The ACA Subsidy Cliff When You Sell Property Before 65

This is one of the costs that never shows up on the tax estimate for a sale. The Beyond the tax bill guide covers the others (IRMAA, the SALT cap, Social Security taxation, AMT).

Where does the ACA subsidy stand in 2026?

The enhanced credits from the 2021 and 2022 laws, which let people above 400% of the poverty line qualify, expired after 2025. The statute still reads "Temporary percentages for 2021 through 2025" (IRC §36B(b)(3)(A)(iii)), and no enacted law has extended them.

The House did pass a three-year extension: H.R. 1834 passed 230 to 196 on January 8, 2026. It was placed on the Senate calendar on February 10, 2026 and has had no further action. As of September 2026, plan on no credit above 400% of the poverty line in 2026 and 2027.

Three other changes matter for a seller:

• Higher contribution percentages. For 2026 you are expected to pay 2.10% to 9.96% of household income toward the benchmark silver plan (Rev. Proc. 2025-25). For 2027 the range is 2.15% to 10.22% (Rev. Proc. 2026-26).
• Full repayment. The old cap on paying back excess advance credits is gone for tax years after 2025 (P.L. 119-21 §71305, noted in Rev. Proc. 2025-32 §2.04). §36B(f)(2) now says your tax "shall be increased by the amount of such excess." If a sale puts you over the cliff, every dollar of advance credit you took that year comes back on your return.
• The state backstop is narrow. Covered California's state subsidy covers 100% to 165% of the poverty line (2026 FPL chart). It does not help a seller above that.

Where exactly is the 400% line?

Coverage in 2026 is measured against the 2025 federal poverty guidelines (HHS): $15,650 for one person plus $5,500 for each additional person. Coverage in 2027 uses the 2026 guidelines: $15,960 plus $5,680.

Alaska and Hawaii use higher guidelines: for 2026 coverage, 400% is $78,200 (Alaska) and $71,960 (Hawaii) for one person, $105,720 and $97,280 for a couple.

What income counts toward the cliff?

Household income for the credit is modified AGI: your AGI plus tax-exempt interest, plus Social Security benefits that are not taxable, plus excluded foreign income (§36B(d)(2)(B)). For a seller that means:

• The capital gain counts in the year it is recognized.
• On an installment sale, both the gain portion and the interest of each payment count.
• Investment income from the proceeds counts. Moving the money into municipal bonds does not help: tax-exempt interest is added back.

How big is the cliff in dollars?

Illustrative: a married couple, both under 65, benchmark silver premium of $26,000 a year, 2026 coverage (engine estimate).

One dollar of income is worth $17,574 at the line. Between 300% and 400%, each extra dollar costs about 10 cents of credit (the flat 9.96% rate). Above it, the whole credit is gone.

Does spreading the sale save the credit?

Usually not, and it is worth being plain about that.

Worked example (engine estimate): a California couple, both under 65, sells a rental for $900,000 in 2026. Basis $300,000, about $54,000 of selling costs, $55,000 of other income, marketplace coverage 2026 through 2029 with a $26,000 benchmark premium. Both paths earn 5% on money at work, and that yield counts as income.

The cash seller is over the line even after the sale year: 5% on the invested proceeds plus $55,000 of other income is 426% of the 2027 line. The spread seller's payments (gain plus interest) keep the couple above it every year too. Same credit lost: $84,687 on both paths. (2028 and 2029 use the 2027 table carried forward.)

The spread still cuts the tax on the gain itself, from about $130,900 in 2026 to about $19,900 over 15 years; interest on the payments is taxed as it arrives, just as the cash seller's investment income is. So the spread can be the better tax answer and still do nothing for the credit. See the high-income structured installment sale page for how the tax side works.

When can sizing the payments help?

Only when the annual payment fits under the line. The same couple with $40,000 of other income, 15-year spread, same 5% assumptions (engine estimate, credit lost 2026 to 2029):

At $400,000 the spread keeps every year under 400% and saves about $12,000 of credit. At $500,000 the first year lands just over the line, the 2026 credit is lost anyway, and the extra income in later years shaves the credit further: the spread costs more credit than the cash sale. The difference between those two rows is the whole lesson: size each year's income against the line, not against a rule of thumb. Run your own numbers in the demo calculator; it has a "Beyond the tax bill" slide that shows the credit year by year.

What actually protects the credit?

1. Close in a year with no marketplace months. The credit is the sum of monthly amounts for "coverage months" (§36B(b)(1)), and a month does not count once you are eligible for Medicare (§36B(c)(2)(B)). But every marketplace month in a year is priced against that whole year's income. If you turn 65 in July and close in October, January through June are still measured against the sale. The clean version is closing in the first calendar year you have no marketplace months at all, or in a year before you enroll (while still on employer coverage).

2. Watch what that timing does to Medicare. A sale in your first Medicare year raises your IRMAA surcharge two years later. Compare the two before picking a closing date: see IRMAA after a property sale.

3. Couples with an age gap. If one spouse moves to Medicare and the other stays on the marketplace, the younger spouse's credit is still measured on joint household income.

4. Report the sale to the marketplace. HealthCare.gov says to "update your application as soon as possible" when income changes, because otherwise "you'll have to pay the difference back" at filing (reporting changes). With repayment now uncapped, lowering or stopping the advance credit once the sale is certain avoids a surprise bill in April.

5. Size the installments. As the table above shows, this works only when the yearly gain plus interest plus other income stays under the line.

What should you know about a structured installment sale here?

A structured installment sale spreads the gain over the years you choose, with payments funded by an annuity from a highly rated life insurer through an assignment company. See what a structured installment sale is. What to know: the schedule is locked once set; payments depend on the assignment company and the insurer behind it; there is no published IRS ruling on this specific assignment structure, so have your CPA review it; and a commission is built into the pricing.

Frequently asked

Q: Did Congress extend the enhanced ACA subsidies for 2026? A: No. H.R. 1834 passed the House 230 to 196 on January 8, 2026 but has had no Senate action. In 2026 there is no credit above 400% of the poverty line.

Q: Does a one-time capital gain really count for the premium tax credit? A: Yes. It is part of AGI, and household income for the credit is modified AGI for the whole tax year.

Q: What happens if I got advance credits and then sold? A: From 2026 you repay the full excess on your return. The old repayment caps were repealed by P.L. 119-21 §71305.

Q: Will municipal bonds keep my income under the cliff? A: No. Tax-exempt interest is added back to modified AGI for the credit.

Q: If I turn 65 during the year, does the sale still matter? A: For the months before Medicare eligibility, yes. Those months are priced against the full year's income, sale included.

Q: Does an installment sale always protect the subsidy? A: No. In the $900,000 example above the spread and the cash sale lose the same $84,687. It helps only when each year's income fits under the line.

What should you read or run next?

• Beyond the tax bill: the costs a sale triggers
• IRMAA after a property sale
• Social Security taxes after a property sale
• Net investment income tax
• Structured installment sale guide
• Capital gains exit calculator

Illustrative estimates using 2026 law. Not tax, legal or accounting advice. Figures change each year; have your CPA confirm with your own return.

Who wrote this?