Do you owe capital gains tax when you sell a Sioux Falls home?

For most people, no. South Dakota has no state income tax, so there’s no state capital gains tax on your sale — a real advantage over almost every neighboring state. On the federal side, the IRS lets you exclude up to $250,000 of gain if you’re single and $500,000 if you’re married filing jointly, as long as you owned and lived in the home for two of the last five years. With Sioux Falls sale prices where they are, that exclusion covers the vast majority of sellers. You’d only owe federal tax if your gain runs past those limits, or if the property was a rental, a second home, or one you owned less than two years.

By Jeff Merrill | August 14, 2026

It’s one of the first questions sellers ask me once they realize how much their home has gone up: “If I sell, how much of that is the tax man going to take?”

The good news is that in South Dakota, the answer is usually “nothing” — and even when it isn’t, it’s a lot less than people fear. But there are a handful of situations where a tax bill is real, and knowing which side of the line you’re on before you list can save you an ugly surprise next April.

Here’s how capital gains tax actually works on a home sale around here, with real Sioux Falls numbers.

South Dakota’s built-in advantage

Start with the part that works in your favor: South Dakota has no state income tax, which means no state capital gains tax. When you sell your home for a profit here, the state takes zero.

That’s not true in most of the country. A seller in Minnesota, Iowa, or Nebraska can owe several percent of their gain to the state on top of whatever the IRS charges. In South Dakota, that whole layer disappears. It’s one of the quiet reasons this is a good place to build equity and cash it out.

So the only question left is federal — and for most sellers, that question has a happy ending too.

The federal exclusion that covers most sellers

The IRS gives homeowners a large break on the sale of a primary residence, known as the Section 121 exclusion. If you qualify, you can exclude a big chunk of your gain from tax entirely:

  • Up to $250,000 of gain if you file taxes as single
  • Up to $500,000 of gain if you’re married filing jointly

To qualify, you have to pass two tests during the five years before the sale: you owned the home for at least two years, and you lived in it as your main residence for at least two years. The two years of living there don’t have to be back to back, and you can use this exclusion once every two years.

Here’s what trips people up — and it’s good news. The tax is on your gain, not your sale price. Your gain is what’s left after you subtract your cost basis and your selling costs from the sale price. It’s almost always far less than the check you walk away with.

Let’s run a typical Sioux Falls example. Say you bought a home in the Whittier or west-side area for $225,000 back in 2015, and today you sell it for $345,000 — right around the current metro median. On paper that’s a $120,000 gain. But you put in a finished basement and a new roof over the years, and you’re paying a commission and the South Dakota transfer fee to sell. After those adjustments your actual taxable gain is well under $120,000 — and since it’s under the $250,000 single limit (let alone the $500,000 married limit), you owe nothing in federal capital gains tax.

That’s the reality for the large majority of homeowners selling in Sioux Falls, Brandon, Harrisburg, and Tea. The exclusion is generous enough to swallow a normal amount of appreciation whole.

What actually counts toward your gain

Because the tax is on the gain, the numbers you use to calculate it matter. Two things lower your gain, and it pays to track them.

Your cost basis starts with what you paid for the home, then goes up with capital improvements you made while you owned it. Improvements are the projects that add value or extend the home’s life:

  • Finished basement, room addition, or new deck
  • New roof, furnace, central air, or windows
  • Kitchen or bathroom remodel
  • New driveway, fence, or major landscaping

Routine repairs and maintenance — fixing a leak, repainting, replacing a water heater like-for-like — don’t count. The line isn’t always obvious, so keep receipts on the big projects. Every dollar of legitimate improvement is a dollar less of taxable gain.

Your selling costs also come off the top. The real estate commission and the South Dakota transfer fee (SDCL 43-4-21, $0.50 per $500 of value, paid by the seller) both reduce your gain. I break the full seller cost picture down in my guide to what it costs to sell a house in Sioux Falls, and those same costs do double duty by shrinking your tax exposure.

When you actually would owe

Most sellers are in the clear. But here are the situations where a federal tax bill is genuinely on the table — these are the ones worth flagging before you list.

Your gain runs past the exclusion. If you’ve owned a long time, or the property is a higher-end home in McKennan Park or an acreage that’s appreciated hard, a single filer with more than $250,000 of gain (or a couple over $500,000) pays federal tax on the amount above the limit. That portion is taxed as a long-term capital gain — 0%, 15%, or 20% depending on your total taxable income, with most sellers landing in the 15% bracket. Very high earners may also owe an extra 3.8% net investment income tax.

