What the After-Tax Investment Return Calculator is for
Estimate return after entered taxes and fees.
It makes the prices, cash flows, rates, time periods, weights, and model conventions explicit so you can inspect an entered scenario without hidden live-market assumptions.
Calculation structure
Follow the stated model and units
Net gain = capital gain + income − entered gains tax − entered income tax − fees. Return = net gain ÷ amount invested.
Visual explanation
See how the inputs become the result
Capital and cash flowstime and rate→entered modelScenario resultChanging one assumption changes the model—not the marketNet gain = capital gain + income − entered gains tax − entered income tax − fees. Return = net gain ÷ amount invested.
Read the estimate correctly
Use the result within its boundaries
On 10,000 invested, a 1,000 gain, 200 income, 20% tax rates, and 40 fees give 920 net gain and 9.2% return.
No jurisdiction, allowance, holding period, loss offset, tax basis, or legal tax treatment is inferred.
Quick guide
How to use this calculator
Enter the exposure, market, accounting, probability, rate, or risk assumptions named by the fields.
Use consistent currencies, periods, share units, and percentage conventions.
Interpret the output only within the displayed model and limitations.
Calculation method
Calculation method
Net gain = capital gain + income − entered gains tax − entered income tax − fees. Return = net gain ÷ amount invested.
Fixed decimal scalar arithmetic remains exact until display. Square-root and compound projections are explicitly approximate and reject non-finite results.
Worked example
Worked example
On 10,000 invested, a 1,000 gain, 200 income, 20% tax rates, and 40 fees give 920 net gain and 9.2% return.
Net gain = capital gain + income − entered gains tax − entered income tax − fees. Return = net gain ÷ amount invested.
Supported inputs
Precision and limits
Visible input limits
Fixed decimals accept 30 digits and 12 decimal places, with absolute values capped at 1e12 per input and general rates capped at 1000%. Formula-specific shares and probability limits are validated separately.
International scope
No currency, exchange, broker, live security data, accounting standard, tax jurisdiction, contract specification, or regulatory disclosure is selected automatically.
Decision boundary
Outputs are arithmetic scenarios, not forecasts, advice, suitability assessments, trading signals, fair-value opinions, risk guarantees, or recommendations.
Calculator-specific assumptions
No jurisdiction, allowance, holding period, loss offset, tax basis, or legal tax treatment is inferred.
