Estate Tax Estimator

Introduction

Estate tax is a tax imposed on the transfer of a deceased person's estate to their heirs and beneficiaries. Unlike inheritance tax, which is paid by the person receiving the assets, estate tax is levied on the total value of the estate itself before distribution. The federal estate tax in the United States applies only to estates exceeding a certain threshold known as the applicable exclusion amount, which changes periodically due to tax legislation.

Understanding estate tax is critical for anyone engaged in estate planning, particularly those with significant assets. An estate tax estimator helps you determine whether your estate might be subject to taxation and estimate the potential tax burden. This allows you to structure your estate in ways that minimize or eliminate the tax liability through various strategies such as trusts, charitable donations, and lifetime gifting.

The federal estate tax rate is effectively a flat 40% on the amount exceeding the exclusion threshold, though some states impose their own estate or inheritance taxes with different rates and exemption levels. The Tax Cuts and Jobs Act of 2017 significantly increased the federal exemption amount, making estate tax irrelevant for most Americans. However, these provisions are scheduled to sunset, which would reduce the exemption substantially.

Estate tax is distinct from inheritance tax, which some states impose directly on the beneficiaries based on their relationship to the deceased. In inheritance tax systems, spouses and children typically receive more favorable treatment, while distant relatives and unrelated beneficiaries face higher rates. Understanding the difference between these tax types is essential for accurate planning.

How to Use

Enter the estimated gross value of your estate, which includes all assets such as real estate, investments, bank accounts, retirement accounts, business interests, and personal property. The gross estate is the total fair market value of everything you own at the time of death.

Enter any applicable deductions, which may include mortgages and other debts, funeral expenses, estate administration costs, charitable bequests, and the marital deduction for assets passing to a surviving spouse. Enter the applicable exclusion amount for the relevant year. For 2025, the federal exclusion is approximately $13.99 million per individual. Enter the tax rate applicable in your jurisdiction. The federal rate is 40% on amounts exceeding the exclusion.

Press Calculate to see the taxable estate and estimated tax due. For example, an estate valued at $15 million with $500,000 in deductions and a $13.99 million exclusion would have a taxable estate of $510,000, resulting in approximately $204,000 in federal estate tax.

Formulas and Calculations

The taxable estate is the gross estate reduced by allowable deductions and the applicable exclusion:

For example, with a gross estate of $20 million, exemption of $13.99 million, and deductions of $1 million, the taxable estate is $5,010,000.

The estate tax is then calculated by applying the tax rate to the taxable estate:

For the example above: $5,010,000 x 0.40 = $2,004,000 in federal estate tax. Some states impose progressive bracketed estate taxes with multiple brackets.

Reference Table

The table below shows federal estate tax estimates for 2025 exemption levels ($13.99 million) at 40% rate with $500,000 in deductions.

Practical Tips

Consider lifetime gifting to reduce your estate. You can give up to $18,000 per recipient per year without using any of your lifetime exemption. Married couples can double this amount through gift splitting. This allows you to transfer substantial wealth over time without triggering gift taxes.

Establish credit shelter trusts to maximize the use of both spouses' exemptions. A properly structured trust can save hundreds of thousands in estate taxes for married couples by ensuring that neither spouse's exemption is wasted. Make charitable bequests to reduce the taxable estate, as charitable donations are fully deductible for estate tax purposes.

Review your estate plan regularly, especially when tax laws change. The current high exemption levels are scheduled to sunset after 2025, which would reduce the exemption by approximately half. Consider life insurance held in an irrevocable life insurance trust to provide liquidity for estate taxes without increasing your taxable estate.

Limitations

This calculator provides estimates based on simplified assumptions about exemption amounts and tax rates. Estate tax law is complex and subject to change. The applicable exclusion amount can vary significantly by year and jurisdiction. State estate tax rules differ widely and may have their own exemption amounts, rate structures, and filing requirements.

The calculator does not account for the marital deduction, portability election, or Generation-Skipping Transfer Tax. Complex valuation issues such as discounts for lack of marketability or minority ownership interests are not modeled. This tool is a rough estimator and not tax advice.

Estate taxes are imposed on the transfer of a deceased person's assets to their heirs. Understanding how estate taxes work is essential for effective estate planning, especially for individuals with significant assets. This calculator helps you estimate potential federal estate tax liability based on current exemption levels and tax rates. Proper estate planning can significantly reduce or eliminate estate tax exposure through strategies such as trusts, gifting, and charitable donations.

Frequently Asked Questions

What is the federal estate tax exemption for 2026?

For 2026, the federal basic exclusion amount is approximately $13.99 million per individual ($27.98 million for married couples with portability). Estates below this owe no federal estate tax.

What is the top federal estate tax rate?

The federal estate tax uses a progressive marginal rate system from 18% to 40%. The 40% top rate applies to the portion exceeding the exemption.

Does the estate tax apply to all assets I own?

The gross estate includes virtually everything: real estate, bank accounts, investments, retirement accounts, business interests, and life insurance proceeds if you owned the policy.

What deductions can reduce my estate tax liability?

Common deductions include the marital deduction (unlimited transfers to surviving spouse), charitable bequests, mortgages, funeral expenses, and state estate taxes paid.

What is portability and how does it help married couples?

Portability allows a surviving spouse to use any unused portion of the deceased spouse exemption, potentially sheltering up to ~$28 million from estate tax.

References

• Internal Revenue Service. "Estate Tax." IRS.gov, Publication 559.
• Tax Policy Center. "Briefing Book: The Estate Tax." taxpolicycenter.org.
• American Bar Association. "Introduction to Estate Planning." americanbar.org.
• Nolo. "Estate Tax: Everything You Need to Know." nolo.com.
• Investopedia. "Estate Tax: What It Is, How It Works, and Who Pays." investopedia.com.
• Kiplinger. "State Estate Tax and Inheritance Tax Changes." kiplinger.com.