on our historical experience.
(2)Period that principal amounts are due is determined by the earliest of the call/put date or the maturity date of each note payable.
Level 2 -Quoted prices in active markets for similar financial instruments, quoted prices for identical or similar financial instruments in markets that are not active; and models and other valuation methodologies using inputs other than quoted prices that are observable.
We validate external valuations at least quarterly through a combination of procedures that include the evaluation of methodologies used by the pricing services, comparison of the prices to a secondary pricing source, analytical reviews and performance analysis of the prices against trends, and maintenance of a securities watch list. Additionally, as needed we utilize discounted cash flow models or perform independent valuations on a case-by-case basis using inputs and assumptions similar to those used by the pricing services. Although we do identify differences from time to time as a result of these validation procedures, we did not make any significant adjustments as of December 31, 2020 and 2019.
Evaluation of Allowance for Credit Losses on Available for Sale Fixed Maturity Securities and Mortgage Loan Portfolios
The process to identify available for sale fixed maturity securities that could potentially require an allowance for credit loss involves significant judgment and estimates by management. We review and analyze all fixed maturity securities on an ongoing basis for changes in market interest rates and credit deterioration. This review process includes analyzing our ability to recover the amortized cost or cost basis of each fixed maturity security that has a fair value that is materially lower than its amortized cost and requires a high degree of management judgment and involves uncertainty. The evaluation of fixed maturity securities for credit loss is a quantitative and qualitative process, which is subject to risks and uncertainties.
We have a policy and process to identify fixed maturity securities that could potentially have a credit loss. This process involves monitoring market events and other items that could impact issuers. The evaluation includes but is not limited to such factors as:
•the extent to which fair value is less than amortized cost or cost;
•changes in estimated cash flows of mortgage and asset backed securities.
If we do not intend to sell and it is not more likely than not we will be required to sell the fixed maturity security but also do not expect to recover the entire amortized cost basis of the security, a credit loss would be recognized in operations in the amount of the expected credit loss. We determine the amount of expected credit loss by calculating the present value of the cash flows expected to be collected discounted at each security's acquisition yield based on our consideration of whether the security was of high credit quality at the time of acquisition. The difference between the present value of expected future cash flows and the amortized cost basis of the security is the amount of credit loss recognized in operations. The recognized credit loss is limited to the unrealized loss on the security.
The determination of the credit loss component of a corporate bond is based on the underlying financial performance of the issuer and their ability to meet their contractual obligations. Considerations in our evaluation include, but are not limited to, credit rating changes, financial statement and ratio analysis, changes in management, significant changes in credit spreads, breaches of financial covenants and a review of the economic outlook for the industry and markets in which they trade. In circumstances where an issuer appears unlikely to meet its future obligation, an estimate of credit loss is determined. Credit loss is calculated using default probabilities as derived from the credit default swaps markets in conjunction with recovery rates derived from independent third party analysis or a best estimate of credit loss. This credit
loss rate is then incorporated into a present value calculation based on an expected principal loss in the future discounted at the yield at the date of purchase and compared to amortized cost to determine the amount of credit loss associated with the security.
The valuation allowance for commercial mortgage loans is calculated by pooling our loans based on risk rating and property collateral type and applying an estimated loss ratio against each risk pool. Risk ratings are based on an analysis of the current state of the borrower's credit quality, which considers factors such as loan-to-value ("LTV") and debt service coverage ("DSC") ratios, loan performance and economic outlook, among others. The loss ratios are generally based upon historical loss experience for each risk pool and are adjusted for current and forecasted economic factors management believes to be relevant and supportable. Economic factors are forecasted for two years with immediate reversion to historical experience.
The liability for lifetime income benefit riders is based on the actual and present value of expected benefit payments to be paid in excess of projected policy values recognizing the excess over the expected lives of the underlying policies based on the actual and present value of expected assessments including investment spreads, product charges and fees. The inputs used in the calculation of the liability for lifetime income benefit riders include actual policy values, actual income account values, actual payout factors, actual roll-up rates and our best estimate assumptions for future policy growth, expected utilization of lifetime income benefit riders, which includes the ages at which policyholders are expected to elect to begin to receive lifetime income benefit payments and the percentage of policyholders who elect to receive lifetime income benefit payments, the type of income benefit payments selected upon election and future assumptions for lapse, partial withdrawal and mortality rates. The assumptions are reviewed quarterly and updates to the assumptions are made based on historical results and our best estimates of future experience. The liability for lifetime income benefit riders is included in policy benefit reserves in the consolidated balance sheets and the change in the liability is included in interest sensitive and index product benefits in the consolidated statements of operations. See Results of Operations for the Three Years Ended December 31, 2020 in this Item 7 for a discussion and presentation of the actual effects of assumption revisions.
Our lapse rate assumptions are based on actual experience and our outlook as to future expectations for lapse rates. If lapse rates were to increase 10%, our liability for lifetime income benefit riders would decrease by $39.9 million. A decrease in lapse rates of 10% would increase our liability for lifetime income benefit riders by $40.1 million.
Costs relating to the successful production of new business are not expensed when incurred but instead are capitalized as deferred policy acquisition costs or deferred sales inducements. Only costs which are expected to be recovered from future policy revenues and gross profits may be deferred.
For annuity products, these costs are being amortized in proportion to actual and expected gross profits. Actual and expected gross profits include the the excess of net investment income earned over the interest credited or the cost of providing index credits to the policyholders, or the "investment spread"; and to a lesser extent, product charges and fees net of expected excess payments for lifetime income benefit riders and certain policy expenses. Actual and expected gross profits for fixed index annuities also include the impact of amounts recorded for the change in fair value of derivatives and the change in fair value of embedded derivatives. Current period amortization is adjusted retrospectively through an unlocking process when estimates of actual and expected gross profits (including the impact of net realized gains (losses) on investments and credit losses recognized in operations) to be realized from a group of products are updated. Our estimates of future gross profits are based on actuarial assumptions related to the underlying policies terms, lives of the policies, yield on investments supporting the liabilities and level of expenses necessary to maintain the polices over their entire lives. Revisions are made based on historical results and our best estimates of future experience. See Results of Operations for the Three Years Ended December 31, 2020 in this Item 7 for a discussion and presentation of the actual effects of unlocking.
The net investment earned rate is a key component in the calculation of estimated gross profits. The net investment earned rate is based on current yields being earned in our invested assets portfolio, future spot rates, the expected mean reversion period and expected spread we will earn above the risk-free rate. If the net investment earned rate were to increase 10 basis points, our combined balance for deferred policy acquisition costs and deferred sales inducements at December 31, 2020 would increase by $94.8 million. A decrease in the net investment earned rate of 10 basis points would decrease our combined balance for deferred policy acquisition costs and deferred sales inducements at December 31, 2020 by $97.5 million.
Our lapse rate assumptions are based on actual experience and our outlook as to future expectations for lapse rates. If lapse rates were to increase 10%, our combined balance of deferred policy acquisition costs and deferred sales inducements would decrease by $79.5 million. A decrease in lapse rates of 10% would increase our combined balance of deferred policy acquisition costs and deferred sales inducements by $84.1 million.
See Note 1 - Significant Accounting Policies to our audited consolidated financial statements in this Form 10-K beginning on page, which is incorporated by reference in this Item 7, for new accounting pronouncement disclosures.