# IRR Calculator

> Calculate the Internal Rate of Return (IRR) for a series of annual cash flows.

Page: https://askcalculators.com/calculator/irr-calculator/
Definition: https://askcalculators.com/calculator/irr-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/irr-calculator/schema.json
Version: 7.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/irr-calculator/?initialInvestment=10000&cashFlows=2000%2C+3000%2C+4000%2C+5000

## Inputs
- initialInvestment: Initial Investment; type=number; optional; default=10000
- cashFlows: Cash Flows; type=text; optional; default=2000, 3000, 4000, 5000

## Outputs
- result: Result; format=text; primary

## Formula
IRR is the periodic rate r that solves 0 = Σ cash flow_t ÷ (1+r)^t, found by bounded numerical search.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.