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ACA subsidy calculator 2027: how much is my premium tax credit?

Direct answer: For 2027 coverage, the premium tax credit limits what you pay for the benchmark silver plan to 2.15% to 10.22% of household income. It's only for incomes from 100% to 400% of the poverty line, or $15,960 to $63,840 for one person. Above that there's no credit at all.

By the numbers: The 2027 range of 2.15% to 10.22% of income is up from 2.10% to 9.96% in 2026, and job-based coverage counts as affordable in 2027 if the employee's self-only share is no more than 10.22% of household income. Source: IRS Rev. Proc. 2026-26 and Rev. Proc. 2025-25

“There is no repayment cap for tax years after 2025.” — IRS Questions and answers on the Premium Tax Credit, Q31

Updated 2026-10-17

Quick Q&A
How is the ACA premium tax credit calculated?

Take the monthly premium of the second lowest cost silver plan for your household and subtract your expected share: household income times the IRS applicable percentage, divided by 12. The credit can't be more than the premium of the plan you pick (26 CFR 1.36B-3).

What is the income limit for ACA subsidies in 2027?

400% of the poverty line: $63,840 for one person, $86,560 for two, $109,280 for three and $132,000 for four in the 48 states and DC, using the 2026 HHS guidelines. Alaska and Hawaii are higher.

What percentage of income will I pay for a Marketplace plan in 2027?

For the benchmark silver plan, 2.15% of income below 133% of the poverty line, rising to 10.22% from 300% to 400% (IRS Rev. Proc. 2026-26). Over 400% there is no credit.

What happens if I earn $1 over 400% of the poverty line?

You lose the whole premium tax credit for the year and must repay any advance credit paid to your insurer, with no repayment cap for tax years after 2025 (IRS FAQ Q31).

Which year's poverty guidelines are used for 2027 coverage?

The 2026 HHS guidelines, the ones in effect when open enrollment starts on Nov. 1, 2026 (26 CFR 1.36B-1(h)). The IRS gives the same rule: the 2025 credit used the 2024 guidelines.

Can I get a premium tax credit if my income is below the poverty line?

Generally no. In states that didn't expand Medicaid, adults below 100% who don't qualify for Medicaid fall into a coverage gap (HealthCare.gov). If the Marketplace estimated at least 100% when you enrolled, you keep advance credits even if income ends up lower.

Is my job's health plan affordable for 2027?

For plan years starting in 2027, job coverage is affordable if your share of the cheapest self-only plan that meets minimum value is no more than 10.22% of household income (9.96% in 2026). If it's affordable, you can't get the credit.

As of Oct. 17, 2026

Best move: estimate income carefully and watch the 400% line

Estimate your 2027 income carefully, and update the Marketplace when it changes. Starting with 2026 there's no cap on paying back extra advance credit, and income even $1 over 400% of the poverty line ends the credit for the whole year. If you're close to the line, check what counts in household income (modified AGI) before you enroll.

The math:

  • One person, $40,000 in 2027: 250% of the poverty line → 8.66% → $289/month max for the benchmark plan. With a $700 benchmark (example price), the credit is $411/month.
  • Family of four at exactly $132,000 (400%): 10.22% → $13,490 a year ($1,124/month) max for the benchmark. At $132,001: no credit at all.
  • Took $411/month in advance on a $40,000 estimate but earned $50,000: credit $274/month → repay $1,644. Earned $70,000 (over 400%): repay all $4,932.
  • IRS check: the regulation's own examples (275% → 8.78%, 210% → 6.65%) and Form 8962's rounding examples (0.9984 → 99, 1.8565 → 185) give the same results on this page.

Sources: IRS Rev. Proc. 2026-26 · IRS PTC FAQs · Form 8962 instructions

A best fit for the situation described, not financial advice or a buy/sell recommendation. Partner links never change a pick.

Your roadmap

  1. Estimate household income: you, your spouse if filing jointly, and dependents who must file. Start from AGI and add tax-exempt interest and non-taxable Social Security.
  2. Preview 2027 plans on HealthCare.gov (or your state's site) to see the benchmark silver premium for your ZIP and ages.
  3. Run the calculator and check how far you are from the 400% line.
  4. Choose how much advance credit to take. Taking less now means a smaller bill (or a refund) at tax time if your income rises.
  5. Report changes (raise, new job, marriage, baby) to the Marketplace as they happen. Enroll by Dec. 15 for Jan. 1 coverage.

What share of income you pay: 2026 vs 2027

Household income (% of poverty line)20262027
Less than 133%2.10%2.15%
133% to under 150%3.14% → 4.19%3.23% → 4.30%
150% to under 200%4.19% → 6.60%4.30% → 6.78%
200% to under 250%6.60% → 8.44%6.78% → 8.66%
250% to under 300%8.44% → 9.96%8.66% → 10.22%
300% to 400%9.96%10.22%
Over 400%No creditNo credit

Within a band the percentage rises in a straight line and is rounded to the nearest 0.01%. Sources: IRS Rev. Proc. 2026-26 · IRS Rev. Proc. 2025-25 · 26 CFR 1.36B-3. The same 10.22% (2027) and 9.96% (2026) figures are the employer-coverage affordability test.