It’s a rental or investment property. The exclusion is only for a primary residence. Sell a pure rental and you owe capital gains tax on the profit, plus depreciation recapture — the depreciation you deducted over the years gets taxed back, at up to 25%. A 1031 exchange can defer all of it if you roll the money into another investment property, but the rules are strict and time-sensitive, so loop in a CPA before you list.

You owned it less than two years. Sell before hitting the two-year mark and you generally lose the exclusion — and if you owned it under a year, the gain is taxed at higher short-term rates. The exception: if you’re moving because of a job change, a health issue, or certain unforeseen circumstances, you can claim a partial exclusion prorated by the months you were there. That covers a lot of real-life moves.

It was a second home or vacation property. No exclusion on those either, unless you convert one to your primary residence and meet the two-year test.

The inherited-home question

This one comes up constantly, and the answer relieves a lot of families. If you inherited a home — Mom’s house in Brandon, say — you don’t owe tax on decades of appreciation you never lived through.

When you inherit property, its cost basis “steps up” to the fair market value on the date of death. So if the home was worth $300,000 when you inherited it and you sell it for $310,000 a few months later, your taxable gain is about $10,000, not the full run-up from whatever your parents paid in 1985. Get an appraisal as of the date of death to lock in that basis. In many inherited sales, the tax owed is little or nothing.

Whether you’re selling the family home or your own, pricing it right still drives your actual net — and that’s a separate skill from the tax math. If you’re getting ready to list, my guide to pricing your home to sell in Sioux Falls walks through how to land on a number the market and the appraiser will both back.

Frequently Asked Questions

Do I pay capital gains tax when I sell my house in South Dakota?

South Dakota has no state income tax, so there’s no state capital gains tax on your home sale. Federal tax can still apply, but the IRS lets you exclude up to $250,000 of gain if you’re single or $500,000 if married filing jointly, provided you owned and lived in the home for two of the last five years. Most Sioux Falls sellers fall under that limit and owe nothing.

How long do I have to live in my home to avoid capital gains tax?

You need to have owned and lived in the home as your main residence for at least two of the five years before the sale. The two years don’t have to be consecutive. If you move for a job, health reason, or another qualifying event before two years, you may still get a partial exclusion based on the months you lived there.

Do home improvements reduce my capital gains?

Yes. Capital improvements like a finished basement, a new roof, an addition, or a kitchen remodel add to your cost basis, which lowers your taxable gain. Routine repairs and maintenance don’t count. Your selling costs — the commission and the South Dakota transfer fee — also reduce the gain, so keep your receipts and closing statement.

Do I owe capital gains tax on an inherited house in Sioux Falls?

Usually very little. When you inherit a home, its cost basis steps up to the fair market value on the date of death, so you’re only taxed on any gain above that value. If you sell an inherited Sioux Falls home soon after inheriting it, the taxable gain is often close to zero. An appraisal as of the date of death sets your basis.

What if I sell a rental or investment property in Sioux Falls?

The $250,000/$500,000 exclusion is only for a primary residence, so a pure rental doesn’t qualify. You’ll owe federal capital gains tax on the profit plus depreciation recapture, taxed up to 25%, on the depreciation you claimed. A 1031 exchange can defer that tax if you reinvest in another investment property — talk to a CPA before you list.

The bottom line

If you’re selling the home you live in, the odds are strong you’ll owe zero capital gains tax in South Dakota — no state tax at all, and a federal exclusion big enough to cover most Sioux Falls gains. The sellers who need to plan ahead are the ones with very large gains, a rental or second home, or a sale inside the two-year window.

The catch is that “how much is my gain” depends on your basis, your improvements, and your selling costs — and getting those numbers right is exactly the kind of thing worth sorting out before you list, not after. I’ll run your net proceeds and flag anything that could trigger a tax question, then point you to a good local CPA if your situation calls for one.

Thinking about selling and want to know what you’d actually keep? Call or text me at 605-201-2846, or reach out through siouxfallsgreathomes.wordpress.com. Let’s run your real numbers.

This article is general information, not tax or legal advice. Tax rules change and every situation is different — confirm your specifics with a qualified CPA or tax professional before making decisions.

About Jeff Merrill
Jeff Merrill leads The Jeff Merrill Team, powered by eXp Realty, serving Sioux Falls and the surrounding South Dakota communities of Madison, Mitchell, Canistota, and beyond. He helps motivated buyers, sellers, and new agents cut through the hype in real estate with honest guidance, hands-on mentorship, and a track record of real results. Connect with Jeff at siouxfallsgreathomes.wordpress.com or call 605-201-2846.