Move-Up Buyers and Capital Gains: Will You Owe Tax When You Sell Your Home in 2026?

When you sell your current home to move up, most families owe no federal capital gains tax at all, thanks to an IRS exclusion that lets married couples shield up to $500,000 of profit and single filers up to $250,000. But in the October 2026 market, the question matters more than it has in years: mortgage rates just hit 7.40%, their highest level since November 2023, homeowners sit on roughly $18 trillion of record equity, and industry data shows the share of sellers whose gains exceed the exclusion has roughly doubled since before the pandemic. This guide explains exactly how the home sale exclusion works, who actually owes tax, how your profit is calculated, and what the pending legislation to double the limits could mean for you.

I am Adam Heaney, a mortgage loan officer with 28 years in the business, helping families across California, Arizona, Colorado, Florida, Tennessee, Texas, and Washington move up to the home they have outgrown. Nearly four out of five homebuyers today are repeat owners, a record high, and for most of them the proceeds of the home they are selling become the down payment on the next one. The capital gains question comes up in nearly every move-up conversation I have, because your equity is usually the single largest asset you are carrying into the next purchase, and nobody wants a surprise tax bill to shrink it. My job is the same as always: explain the process in plain language, often with a video walkthrough you can watch on your own time, so you understand every number before you sign anything.

How the Home Sale Exclusion Works: The Numbers That Matter

The rule lives in Section 121 of the tax code, and it is one of the most generous provisions in the system. If you sell your primary home, you can exclude up to $250,000 of gain if you file single, or $500,000 of gain if you file jointly as a married couple. That is profit above what you paid and invested, not the sale price, so for the overwhelming majority of families the exclusion covers the entire gain and no federal tax is due.

Three requirements decide whether you qualify:

• The 2-of-5-year test. You must have owned the home for at least 24 months out of the 5 years ending on the sale date, and you must have lived in it as your principal residence for at least 24 months out of that same 5-year window. The two years do not have to be continuous, and the ownership and use periods do not have to be the same 24 months. For a married couple filing jointly, only one spouse needs to meet the ownership test, but both spouses must meet the use test.
• Once every two years. You can use the exclusion on only one home sale in the 2-year period ending on the sale date. Sell two homes within two years, and only the first gets the exclusion.
• It is for primary homes. The exclusion applies to your principal residence, not to investment properties or vacation homes. Those fall under different rules.

If you owned and lived in the home for less than two years, there is a partial exclusion, but only for specific reasons: a change in employment, a health issue, or an unforeseen circumstance such as divorce or a job relocation. Outside those situations, a short stay means you generally owe tax on the gain.

The October 2026 Market: Why This Question Keeps Coming Up

The last few weeks have pushed this topic to the top of the list for move-up families. The average 30-year fixed rate hit 7.40% for the week ending October 8, 2026, according to the Freddie Mac Primary Mortgage Market Survey, the highest reading since November 2023 and up from 6.30% a year earlier. Higher rates make the move-up decision more expensive, which means families want to know exactly how much of their home equity is actually theirs to use.

• Equity is at a record high. ICE’s Mortgage Monitor reported roughly $18 trillion in total mortgage-holder equity in the second quarter of 2026, with about $11.7 trillion of it considered tappable across roughly 47.5 million borrowers. Cotality put the average equity per mortgaged homeowner at about $310,000. The more equity you have, the more a surprise tax bill would sting, which is exactly why families are asking.
• Prices keep climbing. The National Association of Realtors reported a median existing-home price of $417,500 in September 2026, up 1.3% from a year earlier, with existing-home sales running at a 3.99 million annual pace and 4.8 months of supply. Steady appreciation means the gap between what families paid and what they will sell for keeps widening.
• Repeat buyers dominate. The National Association of Realtors’ most recent Profile of Home Buyers and Sellers found repeat buyers made up 79% of purchases, a record high, with first-time buyers at just 21%. Roughly 30% of repeat buyers paid all cash, and proceeds from the sale of a previous home are the most common down payment source among them. This is the move-up market, and the capital gains question is baked into it.

How Much Profit Are Sellers Actually Making?

It helps to see the real numbers before running your own. ATTOM’s home sales data found that sellers of median-priced single-family homes and condos realized gross profits of roughly $121,000 in 2023, a 56.5% return on their purchase price, and about $122,500 in 2024, a 53.8% return. Those are near-record median gains that have held around $120,000 or more for several years.

