How reconciliation works
During the year, the marketplace paid part of your premium based on the income you estimated. At tax time, the IRS recalculates the credit using your actual income. If you received more than you qualified for, the difference is added to your tax bill. If you received less, it is added to your refund.
Why 2026 is different
Two things changed at once: the enhanced subsidies expired, bringing back the 400% FPL cliff, and the repayment cap was repealed. If your 2026 income crossed the cliff, you owe back every dollar of advance credit you received.
Planning for next year? Use the 2027 subsidy cliff calculator before you enroll.