For Sale By Owner · Big Gain · 2026

Selling Your House By Owner With a Big Gain

Selling a long-held home by owner and the gain is far past the $250,000 or $500,000 exclusion? The time to decide how to be paid is before you sign the purchase agreement, not after.

By Hans Goldstein, EA · Updated October 15, 2026

Step by step: how to sell your house by owner when the gain is big and keep more of it

The answer

Find your basis, see how much of the gain the $250,000 or $500,000 home exclusion leaves taxable, and run the tax comparison before you list or accept the first offer. If the gain is large, decide on a payout arrangement now and put it in the purchase agreement before closing, because no agent or advisor will bring it up for you.

On a $2,200,000 California home sold by owner in 2026, the tax was $404,183 in a cash sale and $36,707 on the gain when the same sale was paid out over 10 years. The buyer pays in full at closing either way, and you are not the bank.

Jump to: Steps · Documents · Who to call · Options · Worked example · Mistakes · All step-by-step guides

The steps, in order

  1. Before you list
    Find your basis. Basis is what you paid plus the improvements: additions, a new roof, a remodel, a pool. Pull the old closing statement, receipts and county records. Do not guess. On a home held for decades, basis decides the whole tax bill, and owners often forget thousands in improvements.
  2. Before you list
    See what the home exclusion leaves taxable. You can exclude up to $250,000 of gain if single and $500,000 on a joint return, if you owned and lived in the home at least 2 of the last 5 years (IRC §121). Subtract your selling costs, your basis and the exclusion from the price. What is left is taxable. Years as a rental or a home office can change this, so check the dates.
  3. Before you list
    Add state tax. Most states tax the gain as ordinary income. California has no separate capital gains rate, so the gain is taxed at your regular California rate. Add the federal capital gain tax, and the 3.8% net investment income tax if your income is high enough (IRC §1411).
  4. Week 1 to 2
    Price it with an appraisal or a broker opinion. Do not price off an online estimate. Pay a licensed appraiser, or ask a local agent for a broker opinion of value. A flat-fee MLS listing gets a by-owner sale in front of buyers and their agents for a fixed charge. Remember the buyer's agent commission and title and escrow costs come out of the price, so run the net, not the headline.
  5. Before you list or accept the first offer
    Run the tax comparison. Put a cash sale next to a sale where the gain is paid out over years. This takes an hour with the numbers in hand and it is free on our calculators. Do it now, while there is no purchase agreement and every option is still open.
  6. Before the first offer
    Decide whether a payout arrangement fits. In an installment sale through a structured arrangement the buyer pays the full price at closing, the money goes to an assignment company, and an annuity pays you on the schedule you pick. You are not carrying a note and you do not depend on the buyer. No seller carryback of any kind. It fits a big gain and an owner who does not need all the cash now. It does not fit a short life expectancy or a need for the whole amount at closing.
  7. When you accept an offer
    Put it in the purchase agreement. A real estate attorney or the escrow officer drafts a one-paragraph addendum. It costs the buyer nothing. Buyer financing is normal and is unaffected. It must be signed before closing. If the buyer's agent or escrow drafts the contract without it, ask them to add it before you sign.
  8. Listing to contract, 2 to 6 weeks
    Market, show and disclose. Photos, showings, the seller disclosure your state requires, and a clear offer deadline. A Coming Soon listing lets buyers see the home before it goes on the open market. The payout language can go in the first contract you sign, so tell your attorney or escrow before you do.
  9. Contract to close, about 30 to 45 days
    Hold the structure steady through escrow. The addendum, the assignment and the funding instructions are all signed before the closing date. Once the sale money lands in your bank account, it is a cash sale and a payout arrangement is no longer possible for this sale.
  10. After closing
    Report the sale. Keep the closing statement. File Form 8949 and Schedule D, and Form 6252 for an installment sale. Hans Goldstein, EA, an enrolled agent admitted to practice before the IRS (not a CPA or attorney), can run the numbers, and your CPA can file the return.
Want your real number before step 1 ends? Send the sale price and rough basis and I will email the actual tax figure, or talk to me now. The first 15-minute scope call is free; a written analysis is $5,000.
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Documents to gather

