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IRR Calculator

Calculate Internal Rate of Return, NPV, payback period, and profitability index for any cash flow series โ€” with a full step-by-step breakdown, DCF table, and NPV sensitivity curve.

Cash Flow Inputs

Enter your investment and expected cash flows per period

Presets:
Negative = outflow  ยท  Positive = inflow

Cash Flow Waterfall

Enter values to see chart
Inflow Outflow
IRR
โ€”
internal rate of return
Net Present Value
โ€”
at discount rate
Payback Period
โ€”
periods to recover investment
Profitability Index
โ€”
PV inflows / |CFโ‚€|

IRR & NPV Key Formulas

NPV Formula

NPV = ฮฃ CFโ‚œ / (1+r)แต—

IRR Condition

NPV(IRR) = 0

Discount Factor

DF = 1 / (1 + r)แต—

Profitability Index

PI = PV inflows / |CFโ‚€|