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Estate Tax After Tax Value Estimator

This estimator converts a gross estate value into a simplified after-tax amount by subtracting entered deductions and estimating federal estate tax on value above the chosen exclusion.

It is intended for high-level scenario testing, such as comparing different estate sizes, deduction assumptions, or future exemption levels. The default basic exclusion is $15 million for 2026, but the field is editable because the applicable amount depends on the year and individual circumstances. Federal estate tax is more complex than a single-rate formula, so this page should be treated as a planning estimate rather than a Form 706 calculation.

Estate value assumptions

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Result
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Estimated after-tax estate value
Net estate before tax—
Amount above exclusion—
Estimated estate tax—
Tax as % of net estate—

1. Enter gross estate value
Use the total value you want included before modeled deductions.

2. Enter deductions and debts
Add the amount you want subtracted before comparing the estate with the exclusion.

3. Set the exclusion
Keep the 2026 default or replace it with the basic exclusion assumption for your scenario.

4. Choose a tax-rate assumption
Use a marginal estate-tax rate for the simplified amount-above-exclusion calculation.

5. Review the net value
Compare pre-tax net estate, taxable excess, estimated tax, and after-tax estate value.

Net estate = Gross estate − Deductions and debts
Taxable excess = max(0, Net estate − Exclusion)
Estimated estate tax = Taxable excess × Tax rate
After-tax estate = Net estate − Estimated estate tax

This simplified model applies a single rate to the amount above the entered exclusion. It does not recreate the unified credit, prior taxable gift computation, or every deduction and election available on Form 706.

What the result means

The result is the modeled estate value remaining after entered deductions and the simplified estate-tax estimate.

The default $15,000,000 exclusion is a 2026 federal reference point; state taxes and individual estate-tax mechanics are not included.

Given: $18,000,000 gross estate, $1,000,000 deductions, $15,000,000 exclusion, 40% tax rate.

Calculation: Net estate = $17,000,000. Taxable excess = $17,000,000 − $15,000,000 = $2,000,000. Estimated tax = $2,000,000 × 40% = $800,000.

Result: Estimated after-tax estate = $16,200,000.

Interpretation: Under these simplified assumptions, the modeled federal tax reduces the net estate by $800,000.

Is the $15 million exclusion fixed for every year?

No. The calculator starts with a 2026 federal basic exclusion assumption of $15,000,000, but tax law and inflation adjustments can change future amounts. The field is editable so you can model another year or scenario.

Does the estate tax rate apply to the entire estate?

Not in this simplified model. The rate is applied only to the amount above the entered exclusion after the deductions entered on the page. Actual Form 706 calculations are more detailed.

What belongs in deductions and debts?

Use amounts you want removed from the gross estate before this simplified tax estimate, such as qualifying deductions or liabilities. Eligibility and valuation rules are not determined by the calculator.

Does the result include state estate or inheritance tax?

No. State estate and inheritance taxes vary significantly and are not automatically included. You can use the federal estimate as one component of a broader plan.

Can portability or prior taxable gifts change the result?

Yes. Portability, adjusted taxable gifts, marital and charitable deductions, and credits can materially affect federal estate tax. This streamlined page does not reproduce the full Form 706 computation.