Advanced Excel Financial - XIRR Function

The XIRR function returns the internal rate of return for a schedule of cash flows that is not necessarily periodic. To calculate the internal rate of return for a series of periodic cash flows, use the IRR function.
XIRR (values, dates, [guess])

A series of cash flows that corresponds to a schedule of payments in dates.
See Notes below.
A schedule of payment dates that corresponds to the cash flow payments.
Dates may occur in any order.
See Notes below.
The first payment is optional and corresponds to a cost or payment that occurs at the beginning of the investment

If the first value is a cost or payment, it must be a negative value
All succeeding payments are discounted based on a 365-day year


The first payment is optional and corresponds to a cost or payment that occurs at the beginning of the investment
If the first value is a cost or payment, it must be a negative value
If the first value is a cost or payment, it must be a negative value
All succeeding payments are discounted based on a 365-day year
All succeeding payments are discounted based on a 365-day year
The series of values must contain at least one positive and one negative value. Dates should be entered by using the DATE Function, or as results of other formulas or functions. Problems can occur if dates are entered as text.
The series of values must contain at least one positive and one negative value. Dates should be entered by using the DATE Function, or as results of other formulas or functions. Problems can occur if dates are entered as text.
Microsoft Excel stores dates as sequential serial numbers so they can be used in calculations. By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,448 days after January 1, 1900.
Microsoft Excel stores dates as sequential serial numbers so they can be used in calculations. By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,448 days after January 1, 1900.
Numbers in dates are truncated to integers.
Numbers in dates are truncated to integers.
XIRR expects at least one positive cash flow and one negative cash flow. Otherwise, XIRR returns the #NUM! error value.
XIRR expects at least one positive cash flow and one negative cash flow. Otherwise, XIRR returns the #NUM! error value.
If any number in dates is not a valid Excel date, XIRR returns the #VALUE! error value.
If any number in dates is not a valid Excel date, XIRR returns the #VALUE! error value.
If any number in dates precedes the starting date, XIRR returns the #NUM! error value.
If any number in dates precedes the starting date, XIRR returns the #NUM! error value.
If values and dates contain a different number of values, XIRR returns the #NUM! error value.
If values and dates contain a different number of values, XIRR returns the #NUM! error value.
In most cases you do not need to provide guess for the XIRR calculation. If omitted, guess is assumed to be 0.1 (10 percent)
In most cases you do not need to provide guess for the XIRR calculation. If omitted, guess is assumed to be 0.1 (10 percent)
XIRR is closely related to XNPV, the net present value function. The rate of return calculated by XIRR is the interest rate corresponding to XNPV = 0.
XIRR is closely related to XNPV, the net present value function. The rate of return calculated by XIRR is the interest rate corresponding to XNPV = 0.
Excel uses an iterative technique for calculating XIRR. Using a changing rate (starting with guess), XIRR cycles through the calculation until the result is accurate within 0.000001 percent. If XIRR can't find a result that works after 100 tries, the #NUM! error value is returned. The rate is changed until −
$$0 = \sum_{i=1}^{N} \frac{P_i}{\left ( 1
+ rate \right )^{\frac{\left ( d_i - d_1 \right )}{365}}}$$
Where,
di = the ith, or last, payment date.
d1 = the 0th payment date.
Pi = the ith, or last, payment.

Excel uses an iterative technique for calculating XIRR. Using a changing rate (starting with guess), XIRR cycles through the calculation until the result is accurate within 0.000001 percent. If XIRR can't find a result that works after 100 tries, the #NUM! error value is returned. The rate is changed until −
$$0 = \sum_{i=1}^{N} \frac{P_i}{\left ( 1
+ rate \right )^{\frac{\left ( d_i - d_1 \right )}{365}}}$$
Where,
di = the ith, or last, payment date.
d1 = the 0th payment date.
Pi = the ith, or last, payment.
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