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IRR Investment Return Hurdle Calculator

IRR = rate that makes NPV = 0 — linear interpolation estimate.

Estimates Internal Rate of Return (IRR) using linear interpolation between two trial discount rates that bracket NPV = 0.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

IRR ≈ r_low + NPV_low×(r_high−r_low)/(NPV_low−NPV_high)

In depth

Estimates Internal Rate of Return (IRR) using linear interpolation between two trial discount rates that bracket NPV = 0.