Missouri Estate & Inheritance Tax — Best Proven Guide (2026)

✓ Verified June 2026

This guide explains Missouri estate tax and inheritance tax in plain English — whether Missouri taxes your estate, who pays, the exact exemptions, and how the federal estate tax fits in for 2026. All figures verified as of June 2026.

Missouri Estate & Inheritance Tax at a Glance

Here is exactly how Missouri estate tax and inheritance tax work:

Spousal portability (federal): Yes. The surviving spouse may elect portability of the deceased spouse’s unused federal estate tax exemption (DSUE). The executor must file IRS Form 706 to elect portability, even if no estate tax is owed. This allows a married couple to shield up to 30000000 combined.

Gift tax: Missouri has no state gift tax. Federal gift tax applies with an annual exclusion of 19000 per recipient for 2026. Gifts above the annual exclusion reduce the 15000000 lifetime exemption.

Estate Tax vs Inheritance Tax: The Difference

People use these two terms as if they mean the same thing, but they are different taxes that work in opposite ways. An estate tax is charged to the estate itself before anything is handed out — the estate pays it, then the heirs receive what is left.

An inheritance tax is charged to the people who receive the money — each heir may owe tax on their share, and the rate often depends on how closely related they were to the person who died.

This matters for Missouri families because the two taxes are set by different rules. The federal government only has an estate tax, never an inheritance tax. A state can have an estate tax, an inheritance tax, both, or — as in most states — neither. When you know which one (if any) applies in Missouri, you know exactly who would be responsible for paying.

How the Federal Estate Tax Works

No matter which state you live in, the federal estate tax sets a very high exemption, which is the amount an estate can be worth before any federal tax is owed. Estates below that exemption owe no federal estate tax at all, and the overwhelming majority of estates fall well below it.

For 2026, the federal exemption is $15 million per person — a level the One Big Beautiful Bill Act made permanent in 2025 and indexes for inflation — so the figure in the table above is current and is not scheduled to drop.

Married couples get an extra advantage. Anything left to a surviving spouse passes free of federal estate tax under the unlimited marital deduction, and a surviving spouse can often carry over the unused portion of their late spouse’s exemption — a feature called portability. In practice this means a married couple can shield roughly double the individual exemption before federal estate tax ever enters the picture.

Who Actually Owes Estate Tax in Missouri

Missouri imposes no estate tax and no inheritance tax, so the vast majority of Missouri families will owe zero state death tax. Only estates exceeding the 15000000 federal exemption (or 30000000 for married couples) may face the 40 percent federal estate tax.

Families with estates approaching those thresholds, or those who own property in states that do impose an estate or inheritance tax, should consult a licensed estate planning attorney or tax professional.

Other Missouri estate/inheritance tax rules: Missouri’s estate tax statute (RSMo sections 145.011 through 145.955) was never formally repealed. It imposed a tax equal to the state death tax credit allowed by the IRS. When the federal government replaced the state death tax credit with a deduction effective January 1, 2005, Missouri’s estate tax became inoperative. No Missouri estate tax return filings are required.

If the IRS were ever to reinstate a state death tax credit, Missouri’s estate tax could become active again under the existing statute. Missouri is also one of 44 states with no inheritance tax; only Iowa, Kentucky, Maryland, Nebraska, New Jersey, and Pennsylvania impose one.

What This Means for Your Missouri Family

The bottom line for Missouri: because Missouri has neither a state estate tax nor a state inheritance tax, almost every family here will owe no death tax of any kind at the state level. The only tax that could apply is the federal estate tax, and that affects only the largest estates — those above the federal exemption shown above.

For the vast majority of Missouri families, the answer to “will we owe estate tax?” is simply no.

Either way, planning ahead helps. Keeping beneficiary designations current, holding property in the right way, and — for larger estates — talking to a tax professional can keep more of what you have built in your family’s hands. None of this requires owing estate tax; it is simply good estate planning.

It also helps to know what an estate tax does not touch. Life insurance paid to a named beneficiary, retirement accounts with named beneficiaries, and assets held in certain trusts generally pass outside the taxable estate, which is one reason these tools are so common in planning.

Day-to-day inheritances that most Missouri families receive — a home, a bank account, a car, personal belongings — are almost never large enough to trigger any estate tax at all. If you are unsure where your family stands, the safest step is a short conversation with a licensed Missouri estate or tax professional who can look at the actual numbers.

Understanding Missouri Estate and Inheritance Tax

Worrying about Missouri estate tax is common, but most families owe nothing. Whether Missouri estate tax applies depends on the size of the estate and whether Missouri levies an estate tax, an inheritance tax, or neither. The table above shows the exact exemptions and rates, plus the current federal exemption, so you can see where you actually stand on Missouri estate tax.

If your estate is large enough that Missouri estate tax could apply, a licensed tax professional in your state can help you plan.

Official Missouri Sources & Resources

• Missouri Department of Revenue: https://dor.mo.gov/taxation/individual/tax-types/estate.html
• Missouri Estate Tax Statute: https://revisor.mo.gov/main/OneSection.aspx?section=145.011
• Internal Revenue Service — Estate Tax: irs.gov
• Cornell Legal Information Institute: law.cornell.edu/wex

This Missouri estate-tax guide was last verified against official sources in June 2026. Tax laws and exemptions change yearly — verify with your state revenue department or a licensed tax professional.

More Missouri Wills & Probate Guides

• Missouri Wills & Estate Planning
• Missouri Probate Process
• Dying Without a Will in Missouri
• Missouri Small Estate Affidavit
• Missouri Living Trust
• Probate Cost Calculator
• All 51 States

Disclaimer: This guide is informational only and is not legal or tax advice. Estate, probate, and tax laws change and vary by state and county. Verify current rules and dollar figures with your state’s court, statute, or a licensed attorney or tax professional before acting. For urgent matters like an active probate or a tax deadline, consult a licensed professional in your state right away.