Estate Tax Calculator: Everything You Need to Know About Federal and State Estate Taxes
An estate tax calculator is one of the most critical financial planning tools available for individuals with significant assets. Whether you are estimating the tax burden on a loved one's estate or planning your own wealth transfer strategy, understanding how the federal estate tax works — and which states impose their own levies — can save your family hundreds of thousands, or even millions, of dollars. This free estate tax calculator provides instant estimates of both federal and state-level estate taxes, taking into account current exemptions, graduated tax brackets, deductions, portability elections, and lifetime gift adjustments for tax years 2024 through 2028.
The United States federal estate tax applies to the transfer of property at death. It is sometimes called the "death tax" in public discourse, though technically it is levied on the estate itself rather than on the heirs who receive the inheritance. The federal estate tax calculator portion of our tool uses the graduated rate schedule established by the Internal Revenue Code, starting at 18% on the first $10,000 above the exemption and rising to a top marginal rate of 40% on amounts exceeding $1 million above the exemption threshold. For 2025, the federal estate tax exemption stands at $13.99 million per individual, meaning that estates valued below this amount owe zero federal estate tax. However, this historically high exemption is set to undergo a major change — the Tax Cuts and Jobs Act (TCJA) provisions are scheduled to sunset after 2025, potentially cutting the exemption roughly in half starting in 2026.
How Does the Federal Estate Tax Work in Practice?
The estate planning calculator starts by determining your gross estate — the total fair market value of everything you own at death. This includes real estate, bank accounts, investment portfolios, retirement accounts, life insurance proceeds (if you own the policy), business interests, vehicles, jewelry, collectibles, and any other assets of value. The Internal Revenue Service requires that all assets be valued at their fair market value as of the date of death, though an executor may elect to use an alternate valuation date six months later if it reduces the estate's value.
From the gross estate, the law permits several categories of deductions. Debts owed by the decedent at death — mortgages, credit card balances, personal loans, and medical bills — are subtracted first. Funeral and burial expenses are deductible, as are administrative costs such as executor fees, attorney fees, and accounting charges incurred during the settlement process. The marital deduction allows unlimited transfers to a surviving spouse who is a U.S. citizen, effectively deferring estate tax until the second spouse dies. Charitable deductions provide a dollar-for-dollar reduction for bequests to qualified charitable organizations, making philanthropic giving one of the most powerful estate tax planning strategies available.
After applying all deductions, you arrive at the adjusted gross estate. The taxable estate calculator then adds back any taxable lifetime gifts — transfers made during your lifetime that exceeded the annual exclusion amount ($19,000 per recipient for 2025). This is because the estate tax and gift tax share a unified exemption: every dollar of exemption used during your lifetime to shelter taxable gifts reduces the exemption available at death. Our inheritance tax calculator handles this adjustment automatically, giving you an accurate picture of your total tax exposure.
What Is Portability and How Does the DSUE Amount Affect Your Estate Tax?
Portability is one of the most valuable provisions in current estate tax law, and our online estate tax calculator fully supports it. When the first spouse in a married couple dies, any unused portion of their federal estate tax exemption — known as the Deceased Spouse's Unused Exclusion (DSUE) amount — can be transferred to the surviving spouse. This effectively allows a married couple to shelter up to $27.98 million (2025 figures) from federal estate tax without establishing complex trusts.
To claim portability, the executor of the first spouse's estate must file a timely federal estate tax return (Form 706), even if no tax is owed. The IRS has issued revenue procedures allowing late portability elections in certain circumstances, but timely filing remains the safest approach. Our estate value calculator lets you toggle portability on or off and enter the specific DSUE amount, so you can model both scenarios and see the difference in tax liability. For surviving spouses, this feature alone can eliminate federal estate tax on combined estates that would otherwise face substantial taxation.
Why Is the 2026 TCJA Sunset So Important for Estate Planning?
The Tax Cuts and Jobs Act of 2017 roughly doubled the federal estate tax exemption, raising it from approximately $5.5 million to $11.18 million per person (adjusted annually for inflation). This provision is scheduled to sunset on January 1, 2026, unless Congress acts to extend or modify it. Our property inheritance calculator includes projected exemption amounts for 2026 ($7 million), 2027 ($7.2 million), and 2028 ($7.4 million), reflecting the expected reversion to pre-TCJA levels plus inflation adjustments.
