Capital Gains Tax on Inherited Homes in Missouri: What Heirs Need to Know

How Capital Gains Tax Generally Works on an Inherited Home

Most heirs in Missouri end up owing little to no capital gains tax when they sell an inherited house. The reason is a federal rule called stepped-up basis, which essentially erases decades of appreciation from your tax bill the moment you inherit the property. In this guide I'll walk through how the rule actually works, the situations where heirs do owe real tax, and the framework most CPAs use before a sale, so you can have a productive conversation with one when the time comes.

Quick reminder up front: I'm a Realtor, not a tax pro. Read this as a primer to walk into your CPA meeting more informed, not as a substitute for that meeting.

A note before you read further: I'm a real estate agent, not a CPA or tax attorney. The information below explains how the federal and Missouri tax rules generally apply to inherited homes in 2026. It is not tax advice for your specific situation. Before making decisions that affect your taxes, work with a qualified CPA or tax professional. If you don't have one, I work with several CPAs in St. Louis and St. Charles who specialize in estate situations and I'm happy to make an introduction. No obligation. Just call or text 314-252-8416.



The Stepped-Up Basis Rule (And Why It Matters Most)

Stepped-up basis comes from Internal Revenue Code Section 1014. The plain language version goes like this: when you inherit property, your "cost basis" in that property is reset to the fair market value on the date of death. Not what the original owner paid. Not what the property was worth when they bought it. The current value, the day they died.

Why does this matter? Because capital gains tax is calculated on the difference between your basis and your sale price. Reset the basis to today's market value, and you wipe out decades of appreciation in one stroke.

Numbers below are illustrative only. Real basis calculations depend on documentation, valuation methods, and individual filing circumstances that only your CPA can sort out.

Here's a hypothetical example most Missouri heirs will recognize. Your dad bought the family home in University City in 1978 for $42,000. He lived there for 47 years. When he passed in 2026, the home had a fair market value of $310,000. You inherit the house and decide to sell it three months later for $325,000.Without stepped-up basis, your taxable gain would be $283,000 ($325,000 sale price minus $42,000 original basis).  At a 15% federal long-term rate, that's roughly $42,450 in federal tax.

With stepped-up basis, your basis becomes $310,000 (the fair market value on the date your dad died). Your taxable gain is $15,000 ($325,000 sale price minus $310,000 stepped-up basis). At 15%, that's $2,250 in federal tax.

Same house. Same sale. Roughly $40,000 difference in federal tax owed, just because of how inherited property is treated. Same caveat applies: those numbers illustrate the principle, not your specific situation.

This is the rule that does the heavy lifting for almost every inherited home sale I see. And it's why the first thing I tell heirs to do, before they decide whether to sell or how to sell, is to get a proper date-of-death appraisal. Without that documentation, the IRS can challenge your basis figure and use the original purchase price instead. Worth the few hundred dollars an appraisal costs to lock in the correct basis on paper.

Capital Gains Tax Rates for Inherited Property in 2026

When you sell an inherited home, the gain is automatically treated as long-term, regardless of how long you actually held the property. Even if you sold the house 30 days after inheriting it, the IRS treats it as a long-term gain. That is a significant advantage because long-term rates are much friendlier than short-term rates.

For 2026, federal long-term capital gains rates are 0% if your taxable income is $49,450 or less for single filers (or $98,900 or less for married filing jointly), 15% for most middle-income filers, and 20% for high earners (kicking in around $533,400 single or $613,700 married filing jointly).

A lot of heirs land in the 0% or 15% bracket and are shocked at how small the actual tax bill turns out to be. Especially after stepped-up basis has done its work to shrink the taxable gain in the first place.

Two extra wrinkles to know about. First, high-income filers may face an additional 3.8% Net Investment Income Tax on top of the long-term rate. Second, your taxable income for the year matters because adding a capital gain on top of your salary can push you from one bracket into the next.



Bracket math is what CPAs do for a living. I'm a Realtor, not a tax preparer, and I'm not going to model your specific bracket scenario. What I can do is point you to one if you don't already have one.

How Missouri Treats Inherited Property at the State Level

This is the section where Missouri stands out, and where most national articles about capital gains on inherited property get the story wrong if you read them in 2026.

