If you buy health insurance through HealthCare.gov or a state marketplace, your coverage and your tax return are permanently linked. The subsidy that lowers your premium each month is an advance on a tax credit, and the IRS settles up with you every spring. Get the income estimate right and it is a non-event. Get it wrong and you can owe money back, and starting with the 2026 tax year there is no longer any limit on how much.
This guide covers the three places health insurance touches your taxes: the Form 1095-A and Form 8962 reconciliation, the new no-cap repayment rule and how to protect yourself from it, and the 2026 health savings account limits that let you shelter thousands of dollars. It applies whether you are enrolled with one of the best health insurance companies of 2026 or shopping for a new carrier during the November open enrollment.
How the premium tax credit really works
The premium tax credit is a refundable federal tax credit for people who buy marketplace coverage and have household income between 100% and 400% of the federal poverty level. The enhanced version that removed the 400% cap expired on December 31, 2025, and as of this writing no extension has been enacted, so the original rules apply to 2026 and 2027 coverage.
Most people take the credit in advance: the marketplace estimates it from the income you project for the coverage year and pays that amount directly to your insurer each month as the advance premium tax credit, or APTC. The true credit is based on your actual income for the year, and the difference is reconciled on your return.
The credit itself is pegged to the second-lowest-cost Silver plan in your area, known as the benchmark. Your expected contribution toward that benchmark is a percentage of income set each year by the IRS. Under Revenue Procedure 2025-25, the 2026 percentages run from 2.10% of income at or below 133% of the poverty level up to 9.96% for households between 300% and 400%. The credit equals the benchmark premium minus your expected contribution, and you can apply it to any metal tier. Our premium tax credit guide has the full income table.
Form 1095-A: the document that starts everything
Every household that had marketplace coverage receives a Form 1095-A, the Health Insurance Marketplace Statement. HealthCare.gov posts it to your online account from mid-January and mails it by mid-February. You do not attach it to your return, but you cannot file correctly without it. According to HealthCare.gov, the form lists, month by month:
- The full premium for the plan you enrolled in
- The premium for the second-lowest-cost Silver plan, which is the benchmark used to compute your credit
- The advance premium tax credit paid to your insurer on your behalf
Check the form against your own records before you file. Common problems include a benchmark column showing zero for months when you paid a premium, and coverage months that do not match when your plan actually started. If you switched insurers during the year, you will get a separate 1095-A for each plan, and both go on the same Form 8962. That will be common in 2027: Cigna is leaving the individual market in all 11 of its states after December 31, 2026, and Molina is shrinking from 14 states to 6. If anything looks wrong, ask the marketplace for a corrected form before filing.
Form 8962: reconciling what you got with what you earned
The numbers from your 1095-A go onto Form 8962, where the advance payments are compared with the credit you were actually entitled to based on your final income and household size.
Three outcomes are possible:
- Income came in lower than estimated. You were entitled to a bigger credit; the difference is added to your refund.
- Income matched the estimate. Nothing changes.
- Income came in higher than estimated. You were advanced too much; the excess is added to your tax bill as a repayment.
The filing requirement is absolute. The IRS instructions for Form 8962 and HealthCare.gov’s reconciliation page both make clear that anyone who received advance credits must file a return with Form 8962 attached, even if their income is below the normal filing threshold. Skip it and the marketplace can cut off advance credits for the following year.
The repayment caps are gone for 2026
For years, households under 400% of the poverty level who received too much advance credit had their repayment capped. The One Big Beautiful Bill Act, signed July 4, 2025, eliminated those caps for tax years after 2025. When you file your 2026 return in early 2027, any excess advance credit must be repaid in full.
| Household income (percent of federal poverty level) | Tax year 2025 cap, single filer | Tax year 2025 cap, all other filers | Tax year 2026 and later |
|---|---|---|---|
| Under 200% | $375 | $750 | No cap; repay full excess |
| 200% to under 300% | $975 | $1,950 | No cap; repay full excess |
| 300% to under 400% | $1,625 | $3,250 | No cap; repay full excess |
| 400% and above | No cap | No cap | No cap; repay full excess |
The 2025 caps applied to the return you filed this spring; nothing after that.
A worked example
Consider a single freelancer who signed up for 2026 coverage estimating $40,000 in income. For 2026 coverage, subsidies are measured against the 2025 poverty guideline of $15,650 for one person, so $40,000 is about 256% of the poverty level and she received a substantial monthly advance credit all year.
Business picks up and she finishes 2026 with $55,000 in income. That is about 351% of the poverty level, still under the $62,600 cutoff, but her expected contribution is now 9.96% of income, or $5,478 for the year. Suppose Form 8962 shows she was advanced $3,000 more than she was entitled to.
- Under the tax year 2025 rules, a single filer between 300% and 400% of the poverty level would have owed at most $1,625.
- Under the tax year 2026 rules, she owes the entire $3,000.
Had she earned $63,000 instead, she would be over 400% of the poverty level and would repay every dollar of advance credit, which was true before the law changed too. What is new is that the territory below the cliff is no longer padded either.