This sunset creates urgency for estate planning. Individuals with estates between $7 million and $14 million who currently owe no federal estate tax could face significant liability starting in 2026. The "compare years" feature in our estate planning tax calculator lets you model the same estate across multiple tax years, making it immediately clear how the changing exemption affects your bottom line. Many estate planners recommend that clients consider accelerating gifting strategies or establishing irrevocable trusts before 2026 to lock in the current higher exemption.
Which States Have Their Own Estate or Inheritance Tax?
Beyond the federal level, several states impose their own estate or inheritance taxes, and these can apply at much lower thresholds than the federal exemption. Our asset tax calculator includes data for all 18 states (plus the District of Columbia) that currently levy some form of death-related tax. Massachusetts and Oregon have the lowest exemptions at $2 million and $1 million respectively — meaning estates that are well below the federal exemption threshold can still face state-level taxation.
The distinction between estate taxes and inheritance taxes matters for planning purposes. An estate tax is levied on the total estate before distribution, while an inheritance tax is levied on individual beneficiaries based on their relationship to the decedent and the amount they receive. States like Pennsylvania, New Jersey, Kentucky, Iowa, and Nebraska impose inheritance taxes with rates that vary based on whether the heir is a spouse, child, sibling, or unrelated individual. Maryland uniquely imposes both an estate tax and an inheritance tax, though credits prevent double taxation in most cases.
Our estate duty calculator handles the interplay between federal and state taxes, showing you the combined tax burden and net amount your heirs will receive. When selecting a state, the tool displays the applicable exemption, top marginal rate, and estimated state tax liability. This holistic view is essential because some planning strategies that reduce federal tax may increase state tax, or vice versa.
What Deductions and Strategies Can Reduce Estate Tax Liability?
Several well-established strategies can substantially reduce or eliminate estate tax liability, and understanding them helps you use this wealth transfer calculator more effectively. The unlimited marital deduction allows everything to pass to a surviving U.S. citizen spouse free of estate tax. However, this merely defers taxation — the combined estate will eventually face tax when the second spouse dies. For this reason, many planners recommend establishing a credit shelter trust (also called a bypass trust or B trust) to use the first spouse's exemption rather than relying solely on portability.
Charitable giving strategies offer dual benefits: reducing your taxable estate while supporting causes you care about. A charitable remainder trust provides income during your lifetime while passing the remainder to charity at death, removing those assets from your estate entirely. Donor-advised funds, charitable lead trusts, and direct bequests to qualified organizations all generate deductions that our estate finance calculator captures in the charitable deductions field.
Annual gift exclusion transfers — currently $19,000 per recipient per year for 2025 — allow you to transfer wealth during your lifetime without using any of your unified exemption. A married couple can gift $38,000 per year to each recipient (child, grandchild, or anyone else) with no gift tax consequences. Over time, this can remove substantial wealth from your estate. Additionally, direct payments to educational institutions for tuition or to medical providers for healthcare costs are exempt from gift tax without any dollar limit.
Irrevocable life insurance trusts (ILITs), grantor retained annuity trusts (GRATs), qualified personal residence trusts (QPRTs), and family limited partnerships (FLPs) represent more sophisticated planning vehicles that can dramatically reduce estate tax exposure for ultra-high-net-worth individuals. While our trust fund calculator focuses on estimating the tax itself rather than modeling specific trust structures, the deduction fields allow you to input the projected value of assets already removed from the estate through these techniques.
How Accurate Is This Estate Tax Estimate and When Should You Consult a Professional?
This free online estate calculator uses the actual federal graduated rate schedule and current exemption amounts published by the IRS. The calculations are performed server-side using the same mathematical formulas that professional estate planning software employs. However, several important caveats apply. First, estate valuation is often the most contentious aspect of the process — real estate appraisals, business valuations, and the treatment of minority interests or marketability discounts can significantly affect the gross estate figure you input. Second, the tool uses simplified state tax calculations based on published rates and exemptions; actual state taxes may vary based on specific state laws, available credits, and interaction with federal taxes.