The 400% cliff by household size

Household2027: 100% (lowest for credit)2027: 400% cliff2027: most you pay for benchmark at 400%2026: 400% cliff
1$15,960$63,840$544/mo$62,600
2$21,640$86,560$737/mo$84,600
3$27,320$109,280$931/mo$106,600
4$33,000$132,000$1,124/mo$128,600
5$38,680$154,720$1,318/mo$150,600
6$44,360$177,440$1,511/mo$172,600
7$50,040$200,160$1,705/mo$194,600
8$55,720$222,880$1,898/mo$216,600

48 states + DC. 2027 coverage uses the 2026 HHS guidelines ($15,960 + $5,680 per extra person); 2026 coverage uses the 2025 guidelines ($15,650 + $5,500). Alaska and Hawaii use higher guidelines (pick them in the calculator). Sources: HHS 2026 poverty guidelines · HHS 2025 poverty guidelines · 26 CFR 1.36B-1(h) · IRS PTC FAQs.

At the cliff, a household pays at most 10.22% of income for the benchmark plan. One dollar over, it pays the full price. How big that jump is depends on local premiums and ages; older people and high-cost areas lose the most.

Repayment: no cap starting with 2026

Advance credit is based on the income you estimate when you enroll. At tax time, Form 8962 recomputes it with your actual income. For tax years before 2026 a cap limited what most people paid back; for 2026 and later, you repay the full difference.

“There is no repayment cap for tax years after 2025. For tax years after 2025, you must repay the full amount by which your advance credit payments exceed your Premium Tax Credit.” — IRS PTC FAQ Q31

Source: IRS PTC FAQs

Who can't get the credit

Sources: IRS PTC FAQs · HealthCare.gov coverage gap · HealthCare.gov cost-sharing reductions

Show me the details

How the calculator works

  1. Poverty line for your household size, from the HHS guidelines in effect when open enrollment starts (2026 guidelines for 2027 coverage).
  2. Income ÷ poverty line × 100, decimals dropped (Form 8962 line 5). Over 4 × the line = no credit.
  3. Applicable percentage from the IRS table, straight-line within the band, rounded to 0.01%.
  4. Annual share = income × percentage, rounded to dollars; monthly share = annual ÷ 12, rounded (Form 8962 lines 8a/8b).
  5. Monthly credit = benchmark premium − monthly share, never below $0 and never more than your plan's premium.

Limits of this page

  • Assumes the same household and coverage all 12 months. Mid-year changes, part-year coverage, and splitting a policy between tax families are figured month by month on Form 8962.
  • The benchmark premium depends on where you live and the ages of the people enrolling; it isn't the same as the price of the plan you choose. Tobacco surcharges don't count toward the benchmark.
  • Doesn't model immigrant-status rules, the domestic-abuse exception for married filing separately, or ICHRA/QSEHRA offers.
  • Not tax advice. The Marketplace's estimate and your tax return are what count.

Why trust this: every percentage and poverty figure links to the IRS revenue procedure, regulation or HHS notice it comes from. The math follows Form 8962 step by step and reproduces the regulation's worked examples.

Not tax advice. We republish IRS and HHS figures with dates and do the arithmetic on what you type. No plan quotes, no insurer picks.

Sources & as-of dates

FAQ

How is the ACA premium tax credit calculated?

Take the monthly premium of the second lowest cost silver plan for your household and subtract your expected share: household income times the IRS applicable percentage, divided by 12. The credit can't be more than the premium of the plan you pick (26 CFR 1.36B-3).

What is the income limit for ACA subsidies in 2027?

400% of the poverty line: $63,840 for one person, $86,560 for two, $109,280 for three and $132,000 for four in the 48 states and DC, using the 2026 HHS guidelines. Alaska and Hawaii are higher.

What percentage of income will I pay for a Marketplace plan in 2027?

For the benchmark silver plan, 2.15% of income below 133% of the poverty line, rising to 10.22% from 300% to 400% (IRS Rev. Proc. 2026-26). Over 400% there is no credit.

What happens if I earn $1 over 400% of the poverty line?

You lose the whole premium tax credit for the year and must repay any advance credit paid to your insurer, with no repayment cap for tax years after 2025 (IRS FAQ Q31).

Which year's poverty guidelines are used for 2027 coverage?

The 2026 HHS guidelines, the ones in effect when open enrollment starts on Nov. 1, 2026 (26 CFR 1.36B-1(h)). The IRS gives the same rule: the 2025 credit used the 2024 guidelines.

Can I get a premium tax credit if my income is below the poverty line?

Generally no. In states that didn't expand Medicaid, adults below 100% who don't qualify for Medicaid fall into a coverage gap (HealthCare.gov). If the Marketplace estimated at least 100% when you enrolled, you keep advance credits even if income ends up lower.

Is my job's health plan affordable for 2027?

For plan years starting in 2027, job coverage is affordable if your share of the cheapest self-only plan that meets minimum value is no more than 10.22% of household income (9.96% in 2026). If it's affordable, you can't get the credit.

Facts, not insurance advice. We don't sell insurance or provide quotes; confirm coverage and requirements with the insurer, an agent or your state insurance department.