How to use the xirr calculator
Prepare the values for this calculation
Solve an annualized internal rate of return for dated cash flows using actual day spacing. Use the formula below to check that it answers your question. Read the input units before transferring figures from a statement, measurement or dataset.
Enter and check each input
- Dated cash flows — YYYY-MM-DD,amount: keep one record per line and preserve the column order shown in the example. Replace the example data with your own complete dataset.
The input table gives a complete example. Keep units and time periods consistent across related fields.
Calculate and resolve any input error
Choose Calculate after entering the values. Changes also update the answer after a short pause. If an error appears, follow its message, correct the field and calculate again. Reset restores the example values.
Interpret the answer
Check XIRR first. With the unchanged example inputs, it is 9.9713585934%. Interpret it using the formula and assumptions on this page.
Compare and keep a useful result
The result diagram shows the inputs, method and output. A numeric chart is shown only when the calculation supports a meaningful numeric relationship.
Use Copy result or Download CSV to keep the answer. Share tool shares the page address without placing your input values in the URL. Recheck inputs and assumptions before using the result for a decision.
XIRR Calculator formula
XIRR solves Σ CFᵢ/(1+r)^((dateᵢ−date₀)/365)=0.
Inputs and units
| Input | Format / range | Example |
|---|---|---|
| Dated cash flows — YYYY-MM-DD,amount | One row per line | 2024-01-01,-10000
2025-01-01,11000 |
Worked example
Using the example inputs above, the xirr is 9.9713585934%.
- XIRR
- 9.9713585934%
Results and assumptions
The output uses the xirr convention and formula shown above. Match the entered units and source assumptions when comparing results.
Rates, fees and tax assumptions are entered values. This calculation does not quote a lender, determine a tax liability or guarantee an investment return.
Fix an input or unexpected result
If your answer differs from the example, choose Reset and compare every field, including selected units and options. Check percentage versus decimal entry and whether values describe the same period. Round only the final displayed answer when reproducing the formula.
If a discrepancy remains, report the calculator issue with the page address, non-sensitive example inputs, actual result, expected result and a reference for your calculation.