The new prices will apply to individual plans sold through Get Covered New Jersey. Open enrollment runs from Nov. 1 through Jan. 31, when residents can compare plans and select coverage.

Rate increases vary substantially by insurer. UnitedHealthcare’s average increase is 35.7%, while Oscar Garden State Insurance Corporation’s is 29.3%. Ambetter from WellCare of New Jersey’s rates will rise 20.8% on average. AmeriHealth Insurance Co. set an average increase of 17%, and Horizon Blue Cross Blue Shield of New Jersey’s is 15.3%. Individual costs will depend on the insurer, plan and customer.

About eight in 10 marketplace enrollees will remain eligible for some state or federal financial assistance, according to state information. But acting Insurance Commissioner Susan Ochs warned that higher premiums could add to pressure on household budgets.

“These health insurance rate increases will place extraordinary pressure on household budgets and drive more New Jerseyans to make the heartbreaking choice to drop coverage altogether,” Ochs said in a statement.

Insurers cited higher medical-care and prescription-drug costs. State insurance officials also pointed to expectations of greater claims costs as the insured population becomes sicker following the expiration of enhanced federal premium tax credits.

Congress did not renew the expanded subsidies, which were enacted in 2021 and helped reduce monthly premiums and expand enrollment. Their expiration has increased costs for many customers nationwide. A KFF analysis found that millions have dropped ACA coverage, with younger and healthier people more likely to leave. That shift can raise costs for those who remain insured because they are more likely to need medical care.

The coming increases add a new cost challenge for New Jersey residents weighing whether they can afford to maintain coverage. Residents can use the state marketplace during open enrollment to review available plans and financial assistance.