IRR Calculator
This calculator can calculate the Internal Rate of Return (IRR) for scenarios involving a fixed recurring cash flow, no cash flow, or irregular annual cash flows.
How to Use the IRR Calculator
Enter initial investment and periodic cash flows to estimate IRR, the discount rate that sets project NPV to zero.
Discount-Rate Interpretation
IRR summarizes project return intensity in a single rate.
Cash-Flow Pattern Risk
Nonstandard cash-flow signs can produce ambiguous IRR outputs.
NPV Pairing
IRR should be interpreted with NPV for value magnitude context.
Hurdle-Rate Screening
IRR is useful for quick acceptance/rejection checks.
Advanced Variants
MIRR/XIRR approaches improve realism in certain cases.
Frequently Asked Questions
What is IRR?+
IRR is implied return rate that zeroes net present value.
Why can IRR be misleading?+
Multiple sign changes in cash flows can create multiple IRRs.
How does IRR compare to hurdle rate?+
Projects with IRR above hurdle may be acceptable, all else equal.
Can IRR compare project sizes?+
Not reliably alone; NPV captures absolute value creation.
Does timing of cash flows matter?+
Yes, earlier inflows typically increase IRR.
Can IRR be negative?+
Yes, when project fails to recover cost in discounted terms.
Should reinvestment assumption be considered?+
Yes, IRR has reinvestment interpretation limitations.
When is MIRR preferable?+
MIRR can address some IRR reinvestment issues.
Is IRR enough for approval?+
No, combine with NPV, payback, and risk analysis.
Can non-periodic cash flows be used?+
Use XIRR-style methods for irregular timing.
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