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Annuity Income Tax Impact Estimator

Estimate the tax impact of annuity income by applying user-entered tax rates only to the portion of the payment stream you identify as taxable. The calculator is designed for scenario analysis when you already have a reasonable taxable-percentage assumption and want to see how that assumption changes estimated tax and spendable income.

U.S. annuity taxation can depend on whether a contract is qualified or nonqualified, how it was funded, and the method used to determine the tax-free portion. Because those facts cannot be inferred from a payment amount alone, the tool does not calculate an exclusion ratio. Instead, it reports taxable annuity income, estimated annual and multi-year tax, and after-tax annual income based on your own inputs.

Calculator inputs

USD/yr
%
%
%
years
Result
—
Estimated annual tax on annuity income
Taxable annual annuity income—
After-tax annual annuity income—
Estimated tax over projection—
Combined assumed tax rate—

1. Enter gross annual income
Use the annuity income expected before tax withholding or estimated tax payments.

2. Enter the taxable percentage
Use the share of the annual payment you want treated as taxable under your scenario.

3. Enter a federal rate
Use the marginal federal rate you want applied to the modeled taxable annuity income.

4. Add a state or local rate
Enter any additional marginal income-tax rate you want included, or 0% if none applies.

5. Choose a projection period
Review the annual tax estimate, after-tax annual income, and cumulative modeled tax over the selected years.

Taxable annuity income = gross annual income × taxable portion Combined assumed tax rate = federal rate + state/local rate Estimated annual tax = taxable annuity income × combined assumed tax rate After-tax annual income = gross annual income − estimated annual tax Projected tax = estimated annual tax × years

The calculation assumes the payment amount, taxable percentage, and tax rates remain constant throughout the selected period. It is not a tax-return or withholding calculator.

What the result means

The main result is the estimated annual income tax attributable to the modeled taxable portion of annuity payments.

IRS guidance distinguishes taxable and tax-free portions for some pension and annuity payments, and the method can depend on contract and plan details.

Given

  • Gross annual annuity income: $30,000
  • Taxable portion: 80%
  • Federal marginal rate: 22%
  • State/local rate: 4%
  • Projection: 5 years

Calculation
Taxable annual income = $30,000 × 80% = $24,000
Combined assumed tax rate = 22% + 4% = 26%
Estimated annual tax = $24,000 × 26% = $6,240
After-tax annual income = $30,000 − $6,240 = $23,760
Five-year modeled tax = $6,240 × 5 = $31,200

Result
Estimated annual tax is $6,240 and estimated after-tax annual annuity income is $23,760.

The calculation taxes only the 80% portion specified in the scenario.

How do I know what percentage of my annuity is taxable?

That depends on the type of annuity, your investment in the contract or basis, and the applicable tax method. Use a percentage supported by your contract records or tax guidance rather than guessing.

Does this include federal withholding rules?

No. The tool estimates tax using marginal-rate assumptions; it does not determine the amount a payer must withhold from periodic or nonperiodic distributions.

Can I enter 100% taxable?

Yes. That models a situation in which the entire payment is treated as taxable under the rates you enter.

Does the projection account for changing tax brackets?

No. The same rates are applied for every modeled year. If you expect your tax situation to change, run separate scenarios with different inputs.

How is this different from the After Tax Value Estimator?

This calculator emphasizes the tax amount and taxable-income base. The after-tax value tool emphasizes the net payment and cumulative spendable cash flow.