The ACA subsidy cliff is back for 2027, and if you buy your own health insurance, a few hundred dollars of extra income could now cost you thousands in lost premium help. Open enrollment on HealthCare.gov starts November 1, so this is the moment to run your numbers before you pick a plan.
This guide explains how the cliff works, who actually needs to worry, and the practical moves that can keep your income on the right side of the line.
What the ACA Subsidy Cliff Means in 2027
From 2021 through 2025, temporary rules let people above 400% of the federal poverty level (FPL) still get a premium tax credit. Those enhanced credits expired at the end of 2025, and Congress has not renewed them for 2027.
That brings back the original rule: if your household income is above 400% FPL, you get no premium tax credit at all. There is no gradual phase-out. One dollar over the line and the credit drops to zero.
For 2027 coverage, the Marketplace uses the 2026 poverty guidelines. Here is where the line falls in the 48 contiguous states:
| Household size | 100% FPL (2026 guidelines) | 400% FPL cliff |
|---|---|---|
| 1 | $15,960 | $63,840 |
| 2 | $21,640 | $86,560 |
| 4 | $33,000 | $132,000 |
Alaska and Hawaii use higher guidelines, so their cliff amounts are higher.
How Much You Pay Below the Line
Below 400% FPL, the IRS caps what you pay for the benchmark silver plan as a share of your income. Rev. Proc. 2026-26 sets the 2027 scale:
| Income (% of FPL) | Your expected contribution |
|---|---|
| Under 133% | 2.15% of income |
| 133% to 150% | 3.23% to 4.3% |
| 150% to 200% | 4.3% to 6.78% |
| 200% to 250% | 6.78% to 8.66% |
| 250% to 300% | 8.66% to 10.22% |
| 300% to 400% | 10.22% |
Your credit is the difference between the benchmark silver premium in your area and that expected contribution. The older you are and the pricier your local market, the bigger that difference gets, which is also why the ACA subsidy cliff hits older enrollees hardest.
A Real-Number Example
Meet Dana, 58, single, a freelance bookkeeper. To keep the math simple, assume her benchmark silver plan costs $1,200 a month, or $14,400 a year. Actual premiums vary by ZIP code and age, so check your own quote on HealthCare.gov.
Scenario A: Dana’s 2027 income is $62,000. That is about 388% FPL, so she is expected to pay 10.22% of income, or $6,336 a year. Her premium tax credit is $14,400 minus $6,336, which is $8,064.
Scenario B: Dana lands one extra client and earns $64,500. She is now over $63,840. Her credit is $0, and she pays the full $14,400.
A $2,500 raise just cost Dana roughly $8,000 in premium help. That is the ACA subsidy cliff in one picture.
Now the fix. If Dana puts $3,000 into a deductible traditional IRA or a SEP-IRA, her income can drop back to about $61,500. She keeps the credit and builds retirement savings at the same time.
For a healthy 27-year-old in a cheaper market, the gap may be only a few hundred dollars a year. Same rule, very different stakes, so run the ACA subsidy cliff math with your own quote.
Who This Is For / Who Can Skip It
Not everyone needs to plan around the ACA subsidy cliff. Use these checks to decide.
Pay close attention if you:
- Buy your own coverage on HealthCare.gov or a state Marketplace
- Are self-employed, a gig worker, or retired early
- Are in your 50s or early 60s, when premiums run highest
- Expect income within about $10,000 of your cliff amount
You can mostly skip this if you:
- Have job-based coverage that passes the affordability test (self-only premium of 10.22% of household income or less for 2027 plans)
- Earn well under 300% FPL, where you are nowhere near the line
- Qualify for Medicaid or are 65 and moving to Medicare
5 Ways to Stay Under the ACA Subsidy Cliff
The number that matters is your modified adjusted gross income (MAGI). For Marketplace purposes, it is roughly your adjusted gross income plus any untaxed Social Security, tax-exempt interest, and excluded foreign income.
- Max out pre-tax retirement contributions. Traditional 401(k), 403(b), SEP-IRA, Solo 401(k), and deductible traditional IRA contributions all lower MAGI. The 2026 IRA limit is $7,500.
- Pick an HSA-eligible plan. Bronze and catastrophic Marketplace plans count as HSA-compatible, and HSA contributions reduce MAGI. Our HSA contribution limits for 2027 guide has the numbers.
- Time freelance income and expenses. If you are self-employed, a large invoice paid in January instead of December, or a needed equipment purchase in December, can shift your income between years.
- Be careful with Roth conversions and capital gains. Both raise MAGI. Early retirees often hold off until they are on Medicare.
- Update your application during the year. If your income changes, report it so your advance credit matches reality.
Why Accurate Estimates Matter More Now
Starting with 2026 coverage, there is no longer a cap on how much excess advance credit you repay at tax time. If you estimate $60,000 and end the year at $65,000, you could owe back the entire credit when you file.
That makes the ACA subsidy cliff a tax-season problem as well as an enrollment one. Estimate conservatively, track income each quarter, and adjust early.
Key 2027 Open Enrollment Dates
| Date | What happens |
|---|---|
| November 1, 2026 | Open enrollment begins |
| December 15, 2026 | Enroll by today for coverage starting January 1 |
| January 15, 2027 | Open enrollment ends on HealthCare.gov |
| February 1, 2027 | Coverage starts for December 16 to January 15 sign-ups |
Some state Marketplaces run later deadlines, so check your state’s exchange. The official calendar is on HealthCare.gov’s dates and deadlines page.
FAQ
What is the ACA subsidy cliff for a single person in 2027?
For 2027 coverage, it is $63,840 of household income in the 48 contiguous states. Above that, you do not qualify for a premium tax credit.
Can I lower my income after the year ends?
Partly. Traditional IRA and HSA contributions for a tax year can usually be made until the April filing deadline, and they still reduce that year’s MAGI. Most other moves have to happen by December 31.
What if I go over the line by accident?
You will reconcile on Form 8962 when you file, and you may have to repay the advance credit you received. Reporting income changes during the year helps you avoid a large bill.
This article is for general educational purposes and is not tax, legal, or insurance advice. Rules, premiums, and limits change, so confirm details with HealthCare.gov, the IRS, or a qualified tax professional before making decisions.