  • Photo ID and the deed
  • The original closing statement from when you bought the home
  • Receipts and records for improvements (roof, additions, kitchen, bath, pool)
  • Property tax bill, mortgage payoff statement and homeowners insurance declarations
  • Your last two tax returns, so the numbers use your real income
  • An appraisal or broker opinion of value
  • Your state seller disclosure forms and any HOA documents
  • Name and contact for the real estate attorney or escrow officer who will draft the purchase agreement

Who to call, in what order

  1. Your CPA or enrolled agent. First. Basis, the §121 exclusion, state tax and the comparison. Hans Goldstein, EA can run the numbers.
  2. A real estate attorney or escrow officer. Before the first offer. They draft the purchase agreement and the one-paragraph addendum.
  3. A local appraiser or broker. Price opinion before you list. A flat-fee MLS service gets you onto the market.
  4. Title or escrow company. Opens escrow when you accept an offer and coordinates the closing and funding.
  5. A scope call with Hans. Free, 15 minutes, before you accept an offer. A written analysis is $5,000.
  6. A financial planner. After the numbers, to plan how the payments fit your retirement income.

Your options compared

OptionIt works whenIt fails when
Sell by owner for cashGain is under the exclusion, or you need all the money now.A big gain is taxed in one year and lands in a high bracket. You also handle pricing and paperwork yourself.
Hire an agent and sell for cashYou want help with pricing, showings and negotiation.Same tax result as a cash sale. An agent does not usually raise the payout structure, so ask your tax pro.
Coming Soon pre-marketingYou want buyers to see the home early and test the price.It is a marketing choice, not a tax choice. The tax comparison still has to happen first.
Installment sale through a structured arrangementA large gain over the exclusion and you do not need all the cash at once. Buyer pays in full at closing.Short life expectancy, or a need for all the cash now. Payments cannot be sped up. Must be in the contract before closing.
1031 exchange into other propertyInvestment property only, and you want more real estate.It does not apply to your personal home, only property held for investment or business.
Seller carries a note (traditional installment sale)You are willing to be the lender and trust the buyer.Most sellers do not want to be the bank. You depend on the buyer paying and carry the risk of default.

Taxes differ by state and by year. Compare with the numbers for your own sale.

A worked example

A married California couple, home bought in 1989. Basis with improvements is $380,000. They sell by owner in 2026 for $2,200,000 with 4% costs ($88,000: buyer agent commission, title and escrow). They take the $500,000 exclusion. Other income is $110,000 a year. Run October 15, 2026 with the Goldstein & Co. engine: 2026 federal and California brackets, and a 5.0% payout rate assumption.

Cash sale, all in 2026Paid over 10 yearsPaid over 5 years
Taxable gain after the $500,000 exclusion$1,232,000$1,232,000$1,232,000
Tax on the gain$404,183 (32.8%)$36,707, plus $220,424 on the interest$179,160, plus $119,135 on the interest
Net after tax and costs, cash sale$1,707,817Not applicableNot applicable
Cash each yearWhat you withdraw$273,514 a year$487,819 a year
After-tax money at the end, if untouched$2,452,476 at year 10; $2,056,061 at year 5$2,608,760 at year 10 ($156,285 more)$2,154,882 at year 5 ($98,821 more)

The 5.0% payout rate is an assumption, not a quote, and the table assumes nothing is spent. These are estimates. If the owner dies before the last payment, the unpaid gain is income in respect of a decedent (IRC §691(a)(4)) and heirs pay the tax with no step-up on that part. A short life expectancy is the reason to run keeping the house next to it, because heirs get a step-up in basis at death (IRC §1014).

Mistakes that close the door

  • Signing the purchase agreement first. The payout arrangement has to be in the contract before closing. Once you sign without it, the buyer has no reason to reopen the deal.
  • Already closed, or taking the check. When the money has landed in your account, it is a cash sale. The option is gone for this sale.
  • Letting the buyer's agent or escrow draft the contract without the addendum. They use their standard form. Hand your attorney the one-paragraph addendum first.
  • Assuming the exclusion covers everything. The exclusion is $250,000 or $500,000. On a home held for decades, the gain is often far more.
  • Pricing off an online estimate. Online value tools can miss by a lot. Use an appraisal or a broker opinion of value.
  • No basis records. Without receipts, you may overpay the tax. Start digging out closing papers and improvement records before you list.

Run your own numbers: sell for less, net more calculator; structured sale calculator; seller net sheet after tax; home sale gain over the exclusion. More problems like this one: forced to sell? step-by-step guides.

