In 2027, a little extra income could cost you a lot more than extra taxes.
The ACA premium tax credit, which lowers the cost of Marketplace health insurance, eased insurance costs for many Americans. During Covid, a temporary waiver removed any income limits and expanded eligibility. But those enhancements expired at the end of 2025 and, beginning in 2027, eligibility generally reflects a return to the pre-2021 structure: households between 100% and 400% of the federal poverty level (FPL) may qualify, and those above 400% generally do not.
There is no gradual phase-out—the 400% cutoff is a cliff, and a household that crosses it loses the entire credit.
Subsidies for 2027 plans use the 2026 poverty guidelines: $15,960 for one person and $33,000 for a family of four. That puts the 400% cutoff at $63,840 for a single adult and $132,000 for a family of four in most states.
The income that counts is modified adjusted gross income (MAGI), not salary alone. It can include self-employment earnings, investment gains, retirement withdrawals, and unemployment benefits. A bonus, a spouse’s raise, or a one-time stock sale can push a household over the line.
Most enrollees receive their credit in advance, based on an income estimate made at enrollment, but the actual figure is reconciled on the federal tax return. For tax years after 2025, income-based repayment caps no longer apply, so consumers who received more than they qualified for generally must repay the full excess. For households that end up above 400%, that may mean repaying all the advance credits they’ve received.
Self-employed workers, freelancers, commission earners, and anyone with irregular income face the greatest risk, as do early retirees managing withdrawals and households expecting a raise or job change.
What to do:
- Estimate carefully. Project full-year MAGI conservatively before choosing how much credit to take in advance.
- Update the Marketplace. Report income or household changes during the year so advance payments stay accurate.
- Consider lowering MAGI. Pre-tax retirement contributions and HSA contributions can reduce countable income for households near the threshold.
- Expect higher premiums. Insurers have proposed largely double-digit increases for 2027. Compare plans even if you are keeping your current one.
- Seek professional advice. A tax preparer or Marketplace navigator can model your numbers before you commit.
In most states, open enrollment for 2027 ACA Marketplace coverage began November 1. For middle-income households, the rules for premium assistance now differ sharply from recent years, and a miscalculation can lead to a large bill at tax time.
This material has been prepared for informational purposes only, and is not intended to provide or be relied upon for legal or tax advice. If you have any specific legal or tax questions regarding this content or related issues, please consult with your professional legal or tax advisor.