Our estate settlement calculator is designed as an educational and planning estimation tool. It provides a reliable starting point for understanding your potential estate tax exposure and comparing different scenarios. For estates approaching or exceeding the federal or state exemption thresholds, professional consultation with an estate planning attorney, CPA, or certified financial planner is essential. These professionals can address issues like generation-skipping transfer tax (GSTT), special valuation elections for farms and closely held businesses (IRC §2032A), installment payment elections (IRC §6166), and the complex interaction between federal and state tax regimes.
What Are the Current Federal Estate Tax Rates and Brackets?
The federal estate tax uses a graduated rate structure that applies to the taxable amount exceeding the exemption. The inheritance value calculator breaks down these brackets in detail. The first $10,000 above the exemption is taxed at 18%, then 20% on the next $10,000, increasing through 22%, 24%, 26%, 28%, 30%, 32%, 34%, 37%, and 39% before reaching the top rate of 40% on amounts exceeding $1 million above the exemption. In practice, because of the large exemption amount, the marginal rate on the first dollar of taxable estate is effectively 40% for most taxable estates — the lower brackets only apply to the relatively small initial amounts.
The effective estate tax rate — the total tax divided by the total taxable estate — is always lower than the marginal rate. Our death tax calculator displays both rates so you can understand the true percentage of your estate going to taxes. For an estate with $2 million in taxable amount above the exemption, the effective rate is approximately 37.8%, not the top marginal 40%. This distinction is important for accurate planning.
Can This Tool Help With Gift Tax Planning?
Yes. Because the federal gift tax and estate tax are unified into a single system, our estate transfer calculator includes a field for taxable lifetime gifts. The unified credit applies to the combined total of taxable gifts made during life and the taxable estate at death. If you made $3 million in taxable gifts during your lifetime, that amount is added back to your adjusted gross estate before applying the exemption. This ensures you cannot avoid estate tax simply by giving away assets before death.
The annual gift exclusion ($19,000 per recipient for 2025) does not count against the lifetime exemption and should not be entered in the lifetime gifts field. Only gifts that exceeded the annual exclusion amount — and for which you filed Form 709 — should be included. Our family inheritance calculator provides a note explaining this distinction in the Lifetime Gifts tab.
What Makes This the Best Free Estate Tax Calculator Available Online?
Several features distinguish this easy estate tax calculator from competing tools. First, it covers both federal and state taxes in a single interface, eliminating the need to use multiple calculators. Second, the year comparison feature allows you to model the same estate across different tax years — critically important given the impending 2026 TCJA sunset. Third, portability support lets surviving spouses accurately model their combined exemption. Fourth, the graduated bracket breakdown shows exactly how each dollar of taxable estate is taxed, providing educational transparency. Fifth, export options (CSV, print, copy) make it easy to share results with your financial advisor or estate attorney.
The server-powered calculation engine ensures accuracy and speed, processing complex scenarios with multiple deductions and state taxes in milliseconds. All calculations happen in real time as you type, with no need to click a "calculate" button. The tool is completely free, requires no registration, stores no personal data, and works on any device. Whether you are a financial advisor modeling scenarios for clients, an individual beginning their estate planning journey, or an executor trying to estimate the tax liability on a decedent's estate, this online inheritance tax tool provides the instant, reliable estimates you need.
The sample scenarios preloaded into the calculator cover common situations — from moderate estates that may not owe any federal tax to ultra-high-net-worth estates facing maximum rates, married couples utilizing portability, and philanthropically inclined individuals maximizing charitable deductions. These samples serve as both educational examples and starting points for your own analysis. The random button generates varied scenarios so you can quickly understand how different estate compositions affect tax outcomes.
For 2025 and beyond, estate tax planning has never been more important. The combination of historically high asset values, an expiring exemption increase, and the complexity of state-level taxes creates a landscape where proactive planning can preserve generational wealth. Use this taxable estate calculator as your first step toward understanding your estate's tax exposure, then work with qualified professionals to implement the strategies that best serve your family's goals.