Missouri Estate Tax Calculator (2026 Exemption Limits & Inheritance Liabilities)

Missouri charges nothing at death, which puts it in an unusual position: it borders eight states, one of which (Nebraska) still taxes beneficiaries and another (Illinois) still taxes estates above $4,000,000. Missouri is one of the 38 states with no separate state-level estate tax on the books.

Estates of Missouri decedents pass to beneficiaries without a state exemption threshold or bracket schedule to check against; the only estate tax exposure comes from the federal system, which exempts more than $15,000,000 per individual for 2026.

For most Missouri families, that leaves the federal exemption as the only threshold worth tracking, and estate planning here tends to center on probate avoidance and asset titling rather than minimizing a state-level tax bill that does not exist.

That does not make Missouri estate planning trivial, though: funding revocable trusts, keeping beneficiary designations current, and clearing title on jointly held property still determine how smoothly assets pass, even with no state tax calculation involved.

None of that changes if the decedent also owned property in a state that does tax estates: that property can still be taxed there, regardless of Missouri's own rules or the fact that Missouri is a Midwest state split by the Missouri River.

There is no Missouri estate tax statute, so there is no exemption to clear and no rate schedule to walk. The calculator confirms that rather than computing against a threshold, and the state tax line is $0 at every estate size.

1. Value the gross estate. Fair market value at the date of death of all real property, business interests, securities, cash, and life insurance proceeds the decedent owned.
2. Subtract allowable deductions. Debts, administrative expenses, qualifying charitable bequests, and the unlimited marital deduction come off the gross figure. This is bookkeeping here rather than tax math, since no state rate is applied to the result.
3. Look Missouri up in the state table. It is not among the twelve states that impose an estate tax, so no exemption threshold or bracket schedule is loaded.
4. Return $0. The net estate passes to beneficiaries with no Missouri reduction, whether it is $500,000 or $50,000,000.

The federal estate tax is a separate return with its own exemption, above $15,000,000 per individual for 2026, and this calculator does not compute it. It also does not carry over a deceased spouse's unused federal exemption, add back lifetime taxable gifts, or apply the generation-skipping transfer tax.

1. Start with the gross estate. This example uses a $5,000,000 gross estate: the fair market value of all real property, business interests, equities, cash, and life insurance the decedent owned at death, before deductions.
2. Check Missouri's estate tax status. Missouri is one of the 38 states with no separate state-level estate tax, so there is no state exemption threshold or bracket schedule to apply.
3. Compute the state estate tax due. Because Missouri taxes no estates at any size, the calculator returns $0.00 in state tax. A $5,000,000 estate and a $50,000,000 estate both owe Missouri nothing.
4. Distribute the net estate. With no state tax subtracted, the full $5,000,000.00 gross estate passes to beneficiaries as the net estate distributed.
5. What this excludes. This is Missouri's state-level result only; federal estate tax is computed separately against the $15,000,000+ federal exemption per individual for 2026 on IRS Form 706.

Missouri's row in the statutory table has no exemption and no brackets, so the twelve-row sweep returns the same figure twelve times. The comparison across the state line is where the numbers are.

The sweep is constant. The engine returns $0.00 at a $1,000,000 estate, at $5,000,000 and at $15,000,000. Exemption threshold and taxable estate above exemption both read $0.00 at every size, and net value distributed to heirs equals the gross estate exactly: $5,000,000.00 and $15,000,000.00. Another $1,000,000 of estate value adds $0.00 of Missouri tax whether the estate is small or very large.

Pricing the zero against neighbours and near neighbours. Of Missouri's eight bordering states none currently levies an estate tax, but Iowa and Kentucky sit within the region with inheritance-tax histories and Illinois taxes estates above a $4,000,000 exemption. A $5,000,000 estate that would compute to $0.00 here would face Illinois exposure across the river from St. Louis. Further afield, the same estate computes to $292,000 in Massachusetts and $260,000 in Minnesota, and at the $15,000,000 scenario to roughly $1,767,200 and $1,659,000 against Missouri's $0.00.

What the deductions input does, and does not do. Entering $1,000,000 of deductions against a $5,000,000 gross estate leaves the Missouri tax at $0.00 and moves the net-value-distributed figure to $4,000,000.00. Because the engine subtracts deductions from gross before any rate lookup, and Missouri has no rate, the input can only ever change the presentation of what passes to heirs. There is no combination of gross value and deductions that produces a non-zero Missouri estate tax on this page.

What the engine reads, and what it cannot. Missouri's table entry carries hasEstateTax: false and the function returns immediately, which is why the exemption output is $0.00 rather than a stored figure. The calculator holds no federal exemption and runs no federal computation, so nothing on this page reflects the federal threshold. It also has no field for asset location, and out-of-state real property in an estate tax jurisdiction remains reachable by that state regardless of Missouri domicile, an exposure the $0.00 headline does not and cannot capture.

• Federal generation-skipping transfer (GST) tax under IRC Chapter 13.
• Ancillary probate requirements for real property situated in other jurisdictions.
• Complex liquidity discounts for minority non-voting family business entities.
• State-specific inheritance taxes levied directly on beneficiaries (e.g. PA, NJ, MD, KY, NE).

• Assuming State Exemption Matches Federal: Forgetting that states like Oregon ($1.0M) and Massachusetts ($2.0M) tax estates far below the federal threshold.
• The "Cliff" Effect in Specific States: Failing to recognize that states like New York eliminate the exemption entirely if the estate exceeds 105% of the threshold.
• Out-of-State Real Property Exposure: Holding real estate in states with active estate taxes exposes non-resident estates to proportional state estate taxes.
• Failing to Fund Revocable Living Trusts: Assets held outside trust structures are subjected to public probate proceedings and statutory executor fees.

Also consulted: Missouri Department of Revenue: General state tax administration; Missouri levies no state-level estate tax, so only the federal estate tax applies.