NOTES TO THE FINANCIAL STATEMENTS 142

Note 23. Fiduciary Activities

Fiduciary activities are the collection or receipt, and the management, protection, accounting, investment and 

disposition by the government of cash or other assets in which non-federal individuals or entities have an ownership interest 

that the government must uphold. Fiduciary cash and other assets are not assets of the government and are not recognized on 

the consolidated Balance Sheet. The government’s fiduciary activities include the TSP, which is administered by the FRTIB, 

and the Indian Tribal and individual Indian Trust Funds, which are administered by the DOI. 

Schedule of Fiduciary Net Assets as of September 30, 2023, and 2022

(In billions of dollars) 2023 2022

Thrift Savings Plan 794.7 726.0

Department of the Interior 9.0 8.5

All other 5.6 5.4

Total fiduciary net assets 809.3 739.9

In accordance with the requirements of SFFAS No. 31, Accounting for Fiduciary Activities, fiduciary investments in 

Treasury securities and fund balance with Treasury held by fiduciary funds are to be recognized on the Balance Sheet as 

federal debt and interest payable and a liability for fiduciary fund balance with Treasury, respectively. 

As of September 30, 2023, total fiduciary investments in Treasury securities and in non-Treasury securities are $296.8 billion 

and $496.5 billion, respectively. As of September 30, 2022, total fiduciary investments in Treasury securities and in nonTreasury securities were $318.4 billion and $406.3 billion, respectively. Refer to Note 12—Federal Debt and Interest Payable 

for more information on Treasury securities. 

As of September 30, 2023, and 2022, the total fiduciary fund balance with Treasury is $1.7 billion and $1.7 billion, 

respectively. A liability for this fiduciary fund balance with Treasury is reflected as other miscellaneous liabilities in Note 

18—Other Liabilities.

As of September 30, 2023, and 2022, collectively, the fiduciary investments in Treasury securities and fiduciary fund 

balance with Treasury held by all government entities represent $5.1 billion and $4.8 billion, respectively, of unrestricted 

cash included within cash held by Treasury for government-wide operations shown in Note 2—Cash and Other Monetary 

Assets. 

Thrift Savings Plan

The TSF maintains and holds in trust the assets of the TSP. The TSP is administered by an independent government 

entity, the FRTIB, which is charged with operating the TSP prudently and solely in the interest of the participants and their

beneficiaries. 

The TSP is a retirement savings and investment plan for federal employees and members of the uniformed services. It 

was authorized by the Congress in the Federal Employees’ Retirement System Act of 1986. The plan provides federal 

employees and members of the uniformed services with a savings and tax benefit similar to what many private sector 

employers offer their employees under 401(k) plans. This includes two fixed income funds, three stock funds and ten 

lifecycle funds. Effective June 1, 2022, Accenture Federal Services, as part of its recordkeeping services contract, provides a 

Mutual Fund Window that offers participants who meet certain eligibility criteria access to mutual funds. The plan was 

primarily designed to be a key part of the retirement package (along with a basic annuity benefit and Social Security) for 

employees who are covered by FERS. 

As of September 30, 2023, and 2022, the TSP held $794.7 billion and $726.0 billion, respectively, in net assets, which 

included $293.4 billion and $315.4 billion, respectively, of nonmarketable Treasury securities. The TSF combines the net 

assets of the TSP and the FRTIB in its financial statements. Only the TSP net assets of the TSF financial statements are 

disclosed in this note. The most recent audited financial statements for the TSF are as of December 31, 2022, and 2021. For 

additional information about FRTIB, the TSP and the investment options of the TSP, please refer to the FRTIB website at 

https://www.frtib.gov. 
143 NOTES TO THE FINANCIAL STATEMENTS

Department of Interior–Indian Trust Funds

As stated above, DOI has responsibility for the assets held in trust on behalf of American Indian Tribes and individuals. 

DOI maintains accounts for Tribal and Other Trust Funds (including the Alaska Native Escrow Fund) and IIM Trust Funds in 

accordance with the American Indian Trust Fund Management Reform Act of 1994. The fiduciary balances that have 

accumulated in these funds have resulted from land use agreements, royalties on natural resource depletion, other proceeds 

derived directly from trust resources, judgment awards, settlements of claims, and investment income. DOI maintains 

separate financial statements for these trust funds, which are prepared using a cash or modified cash basis of accounting, a 

comprehensive basis of accounting other than GAAP. The independent auditors’ reports on the Tribal and Other Trust Funds 

were qualified as it was not practical to extend audit procedures sufficiently to satisfy themselves as to the fairness of the 

trust fund balances. The IIM Trust Funds received an unmodified opinion from the auditors. As of September 30, 2023, and 

2022, the DOI held $9.0 billion and $8.5 billion, respectively, in net assets. For additional information related to these assets, 

please refer to the DOI website at https://www.doi.gov.

All Other Entities with Fiduciary Activities

The government is responsible for the management of other fiduciary net assets on behalf of various non-federal 

entities. The entities presented individually in the table on the previous page represent the vast majority of the government’s 

fiduciary net assets. All other component entities with fiduciary net assets are aggregated in accordance with SFFAS No. 31. 

As of September 30, 2023, and 2022, including TSP and DOI, there are a total of 21 federal entities with fiduciary activities

at a grand total of 62 and 68 fiduciary funds, respectively. SBA and DOD are the largest entities relating to the fiduciary 

activities of the remaining entities within the “all other” aggregate balance. As of September 30, 2023, “all other” fiduciary 

net assets were $5.6 billion, compared to $5.4 billion as of September 30, 2022.