Estate Tax Calculator

Planning for Wealth Transfer

Estate tax—sometimes called the "death tax"—applies to the transfer of wealth when someone passes away. For estates exceeding substantial exemption thresholds, tax rates can reach 40% on amounts above the exemption. The estate tax calculator helps individuals understand whether their estate might face this levy and estimate potential tax liability, enabling planning that can preserve more wealth for heirs.

Most estates won't owe federal estate tax due to high exemption levels—currently over $13 million per individual, doubled for married couples who plan properly. However, these exemptions are scheduled to decrease significantly in 2026, potentially bringing many more estates into taxable territory. Additionally, some states impose their own estate or inheritance taxes with much lower thresholds.

The calculator reveals whether estate tax planning deserves attention based on current and projected estate values, enabling timely action before wealth transfer becomes necessary.

Federal Estate Tax Structure

The federal estate tax applies to the total fair market value of everything you own at death—real estate, investments, retirement accounts, life insurance, business interests, personal property—minus allowable deductions for debts, funeral expenses, charitable bequests, and spousal inheritance.

The gross estate includes assets you might not consider "yours" in a practical sense. Life insurance you own on your own life is included, even though you never receive the proceeds. Jointly owned property might be partially or fully included depending on ownership structure.

After deductions, if the taxable estate exceeds the applicable exemption amount, the excess is taxed at graduated rates reaching 40% for amounts over approximately $1 million above the exemption.

The unlimited marital deduction means no federal estate tax is owed on amounts passing to a surviving U.S. citizen spouse, regardless of size. However, this defers rather than eliminates tax—the surviving spouse's estate will include inherited assets.

The Exemption and Its Uncertainty

The current federal exemption is approximately $13.61 million per person (2024), indexed for inflation annually. Married couples can effectively double this through portability—a surviving spouse can use any unused portion of the deceased spouse's exemption.

This exemption level is historically high, resulting from the Tax Cuts and Jobs Act of 2017. However, this provision sunsets after 2025. Without congressional action, the exemption is scheduled to drop roughly in half—to approximately $6-7 million per person, adjusted for inflation.

This scheduled reduction creates urgency for estate planning. Estates that are safely below current thresholds might face significant taxation under reverted rules. The calculator can model both current and potential future exemption levels.

State Estate and Inheritance Taxes

Several states impose their own estate taxes, often with much lower exemption thresholds than the federal exemption. As of recent years, states with estate taxes include: Connecticut, Hawaii, Illinois, Maine, Maryland, Massachusetts, Minnesota, New York, Oregon, Rhode Island, Vermont, Washington, and the District of Columbia.

Exemption levels vary—some match federal exemptions while others tax estates exceeding $1-2 million. Rates typically range from 0.8% to 20%, though structures differ.

Additionally, some states impose inheritance taxes—levied on beneficiaries based on what they receive, rather than on the estate itself. Iowa, Kentucky, Maryland, Nebraska, New Jersey, and Pennsylvania have inheritance taxes. Rates often depend on the beneficiary's relationship to the deceased, with closer relatives (spouses, children) paying lower rates or being exempt.

The calculator incorporates state-level taxes based on residence, providing combined federal and state estimates.

Estate Planning Strategies

Understanding potential estate tax enables proactive planning. Common strategies include:

Annual exclusion gifts: You can gift up to $18,000 per recipient annually (2024) without affecting your lifetime exemption. A couple can gift $36,000 per recipient. Over years, substantial wealth can transfer tax-free.

Lifetime gifts using exemption: Larger gifts reduce your estate but use exemption that would otherwise be available at death. With current high exemptions potentially decreasing, some planners recommend "using it or losing it."

Irrevocable life insurance trusts (ILITs): Life insurance owned by an irrevocable trust is excluded from the insured's estate, removing potentially large death benefits from taxation.

Charitable planning: Bequests to qualified charities are fully deductible. Charitable remainder trusts and other structures can provide income during life while removing assets from taxable estates.

Family limited partnerships: Can facilitate wealth transfer at discounted valuations, though these structures face IRS scrutiny and require careful implementation.

Valuation Considerations

Estate tax is based on fair market value at death (or alternate valuation date if elected). Accurate valuation matters significantly.

Publicly traded securities are straightforward—market prices establish value. Closely held businesses, real estate, art, and collectibles require appraisal.

Some assets qualify for special valuation rules. Qualified real property used for farming or closely held business purposes can be valued based on actual use rather than highest-and-best use, potentially reducing taxable value significantly.

The calculator provides space for various asset categories, helping organize estate composition for valuation purposes.

Life Insurance Complications

Life insurance creates estate planning complications because death benefits can be substantial but aren't "felt" during life. A $5 million life insurance policy owned by the insured is included in their estate, potentially pushing otherwise non-taxable estates over exemption thresholds.

Solutions include ownership by an irrevocable trust or by beneficiaries themselves. Existing policies can be transferred, though a three-year rule includes transferred policies in the estate if death occurs within three years of transfer.

When entering life insurance in the calculator, ownership structure determines whether the death benefit is included in the taxable estate.

Portability Between Spouses

Portability allows a surviving spouse to use any unused exemption from their deceased spouse, effectively doubling the exemption for couples who take proper steps.

Portability isn't automatic—it requires filing an estate tax return for the first spouse to die, even if no tax is owed, to preserve the unused exemption. Missing this filing can waste millions in exemption.

The calculator can model scenarios for married couples, showing how portability affects combined exemption and potential tax on the surviving spouse's estate.

Planning Horizon

Estate tax planning is inherently uncertain. Tax laws change, exemptions adjust, asset values fluctuate, and life circumstances evolve. Planning done today might need revision as situations change.

The current uncertainty around 2026 exemption reduction makes planning particularly challenging. Conservative planning might assume lower exemptions; aggressive planning might take advantage of current high exemptions while available.

The calculator enables scenario analysis—modeling current rules, potential reverted rules, and various estate values to understand the range of possibilities.

Using the Calculator

Enter total estimated estate value, broken down by category (real estate, investments, retirement accounts, life insurance, business interests, other assets). Include outstanding debts and expected expenses.

Indicate marital status and whether portability applies. Enter any planned charitable bequests.

The calculator computes gross estate, deductions, taxable estate, and estimated federal and state estate tax. Compare scenarios with different assumptions about exemption levels and estate values.

Use results to evaluate whether estate planning professional consultation is warranted and to understand the stakes involved in various planning strategies.

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Estate tax affects relatively few estates under current law, but the stakes are high for those affected—and scheduled changes may dramatically expand its reach. The calculator reveals whether your estate faces potential taxation and estimates the liability, enabling planning that preserves more wealth for intended beneficiaries rather than surrendering it to taxation.