Health Care Affordability Act of 2025

This bill adjusts tax credit rules for health insurance under the Affordable Care Act to make coverage more affordable for lower-income households. It replaces a flat income threshold with a sliding scale, reducing the percentage of income people pay for premiums based on their household income relative to the poverty line (e.g., 0% for incomes up to 150% of poverty, rising to 8.5% at 400%+). The change directly affects individuals buying insurance through health insurance marketplaces who qualify for tax credits. It takes effect for tax years beginning after 2025, modifying how the IRS calculates subsidy eligibility.