Here is the key context: a median gain of roughly $122,000 sits comfortably under the $250,000 single and $500,000 married exclusion limits, which is why most sellers owe nothing. But CoreLogic estimated that about 8% of home sales in 2023, roughly 230,000 transactions, produced gains above the exclusion and were therefore subject to federal capital gains tax. That is roughly double the pre-pandemic share of about 3% to 4% in 2017 through 2019. The trend is real: the longer families hold a home and the more prices appreciate, the closer more of them get to the line.

How Your Gain Is Actually Calculated: Basis, Improvements, and Selling Costs

Before you can know whether you owe anything, you have to calculate your gain correctly, and most families get this part wrong in their favor or against it. The formula is simple in shape:

Gain = amount realized minus adjusted basis.

Your adjusted basis starts with what you paid for the home, plus certain purchase closing costs, and then goes up by the cost of capital improvements. A new roof, a room addition, a kitchen remodel, a new HVAC system, those all raise your basis and therefore reduce your taxable gain. Ordinary repairs and maintenance, like fixing a leaky faucet or repainting, do not.

Your amount realized starts with the sale price and then goes down by the selling expenses directly connected to the sale: real estate commissions, advertising, legal fees, and title or escrow fees. The net effect is the same as adding them to your basis, they lower your taxable gain, so keep every receipt from both ends of the transaction.

This is where families unknowingly overpay: they forget the kitchen remodel they financed five years ago, or the new roof after the last storm, and they calculate their gain as if none of that money had ever been spent. Every dollar of documented improvement is a dollar of profit you do not owe tax on.

The Capital Gains Math on a Real Move-Up: A Hypothetical Family

Math is easier to trust when you can see it, so here is a teaching example. I am using current October 2026 market data, and I will say it plainly: this is a hypothetical illustration, not a promise about your situation. Your purchase price, your improvements, your selling costs, and your tax situation will all be different.

Meet the Chen family, a hypothetical married couple moving up in the suburbs. They bought their home in 2016 for $340,000. It is now worth about $620,000, in line with the steady appreciation we are seeing. Over the years they put in a new roof for about $15,000, remodeled the kitchen for about $25,000, and replaced the HVAC for about $8,000, roughly $48,000 of documented improvements. Selling costs, including commission and closing fees, run about 6% of the sale price, roughly $37,000.

Here is the math. Their amount realized is $620,000 minus $37,000 in selling costs, or about $583,000. Their adjusted basis is $340,000 plus $48,000 in improvements, or about $388,000. Their taxable gain is $583,000 minus $388,000, or roughly $195,000. As a married couple filing jointly, they can exclude up to $500,000, so their entire gain is sheltered and they owe no federal capital gains tax. That $195,000 is theirs to carry into the next home.

Now meet the Rosales family, a hypothetical couple who have owned their home much longer. They bought in 1998 for $250,000, and their home in a high-appreciation market is now worth $1,200,000. After $80,000 in documented improvements and roughly $72,000 in selling costs, their amount realized is about $1,128,000 and their adjusted basis is about $330,000, for a gain of roughly $798,000. After the $500,000 exclusion, about $298,000 of gain is taxable. At the 15% long-term capital gains rate that is roughly $44,700, and for higher-income filers the 3.8% net investment income tax can add thousands more on top. This is the 8% of sellers CoreLogic is talking about.

The lesson is not that selling is a bad idea. It is that the two families have completely different tax realities despite both moving up, and the difference is driven by how long they owned the home, how much it appreciated, and how well they documented their improvements. Knowing which family you are, before you price the home, changes how you plan the whole transition.

What About the Proposed Changes? The Bill That Could Double the Exclusion

There is a bill moving through Congress that could change this picture substantially, and move-up families should know it exists even though, as of October 2026, it has not passed. The More Homes on the Market Act, introduced in the House as H.R. 1340 and in the Senate as S. 3332, would double the exclusion to $500,000 for single filers and $1,000,000 for married couples filing jointly, and add an annual inflation adjustment after that. A separate proposal, the No Tax on Home Sales Act, would eliminate the dollar caps entirely.

Why the pressure? The limits were set in 1997 and have never been indexed for inflation. The Congressional Research Service has noted that if the caps had simply kept pace with home price growth, they would be roughly $715,000 to $720,000 for single filers and about $1.44 million for married couples today. That gap between the frozen limits and real-world appreciation is exactly why the share of sellers owing tax has doubled since before the pandemic.

