Quick start
- Open the Estate Tax Calculator.
- Enter the gross estate as the rough total value before this page subtracts anything.
- Add debts and expenses, charitable bequests, spouse transfers, and prior taxable gifts only when they belong in the scenario.
- Calculate, then check estate before exclusion, remaining basic exclusion, amount above exclusion, and the simplified federal estimate.
- Use the answer as a rough 2026 federal screen before professional estate and tax advice, not as Form 706.
Best uses
Start here if one of these sounds like your job. The examples below show which inputs matter most.
- Screen whether a large estate might exceed the 2026 federal exclusion.
- See how debts, charitable bequests, or spouse transfers change the rough taxable amount.
- Account for prior taxable gifts at a high level.
- Prepare better questions for an estate attorney or tax professional.
What this calculator is for
The Estate Tax Calculator is a high-level screen for very large estates. It checks whether the numbers you enter sit above the 2026 federal basic exclusion, but it is not a Form 706 filing tool or legal advice.
Use it when the estate may be large enough to deserve a first-pass federal check before you ask sharper questions about Form 706, portability, state estate tax, trusts, or professional planning.
What to enter
Estate-tax screens need the gross estate, debts and expenses, charitable bequests, spouse transfers, and prior taxable gifts to stay separate. Do not hide one number inside another unless you mean to.
- Enter gross estate as the rough total estate value before the deductions on this page.
- Enter debts and expenses, charitable bequests, and spouse transfers only when they belong in the rough scenario you are testing.
- Enter prior lifetime taxable gifts because this simplified model treats them as using part of the 2026 basic exclusion.
Example walkthrough
Try the starter example: an $18,000,000 estate with $500,000 in debts and expenses. The estate before exclusion is $17,500,000, the amount above the 2026 federal exclusion is $2,500,000, and the simplified estimate is $1,000,000.
- An $18,000,000 estate with $500,000 of deductions starts with $17,500,000 before exclusion.
- The calculator subtracts the $15,000,000 2026 federal exclusion and applies a simplified 40% estimate only to the $2,500,000 above that exclusion, giving a rough $1,000,000 federal estimate.
Formula and steps
In plain language: The calculator subtracts entered debts, charitable bequests, and spouse transfers, reduces the 2026 basic exclusion by prior taxable gifts, then applies a simplified 40% top-rate estimate above the remaining exclusion. If the answer looks wrong, check the gross estate first, then the deduction fields, then prior taxable gifts. This is not the full Form 706 tax computation.
This is a screen, not a tax return. IRS Form 706 can involve detailed valuations, adjusted taxable gifts, credits, deductions, elections, portability, and supporting records that this page does not model.
How to read the answer
Start with the simplified federal estate tax estimate. Then check estate before exclusion, remaining basic exclusion, and amount above exclusion so you can see exactly where the number came from.
- Taxable estate before exclusion is the estate after the deductions you entered.
- Remaining exclusion shows how much of the 2026 basic exclusion is still available after prior taxable gifts.
- Estimated federal estate tax is simplified. Real federal estate tax work is much more detailed.
Common mistakes to avoid
Most bad estate-tax estimates come from using a rough asset value, forgetting prior taxable gifts, treating spouse or charity transfers too casually, or acting like the calculator replaced Form 706.
- Do not use this for trusts, portability, generation-skipping tax, state estate tax, inheritance tax, valuation discounts, or Form 706 decisions.
- Do not forget that asset values, debts, deductions, adjusted taxable gifts, and elections can change the real return.
- Do not treat the simplified 40% estimate as the full IRS computation for every estate.
What to try next
A related tool can help when the estate-tax screen is only one part of the planning question, such as growth over time, income tax, or a wider finance scenario.
- Use Future Value Calculator to test how estate value might grow.
- Talk to an estate attorney or tax professional when the estate may be near the filing threshold, when portability matters, or when Form 706 could be required.
Sources and estimate notes
IRS estate-tax sources explain the 2026 federal exclusion, gross estate idea, deductions, adjusted taxable gifts, Form 706 timing, and portability context. Those sources are why this guide stays honest about what the calculator can and cannot do.
The calculator still stays simple. It does not file Form 706, calculate state estate tax, model DSUE, value trusts or businesses, check GST tax, or replace an estate attorney or tax professional.
Worked examples for Estate Tax Calculator
$1,000,000 simplified federal estimate above the 2026 exclusion
$1,760,000 simplified estimate after deductions
$680,000 simplified estimate after reduced exclusion
FAQ in plain language
When should I use the Estate Tax Calculator?
Use it when you want to test the exact inputs on this page: Screen whether a large estate might exceed the 2026 federal exclusion. See how debts, charitable bequests, or spouse transfers change the rough taxable amount. The result is a check against your assumptions, not proof that a lender, tax app, broker, platform, or provider will use the same number.
What do the main Estate Tax Calculator inputs mean?
Gross estate means the rough total value of the estate before the deductions you enter on this page. Debts and expenses means mortgages, debts, and estate costs you want to subtract in this rough screen. Charitable bequests means amounts going to qualified charities that you want treated as deductions in the estimate. Spouse transfers means amounts passing to a surviving spouse that you want removed from the rough taxable estate. Prior taxable gifts means lifetime taxable gifts that may have already used part of the lifetime exclusion.
What 2026 estate tax exclusion does this use?
It uses the IRS-published 2026 federal basic exclusion amount of $15,000,000 for estates of decedents who die during 2026. If the year of death is different, use the IRS threshold for that year instead.
Is this the same as filing Form 706?
No. This is a rough exclusion screen. Form 706 uses detailed asset values, deductions, adjusted taxable gifts, credits, elections, schedules, and supporting records. Use this page to spot whether the numbers deserve a professional review, not to file.
Why do prior taxable gifts matter?
Prior taxable gifts can use part of the lifetime exclusion before death. This simplified model subtracts the prior taxable gifts you enter from the 2026 basic exclusion before estimating the amount above the exclusion.
Does this include portability or DSUE?
No. Portability and the deceased spousal unused exclusion are handled through Form 706 rules and deadlines. The IRS says a timely, complete Form 706 is generally needed to elect portability, so this page does not try to model it.
What is the Estate Tax Calculator doing with my numbers?
In plain language: The calculator subtracts entered debts, charitable bequests, and spouse transfers, reduces the 2026 basic exclusion by prior taxable gifts, then applies a simplified 40% top-rate estimate above the remaining exclusion. If the answer looks wrong, check the gross estate first, then the deduction fields, then prior taxable gifts. This is not the full Form 706 tax computation.
Related tools
- Income Tax Calculator Estimate 2026 U.S. federal income tax from income, filing status, deduction, credits, and brackets.
- Finance Calculator Project a future balance from starting money, monthly deposits, rate, and time.
- Future Value Calculator Estimate future value of a starting amount and regular payments.
Keep exploring
If this guide is close but not exact, these links keep you near the same kind of problem.
- Finance Browse the full category for related tools that help with the same job.
- All free tools Search the complete Access Free Tools library by task, category, or tool name.
- All calculator and utility guides Find more plain-language examples, formulas, mistakes, and result explanations.
- Free calculator resources Start here when you are not sure which calculator page fits.
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