Missouri has no state inheritance tax. Missouri Revised Statutes Chapter 145 governs estate transfers, and the state has not imposed an inheritance tax on heirs in modern memory.

Missouri has no state estate tax. Section 145.1000 RSMo automatically suspended the Missouri estate tax when the federal state death tax credit was eliminated in 2005. Unless that federal credit gets reinstated, Missouri does not collect estate tax. The federal estate tax still exists, but the 2026 exemption is $15 million per person under the One Big Beautiful Bill Act. Almost no Missouri family estate comes anywhere close to that threshold.

As of 2025, Missouri also has no state capital gains tax. This is brand new and most generic tax articles have not caught up yet. House Bill 594, signed into law by Governor Mike Kehoe on July 10, 2025, allows individual Missouri taxpayers to deduct 100% of capital gains reported on their federal return when calculating their Missouri adjusted gross income. The change is effective for tax years beginning January 1, 2025. Missouri became the first state in the country to fully exempt capital gains from individual income tax. The mechanics happen on Form MO-A, filed alongside your standard MO-1040.

What this generally means in plain English for an heir selling an inherited house in Missouri: after stepped-up basis shrinks your federal taxable gain to a small number, and after Missouri's new capital gains subtraction zeroes out the state tax entirely, the only number you typically owe anything on is the federal long-term rate applied to whatever modest gain accumulated between the date of death and the sale. For most heirs, that means a tax bill in the low four figures rather than the five figures they were bracing for.

Confirm the timing and exact application with your CPA before filing because this is brand-new law and the Missouri Department of Revenue is still publishing guidance, but the bottom line is clear: Missouri heirs in 2026 face one of the friendliest tax environments in the country for selling inherited real estate. If the property is still working its way through probate, the step-by-step guide to St. Louis County probate for executors covers that side of the process in detail.

Need a CPA introduction before talking real estate?

Most heirs I work with want to understand the tax piece before they decide whether to keep, rent, or sell. I work with several CPAs in St. Louis and St. Charles County who specialize in estate situations. I'm happy to introduce you with no obligation, no fees, and no expectation that you ever work with me on the real estate side. Just text "CPA referral" to 314-252-8416 and I'll connect you within 24 hours.

Five Concepts Heirs Generally Need to Understand Before Talking to a CPA

These are concepts, not strategies. The point is to walk into your CPA conversation already up to speed so you can ask sharper questions and get more out of the meeting.

First, stepped-up basis is calculated at the date of death, not the date of sale. If the home was worth $310,000 the day your mom passed and the market jumped to $340,000 by the time you sold three months later, your basis is still $310,000 and the $30,000 of post-death appreciation is taxable gain. A CPA can tell you whether this applies to your situation.

Second, the federal long-term rate generally applies to inherited property regardless of how long you held it. This is automatic. You do not need to wait a year to qualify for long-term treatment. A CPA can confirm this is being correctly reflected in your return.

Third, Section 121 (the home sale exclusion of $250,000 single or $500,000 married filing jointly) requires you to actually live in the home as your primary residence for two of the last five years. Most heirs cannot use Section 121 because they did not live in the inherited home. A CPA can tell you whether this exclusion is available to you.

Fourth, heirs in different income brackets may net different amounts from the same sale. If you and your sister inherit the house 50/50 and you are in the 15% federal bracket while she is in the 20% bracket plus NIIT, you will walk away with different after-tax amounts. A CPA can model this for everyone involved.



Fifth, documentation matters more than most heirs realize. Without a date-of-death appraisal documenting fair market value, the IRS can disallow your stepped-up basis figure and substitute the original purchase price, which would be devastating for your tax bill. A CPA will tell you what documentation is required and what is nice-to-have.

Common Mistakes Missouri Heirs Often Make

Skipping the date-of-death appraisal is the most common mistake and the most expensive. A $400 appraisal protects tens of thousands in stepped-up basis on paper. Talk to your CPA about exactly what documentation they want you to keep, but my consistent advice to clients is to get the appraisal done within the first 60 days.

Splitting proceeds among heirs without understanding that each heir's tax outcome can be different. The check sizes are equal at closing but the after-tax amounts can vary by thousands depending on each heir's income bracket. Worth a conversation upfront so nobody is surprised in April. If multiple heirs inherited the house together, there are coordination steps worth working through before the sale.

