Capital Gains Tax on Selling a House in Arizona 2026: How the $250,000 Exclusion Works

Almost every seller who sits down with our team at Pillar Mortgage Group assumes there is a tax bill waiting at the end of the sale. For most people in Maricopa County there isn't one. The rules are generous. The mistakes are almost always about paperwork nobody kept, not about the tax itself.

Do you actually owe capital gains tax?

Probably not. Section 121 of the tax code lets you exclude up to $250,000 of gain if you file single, and up to $500,000 if you are married filing jointly. To use it you have to pass two tests, and both look at the five years ending on the day you sell.

• Ownership. You owned the home for at least 24 months inside that five year window.
• Use. It was your main home for at least 24 months inside that same window.

The 24 months do not have to be back to back. Nine months here and fifteen months there adds up fine. You also cannot claim the exclusion more than once every two years, which is the rule that catches people who move often. The full set of rules lives in IRS Publication 523, and the short version is at IRS Topic No. 701.

Run that against what the Valley actually did. The Maricopa County median sale price sat near $504,900 in August 2026, roughly 1% above a year earlier, with about 31% of sellers cutting their asking price at some point during the summer. Someone who bought a Chandler house at $340,000 in 2019 and sells at $505,000 is looking at roughly $165,000 of gross gain before selling costs. That is not close to the $250,000 line, let alone $500,000.

One piece of paper still matters. The title company issues a Form 1099-S at closing unless you sign a certification stating the sale qualifies for full exclusion. If a 1099-S does get issued, you have to report the sale on your return even when you owe nothing. Skipping it is how a zero tax sale turns into an IRS letter eighteen months later.

Your gain is not your sale price

Gain is the sale price, minus what it cost you to sell, minus your adjusted basis. Basis starts at what you paid and climbs every time you spent money improving the house. This is where the real money sits, and it is where nearly everyone under reports, because nobody keeps the receipt for a roof they replaced in 2021.

Adds to your basis: a new roof, an HVAC replacement, a pool, a casita or ADU, a room addition, a full kitchen or bath remodel, owned solar, new windows, permanent hardscape and landscaping.

Does not: repainting, swapping a failed water heater, HOA dues, pool service, or anything an insurance claim already paid for.

That $62,000 of improvements moved the seller from a $131,000 gain to a $69,000 gain. Neither number is taxable in this example. Change the purchase year to 2013 and the gap becomes real money.

What Arizona does differently

Arizona taxes capital gains as ordinary income at the state's 2.5% flat rate, then hands part of it back. Three state specific rules are worth knowing before you list.

There is no real estate transfer tax. A.R.S. 42-1103.02 bars the state and every county and city from imposing one. What you actually pay at the Maricopa County Recorder is a $2 affidavit of value fee. Sellers moving here from Washington or New York usually have to read that twice.

Arizona subtracts 25% of your net long term capital gain. A.R.S. 43-1022 allows a subtraction equal to 25% of the net long term capital gain included in your federal adjusted gross income, for assets acquired after December 31, 2011. The statute is blunt about proof: if the acquisition date cannot be verified, the subtraction is not allowed. That is one more reason to keep the closing package from the day you bought. Reporting runs through Arizona Form 140 and its schedules.

Community property gets a full basis step up. Arizona is a community property state. When one spouse dies, the entire home generally takes a new basis at the date of death value, not half of it. A widow in Sun City who sells two years later may show almost no gain. That single rule saves more Arizona sellers money than every deduction on this page combined, and plenty of surviving spouses have no idea it exists.

Selling before you hit two years

You can still get part of the exclusion. If the main reason for the sale is a work location change, a health issue, or an unforeseeable event, the IRS prorates the exclusion by the months you actually qualified.

Say you owned and lived in a North Scottsdale house for 12 months and took a job in Denver. Twelve months out of twenty four is half, so a married couple keeps $250,000 of exclusion instead of $500,000. For most Valley sellers that is still far more gain than they have.

The work test carries a distance rule: the new job has to be at least 50 miles farther from the old home than the old job was. Health reasons need a physician's recommendation, not just a preference. Unforeseeable events cover a death, a divorce, a job loss with unemployment benefits, or multiple births from a single pregnancy. Publication 523 has the worksheet that does the math.

Estimate your next payment

What this means for your next loan

Your net proceeds are the down payment on the next house, so the tax question and the loan question are the same question. Two things are worth planning around.

First, if you want to buy before you sell, you do not have to wait for the sale to fund. A bridge loan covers the gap, and in some files the ratios work well enough to simply carry both payments for a couple of months. Second, once the old house closes you can often apply the proceeds to the new loan and recast it, which drops the payment without a full refinance and without a new rate.

Before you list, know what the sale actually nets. Our breakdown of seller closing costs in Arizona covers the line items, and if you are still deciding whether to sell at all, the Phoenix housing market in August 2026 is the backdrop you are pricing into. When you are ready to shop for the next one, browse current listings at Arizona Luxury Property Search, and our loan programs page lays out what you can qualify for on the buy side.

Plenty of people run these numbers, decide the tax math does not justify moving, and refinance instead of listing. That is a real option, and the rules around pulling a listing before a refinance are specific enough to get wrong.

Honest caveat: this is not tax advice and I am not a CPA. Two situations wreck the clean answer above. If you ever rented the house out, the depreciation you claimed, or could have claimed, gets recaptured at up to 25% and the exclusion does not cover it. And any period after 2008 when the home was not your main residence counts as nonqualified use, which cuts the exclusion proportionally. If either applies, pay a CPA for an hour before you sign a listing agreement. It is the cheapest hour in the whole transaction. If you want the loan side handled at the same time, reach out to us directly.

Frequently asked questions

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

Most sellers do not. If you owned and lived in the home for at least 24 months out of the five years before the sale, you can exclude $250,000 of gain filing single or $500,000 married filing jointly. Anything above that is taxable, and Arizona then lets you subtract 25% of the net long term gain.

How long do I have to live in a house to avoid capital gains in Arizona?

Two years, and they do not have to be consecutive. You need 24 months of ownership and 24 months of use as your main home inside the five year window ending on the sale date. You also cannot claim the exclusion more than once every two years.

Does Arizona have a real estate transfer tax?

No. A.R.S. 42-1103.02 prohibits the state, counties, and cities from imposing a transfer tax on the sale of real property. The Maricopa County Recorder charges a $2 affidavit of value fee, and that is the whole of it.

What improvements reduce capital gains on a home sale?

Capital improvements add to your basis, which lowers your gain. A new roof, an HVAC system, a pool, a casita, a room addition, owned solar, and a full kitchen or bath remodel all count. Routine repairs, repainting, and HOA dues do not.

What happens if I sell before I have lived there two years?

You may still get a partial exclusion if the main reason for the sale is a work location change, a health issue, or an unforeseeable event. The IRS prorates it by the months you qualified, so 12 months out of 24 gives a married couple $250,000 instead of $500,000.