Early filings and analyses indicate Affordable Care Act (ACA) premiums are likely to rise again in 2027 after a sharp increase in 2026. A Peterson-KFF Health System Tracker review of proposed rate changes released publicly shows that, among 77 insurers across 17 jurisdictions, the median proposed premium increase is about 14%. The report attributes rate hikes primarily to expectations that the ACA risk pool will shrink and be sicker than in the prior year, alongside a decline in enrollment. Enrollment fell by about 3 million in 2026, and the analysis projects continued weakening of the insured population going into 2027.

Other assessments cited by outlets similarly point to double-digit increases for 2027 and forecast insurance-plan rate changes varying by state. Estimates range from roughly single digits in Vermont to around the low-20% range in Washington, based on preliminary analyses.

Final 2027 ACA rates are expected to be posted in October, with plan open enrollment beginning Nov. 1. Insurer rate proposals were filed in mid-June and are to be finalized by Aug. 12, according to the Centers for Medicare and Medicaid Services.