Trying to claim the home as a primary residence to use Section 121 when nobody actually lived there. The IRS scrutinizes this and the documentation requirements (utility bills, voter registration, drivers license, mail) are real. If you did not live in the home for at least 24 months out of the last 60, you generally do not qualify.

Holding on to the home too long out of sentiment, hoping the market will rise to justify the wait. Property taxes, insurance, maintenance, vacancy losses, and the basic cost of holding a vacant house can run $800 to $1,500 per month. The basis advantage you got at inheritance does not grow with time. The longer you hold, the more your real net proceeds shrink against the alternative of selling and reinvesting elsewhere.

All four of these are real estate observations, not tax advice. Your CPA is the right person to translate any of them into specific filing decisions for your situation.

How the Sale Process Affects Tax Outcomes

Whether you sell to a cash buyer or list with an agent does not change the stepped-up basis rule. Both paths use the same federal mechanics. What does change is the sale price, which directly affects how much taxable gain you recognize.

A cash sale typically nets less than a traditional listing. That is the trade-off for speed and certainty. If your inherited home is in good condition and you can wait 30 to 60 days, listing usually produces a better outcome. If the home is distressed, full of personal property, or you have heirs in three different states who want to be done with it tomorrow, the cash path makes more sense.



The 2024-2025 numbers from MARIS for our team show a 103.1% list-to-sale ratio against a market average of 98.5%. On a typical $300,000 inherited home, that's roughly $13,800 more than the average agent delivers. That delta goes straight into your after-tax proceeds.

Frequently Asked Questions

Do I have to pay capital gains tax on a house I inherited in Missouri?

In most cases, Missouri heirs owe little to no federal capital gains tax thanks to stepped-up basis, which resets the home's tax basis to its fair market value on the date of death. As of tax year 2025, Missouri also has no state capital gains tax under House Bill 594. Every situation is different, though, so confirm specifics with a CPA. The general rule is that the bill is a small federal number rather than the catastrophe most heirs feared.

What is stepped-up basis and how does it generally work?

Stepped-up basis is a federal rule that resets the cost basis of inherited property to its fair market value on the date the original owner passed. Decades of appreciation during the original owner's lifetime are essentially erased from your tax bill. You only pay capital gains tax on appreciation between the date of death and the date you sell.

Does Missouri have an inheritance tax?

No. Missouri does not have a state inheritance tax. Missouri also does not have a state estate tax (suspended under Section 145.1000 RSMo since 2005). And as of 2025, Missouri does not have a state capital gains tax under House Bill 594.

What if my siblings and I inherited the house together?

Each heir's share of the gain is reported separately on their own tax return, based on their percentage of ownership. Different heirs may end up with different after-tax outcomes depending on their individual income brackets. Coordinate with a CPA before the sale so everyone understands what to expect.

Can heirs use the Section 121 home sale exclusion on an inherited home?

Only if you actually lived in the home as your primary residence for at least 2 of the 5 years before the sale. Most heirs cannot claim Section 121 because they did not live in the inherited property. A CPA can confirm whether the exclusion applies to your specific situation.

Selling an Inherited House in Missouri: Your Next Step

Most heirs I work with go one of two directions.

Cash offer in 7 days. When the home is distressed, full of personal property, or you simply want it done and split the proceeds among heirs as fast as possible. No repairs, no showings, no contingencies. Closes in a week. Request a free, no-obligation cash offer here.

Traditional listing at 103.1% of list price. When the home is in reasonable condition and you want maximum proceeds. Our team's 2024-2025 list-to-sale ratio against MARIS data outperforms the market average by 4.6 percentage points. On a $300,000 home, that's roughly $13,800 more in your pocket. With 60+ five-star Google reviews from past clients to back up the process.

If you want to talk through your specific situation before deciding anything, call or text 314-252-8416. If you need a CPA introduction first, I can connect you within 24 hours. No obligation either way.

Disclaimer: Kyle Weindel is a licensed Missouri Realtor with Nettwork Global. He is not a CPA, tax attorney, or financial advisor. The content above is provided for general informational purposes only based on federal and Missouri tax law as of April 2026. Tax laws change. Individual circumstances vary. Nothing in this article constitutes tax, legal, or financial advice and should not be relied on as such. Consult a qualified Missouri CPA or tax attorney before making decisions that affect your tax filings, your estate, or any inherited property.