After-Tax Real Profitability Calculator
Calculate the nominal and inflation-adjusted real return of your after-tax profit on the capital invested in the business.
Things to keep in mind
- Tax is the rate applied to positive profit; exemptions, losses and minimum tax are ignored. Capital changes and inflation accounting are not considered.
Calculator
Result
Enter the values and press Calculate to see the result here.
About this tool
In high inflation a profitable business may still lose purchasing power. The tool deducts tax from pre-tax profit, relates net profit to capital, shows the amount needed to preserve capital and the inflation-adjusted real return.
How to use
- Enter pre-tax profit (negative for a loss).
- Enter the tax rate on profit.
- Enter opening capital (equity) and inflation for the same period, then press Calculate.
Notes
Real return = (1 + nominal return) / (1 + inflation) − 1. Real profit is in opening-period prices.
Frequently asked questions
If net profit / capital is below inflation, capital loses purchasing power despite a nominal profit.
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Last updated: September 30, 2026