How to avoid a repayment surprise
You do not need to predict your income perfectly. You need to keep the marketplace informed as it changes. These habits prevent most clawbacks:
- Report income changes within the month they happen. A raise, a new client, a spouse starting work or a bonus all count. Marketplace savings are based on your modified adjusted gross income for the coverage year, and you can update your estimate any time; the advance credit adjusts going forward.
- Take less than the full advance. If your income is lumpy, receive only part of your estimated credit each month and collect the balance as a refund at filing.
- Estimate high if you are near the cliff. Being advanced too little is corrected with a refund. Being advanced too much is corrected with a repayment.
- Watch out for the 400% line at year end. For 2026 coverage that line is $62,600 for a single person and $128,600 for a family of four. For 2027 coverage it moves to $63,840 and $132,000.
Self-employed readers face an extra wrinkle: the self-employed health insurance deduction and the premium tax credit affect each other, and the IRS provides an iterative calculation in Publication 974 to sort it out. Our guide to health insurance for the self-employed covers that interaction and the mid-year income update strategy in more detail.
The self-employed health insurance deduction
If you have self-employment income and no access to a subsidized employer plan, including through a spouse, you can deduct 100% of the premiums you pay for medical, dental, vision and qualified long-term care coverage for your household. The deduction is calculated on Form 7206 and flows to Schedule 1, line 17. It is an above-the-line deduction, but it cannot exceed your net profit from the business and it does not reduce self-employment tax.
Health savings accounts: the 2026 limits
A health savings account is triple tax-advantaged: contributions are deductible, growth is untaxed and withdrawals for qualified medical expenses are tax-free. To contribute you need to be enrolled in an HSA-eligible high-deductible health plan and have no other disqualifying coverage.
The 2026 figures come from IRS Revenue Procedure 2025-19:
| 2026 HSA and HDHP limit | Self-only | Family |
|---|---|---|
| Maximum HSA contribution | $4,400 | $8,750 |
| Additional catch-up contribution, age 55 and older | $1,000 | $1,000 |
| Minimum HDHP deductible | $1,700 | $3,400 |
| Maximum HDHP out-of-pocket limit | $8,500 | $17,000 |
What changed for 2026
The same 2025 law that removed the repayment caps expanded HSA access in three ways that matter for marketplace shoppers:
- Every Bronze and Catastrophic marketplace plan is treated as an HSA-eligible HDHP from January 1, 2026, regardless of its deductible or out-of-pocket structure. Previously you had to hunt for a Bronze plan specifically labeled HSA-eligible.
- Telehealth before the deductible is permanently allowed without breaking HSA eligibility.
- Direct primary care memberships of up to $150 a month for an individual or $300 for a family no longer disqualify you from contributing.
Our metal tiers guide explains when a Bronze plan makes sense; the HSA change tilts that calculation.
Using an HSA to stay under the subsidy cliff
HSA contributions reduce your adjusted gross income, and therefore the modified AGI the marketplace uses. That creates a legitimate lever for households sitting just above 400% of the poverty level.
Take a single 45-year-old expecting $65,000 in 2027, about $1,200 over the $63,840 cliff for 2027 coverage. With no credit, she pays full price. If she enrolls in a Bronze plan, which is automatically HSA-eligible, and contributes the full $4,400 to an HSA, her modified AGI falls to $60,600. She is now under 400% of the poverty level, her expected contribution toward the benchmark Silver plan is capped at 9.96% of income, or about $6,036 a year, and anything the benchmark costs above that comes back as a credit.
Other places health costs touch your return
- Employer coverage affordability. If your employer’s self-only plan costs you no more than 9.96% of household income in 2026, it counts as affordable and blocks a marketplace credit. Since 2023 the test for your spouse and children uses the cost of family coverage instead, which lets some families qualify even when the employee cannot.
- Itemized medical expenses. Unreimbursed medical expenses above 7.5% of adjusted gross income remain deductible on Schedule A for taxpayers who itemize, as of this writing. Premiums already deducted elsewhere do not count twice.
- COBRA premiums. Paid with after-tax dollars; they may count toward the itemized medical deduction but never qualify for the premium tax credit.
- Medicaid, CHIP and employer plans. No reconciliation; the 1095-B or 1095-C you receive is for your records only.
Our roundup of common health insurance mistakes covers the auto-renewal and reconciliation errors we see most often.
Bottom line
Marketplace subsidies are a tax credit paid early, and the IRS will always true them up. With the repayment caps gone from tax year 2026, the cost of a bad income estimate is unlimited, so the most valuable habit is updating your estimate whenever your income moves. The most valuable opportunity is the HSA: with every Bronze plan now eligible, a household that can fund the account gets a deduction of up to $4,400 or $8,750 and, in some cases, a way to stay under the 400% cliff.
Whichever plan you choose for 2027, keep the 1095-A, file the 8962 and treat your income estimate as a living number. When you are ready to shop, start with our guide to the best health insurance companies of 2026.