Here is my honest guidance: plan your move based on the law as it is today, not the law that might pass tomorrow. Legislation of this kind is rarely retroactive in the way families hope, and waiting on the sidelines for a tax bill is a costly bet in a market like this one. If the limits are raised, that is a pleasant surprise. If they are not, you have already made the decision with the real numbers in hand.

What Move-Up Families Can Do Right Now

You do not need to be a tax expert to get this right. You need a system and a good professional. Here is where to start:

• Build your improvement log today. Dig up the receipts for the roof, the kitchen, the bathroom, the HVAC, the windows, the finished basement, every capital improvement since you moved in. Scan them and keep a running list. Families who do this before listing almost always find their basis is higher than they thought.
• Get a realistic value, not a hopeful one. Your gain depends on your sale price, so work with your agent on a defensible estimate. The September 2026 median of $417,500 is a useful national anchor, but your local market sets your number.
• Estimate your exclusion in advance. The math is simple: sale price minus selling costs, minus your original cost plus improvements, equals your gain. Compare that to $250,000 or $500,000, and you will know which side of the line you are on.
• Remember the once-every-two-years rule. If you used the exclusion on a home sale in the last two years, you cannot use it again yet. Know your history before you plan your move.
• Talk to a tax professional. I am a loan officer, not an accountant, and the line between federal, state, and local treatment of home sale gain is exactly where a professional earns their fee. Bring them your numbers alongside the mortgage conversation, not after it.

One note on states: the federal exclusion is the baseline, and most states follow the federal rules for primary homes, but treatment can differ, so confirm your state’s rules with your tax professional. For families in California, Arizona, Colorado, Florida, Tennessee, Texas, and Washington, I can walk you through the mortgage side of the move while your tax advisor handles the sale side, and the two conversations fit together cleanly.

Common Questions From Move-Up Families

Do I owe tax if I roll my profit into a bigger home? No, and this is the most common misunderstanding I hear. The old rule that let you defer tax by rolling your gain into a new home was replaced in 1997 by the exclusion we have today. There is no rollover requirement anymore. You simply exclude up to $250,000 or $500,000 of gain on your primary home, whether you buy a bigger home, a smaller one, or rent afterward.

What if I have not lived there for two full years? You may still get a partial exclusion, but only if the reason is a job change, a health issue, or an unforeseen circumstance like divorce or relocation. Otherwise, a short stay means the gain is generally taxable. If you are close to the two-year mark, the timing of your listing can matter a great deal.

Does my equity count against the exclusion? No. Equity is the difference between your home’s value and what you owe, while the exclusion applies to your taxable gain, which is profit above your cost and improvements. A family can have $400,000 of equity and owe zero tax if their gain is under the limit, or far less equity and still owe tax if they bought decades ago in a fast-appreciating market.

Will the doubled limits pass before I sell? As of mid-October 2026, the More Homes on the Market Act has been introduced but not enacted, and the existing limits remain $250,000 and $500,000. Plan around the current law, and let any future change be a bonus rather than a reason to gamble with your timeline.

How does this fit with bridge financing or a contingent offer? The capital gains question sits on the sale side, and your financing strategy sits on the purchase side, but they are two halves of the same plan. When you know your after-tax equity, you know your real down payment, which tells you whether a bridge loan, a HELOC, a contingent offer, or selling first makes sense. That is why I always start with your numbers on both sides.

The Bottom Line

The home sale exclusion is one of the most valuable tools most families will ever use, and in the October 2026 market it deserves a closer look. With the 30-year rate at 7.40%, record equity of roughly $18 trillion, a median home price of $417,500, and the share of sellers exceeding the exclusion roughly doubling since before the pandemic, move-up families should know exactly where their gain falls before they price their home. The good news is that most families owe nothing, and the families who do owe can often shrink the bill with nothing more than good record keeping and careful timing.

That is the conversation I love to have, and it starts with your numbers, not a brochure. Tell me what your current home is worth, what you owe, and what you are hoping to move into, and I will help you map out how much of your equity is truly yours to use, then show you the financing paths, a bridge loan, a HELOC, a contingent offer, or selling first, that make the transition work. I will record a personalized video walkthrough your whole family can watch together. No jargon, no pressure, just the real numbers on your situation, the same way I have helped families across California, Arizona, Colorado, Florida, Tennessee, Texas, and Washington for 28 years.

Author: Adam Heaney, Loan Officer, NMLS #283076, Emery Financial