Sources, checked October 15, 2026: IRC §121, home sale exclusion; IRC §453, installment method; IRC §691, income in respect of a decedent; IRC §1014, basis of property acquired from a decedent; IRC §1411, net investment income tax.

When this does not fit

If your gain is under the exclusion, there is no tax to spread and a cash sale is fine. If you need every dollar at closing, or your life expectancy is short, a payout over years may not help, and keeping the house for the step-up in basis may beat selling. If the home is an investment property, a 1031 exchange may apply. The first 15-minute scope call with Hans Goldstein, EA is free; a written analysis is $5,000. Estimates only, not a promise of savings.

Before you read further

What is the tax bill on your property sale going to be?

Send me the sale price and rough basis. Within one business day I'll email you the actual number and the Seller's Guide to §453. If it doesn't fit your deal, I'll tell you that plainly.

Hans Goldstein, EA
Admitted to practice before the IRS

No retainer · no obligation. Hans Goldstein, a licensed insurance agent (CA Insurance License #4273294), will contact you and may discuss insurance products, including annuities.

Frequently asked questions

How do I avoid capital gains tax when selling my house by owner?

You cannot avoid it completely, but you can reduce it. The home exclusion removes up to $250,000 of gain if single and $500,000 if married filing jointly (IRC §121). For the rest, you can be paid over years through an installment sale through a structured arrangement, so the gain is taxed as payments arrive.

Can I use an installment sale when I sell my house for sale by owner?

Yes, if it is written into the purchase agreement before closing. The buyer pays in full at closing, the money goes to an assignment company, and an annuity pays you. You are not the bank. Ask a real estate attorney or escrow officer to add a one-paragraph addendum.

Do I need a real estate agent to sell my house by owner?

No. You can use a flat-fee MLS service, an appraisal and a real estate attorney or escrow officer. The buyer will usually bring an agent, and you pay that commission out of the price. Check the tax first, because that is where the big money is.

What is a Coming Soon listing and does it change my taxes?

It is a pre-market listing that shows buyers a home before it goes live. It does not change the tax. The tax comparison still has to happen before you accept an offer.

How much tax will I pay if I sell my home for $2 million?

It depends on your basis, your state and your other income. In one 2026 California example, a $2,200,000 sale with $380,000 basis and a $500,000 exclusion left a $1,232,000 gain and an estimated $404,183 tax as a cash sale. Run your own numbers on the calculator.

What is my basis if I bought my house in 1989?

Basis is the purchase price plus the cost of improvements. Find the original closing statement, county records and receipts. A higher basis means a smaller taxable gain.

When must the payout language be in the contract?

Before closing. The addendum, the assignment and the funding instructions are signed before the closing date. After the sale money is in your account, it is a cash sale.

Does a payout arrangement cost the buyer anything?

No. The buyer pays the full price at closing as usual, and buyer financing is unaffected. The one-paragraph addendum costs the buyer nothing.

What if I might not live 10 more years?

Then run it carefully. If you die before the last payment, the unpaid gain is income in respect of a decedent (IRC §691(a)(4)). Heirs get a step-up in basis on a house you keep (IRC §1014), so compare keeping it too.

What does a real analysis cost?

The first 15-minute scope call is free. A written analysis is $5,000. The calculators and this page are free.

Can I do a 1031 exchange on my personal home?

No. A 1031 exchange applies only to property held for investment or business, not your personal home.

Sources and dates

Who wrote this?

About the author

Hans Goldstein, EA, works with sellers on IRC §453 installment sales. He is admitted to practice before the IRS. Tax and exit-planning analysis: Hans Goldstein: Tax & Exit Planning. Annuity placement for structured installment sales: Goldstein & Co. LLC dba Goldstein Insurance Services, CA ins. lic. #4273294. Hans is not a CPA or attorney, and this page is education, not tax or legal advice; have your CPA and attorney review your facts. A commission is paid only if a structured installment sale is funded.

Talk to Hans: hans@goldsteinco.net · 213-414-2808

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Hans Goldstein, EA
Hans Goldstein, EAAdmitted to practice before the IRS

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This is an estimate. Getting it right down to the tee takes your actual tax forms (returns, K-1s, depreciation schedules), a consult and a paid analysis. The first 15-minute scope call is free; the written analysis is $5,000. On a funded structure the insurer pays a one-time commission to the brokerage firm that places it; it is built into the annuity pricing, not a separate fee.

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