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Annuity Income After Tax Value Estimator

Estimate how much annuity income may remain after applying a taxable-percentage assumption and user-entered federal and state or local marginal tax rates. The tool is intended for planning periodic cash flow when only part of an annuity payment may be taxable or when you want to test several tax-rate scenarios.

Rather than deciding the taxable portion for you, the estimator asks you to supply it. That matters because U.S. tax treatment can differ between qualified and nonqualified annuities and can depend on basis, contract terms, and distribution method. The result shows estimated after-tax payment, annual after-tax income, and cumulative after-tax income over the selected period, making the model useful for retirement-budget comparisons.

Calculator inputs

USD
/yr
%
%
%
years
Result
—
Estimated after-tax payment
Estimated tax per payment—
After-tax annual income—
Cumulative after-tax income—
Assumed combined tax rate—

1. Enter the gross payment
Use the annuity payment amount before withholding or tax.

2. Set the payment frequency
Enter how many payments are received in a typical year.

3. Specify the taxable portion
Enter the percentage of each payment you want treated as taxable for this scenario.

4. Enter tax-rate assumptions
Add federal and state or local marginal rates that you want applied to the taxable portion.

5. Select the projection years
Review the estimated after-tax payment and annual and cumulative after-tax income.

Taxable amount per payment = gross payment × taxable portion Combined assumed tax rate = federal rate + state/local rate Estimated tax per payment = taxable amount × combined assumed tax rate After-tax payment = gross payment − estimated tax After-tax annual income = after-tax payment × payments per year

The model uses the taxable portion and marginal rates you enter. It does not determine an exclusion ratio, withholding amount, or final tax liability.

What the result means

The main result estimates the cash remaining from each modeled annuity payment after the assumed income tax on its taxable portion.

Actual taxable amounts for pension and annuity payments can depend on contributions, basis, plan type, and IRS calculation methods.

Given

  • Gross monthly payment: $2,500
  • 12 payments per year
  • Taxable portion: 80%
  • Federal marginal rate: 22%
  • State/local rate: 4%

Calculation
Taxable amount = $2,500 × 80% = $2,000
Combined assumed tax rate = 22% + 4% = 26%
Estimated tax = $2,000 × 26% = $520
After-tax payment = $2,500 − $520 = $1,980

Result
Estimated after-tax payment is $1,980, or $23,760 per year.

The untaxed 20% portion is preserved in the cash-flow result because the model taxes only the percentage you specify.

Why can only part of an annuity payment be taxable?

Depending on the contract and how it was funded, some payments may include a return of amounts already taxed. U.S. rules for determining the taxable and tax-free parts vary, so the calculator asks you to enter the taxable percentage.

Is the federal rate the same as annuity withholding?

No. Withholding is an amount sent to the tax authority during the year, while the marginal rate is an assumption about tax on additional taxable income. The two can differ.

Can I model a fully taxable qualified annuity?

Yes. Set the taxable portion to 100%, then enter the federal and state or local rates you want to test.

Does the estimator include investment growth inside the annuity?

No. It starts from a stated payment amount and estimates the tax effect on that payment stream. It does not value the underlying contract or guarantees.

How should I use the cumulative after-tax income figure?

Use it as a budget-planning total for the selected number of years under constant payments and tax assumptions. It is not a present-value calculation.