Cost sharing reduction (CSR)

A discount that lowers the amount you have to pay for deductibles, copayments, and coinsurance. In the Health Insurance Marketplace, cost-sharing reductions are often called “extra savings.” If you qualify, you must enroll in a plan in the Silver category to get the extra savings.
When you fill out a Marketplace application, you’ll find out if you qualify for premium tax credits and extra savings. You can use a premium tax credit for a plan in any metal category. But if you qualify for extra savings too, you’ll get those savings only if you pick a Silver plan.
If you qualify for cost-sharing reductions, you also have a lower out-of-pocket maximum — the total amount you’d have to pay for covered medical services per year. When you reach your out-of-pocket maximum, your insurance plan covers 100% of all covered services.
If you’re a member of a federally recognized tribe or an Alaska Native Claims Settlement Act (ANCSA) Corporation shareholder, you may qualify for additional cost-sharing reductions.