Cost Sharing Reduction (CSR)

A cost sharing reduction (CSR) is a federal subsidy, or help from the government, under the Affordable Care Act (ACA) that lowers the deductibles, copays, and coinsurance you pay for covered care. CSR is available only with Silver Marketplace health insurance plans and is based on how much money your household makes relative to the federal poverty level.

Last updated: August, 2026

Key Takeaways   

  • A cost sharing reduction lowers deductibles, copays, and coinsurance for people who qualify.
  • You usually must pick a Silver Marketplace plan to use a cost sharing reduction.
  • Whether you qualify mainly depends on your household income and enrolling in Marketplace coverage.
  • This help can make your costs more predictable, especially if you expect to use care during the year.  

What is a Cost Sharing Reduction?

A cost sharing reduction is financial help that lowers the amount you pay when you use health care services. Instead of lowering your monthly premium, CSR focuses on costs you pay at the doctor’s office, pharmacy, or hospital, like deductibles, copays, and coinsurance. 

If you qualify, CSR is built into the plan benefits you sign up for, so you get the lower cost-sharing automatically when you use covered services.

In most cases, CSR is only available with Silver Marketplace health insurance plans, which is why plan category matters when comparing options. 

Who Qualifies for Cost Sharing Reductions?

To qualify for CSR, you must:

  • Choose a Silver Marketplace plan
  • Have a household income between 100% and 250% of the federal poverty level
  • Not qualify for other coverage like Medicaid or Medicare 

Income levels and CSR amounts:

  • If your income is 100-150% of poverty level: You get the most help (lowest deductibles and copays)
  • If your income is 150-200% of poverty level: You get medium help
  • If your income is 200-250% of poverty level: You get some help
  • If your income is over 250% of poverty level: You don't qualify for CSR

How This Shows Up in Real Life

Let’s say you sign up for a Silver Marketplace plan and qualify for cost sharing reductions. When you go to an in-network doctor, you may have a lower copay than you would with a regular Silver plan. For example, without CSR, your copay might be $40. With CSR, it might only be $15.

 If you need lab work or a prescription, you pay less out of pocket because your plan's deductible or coinsurance is lower. Let's say your regular deductible would be $3,000. With CSR, it might drop to $500 or even $0, depending on your income. This means your plan starts helping pay for care much sooner.

 The savings add up throughout the year, especially if you see doctors regularly or take prescription medicines. 

How Cost Sharing Reductions Affect What You Pay

Cost sharing reductions can make using care more affordable, especially if you expect regular visits or prescriptions. This can also reduce early-year costs, because a lower deductible may mean your plan starts sharing costs sooner. The tradeoff is that CSR usually requires signing up for a Silver plan, even if another category has a lower monthly premium.

Comparing your expected care needs against both monthly premiums and out-of-pocket costs can help you pick what fits your budget best. 

Where to Find This in Your Plan Details

To check whether cost sharing reductions apply to your coverage, you can look at: 

These resources can help you see your deductible, copays, coinsurance, and out-of-pocket maximum. 

How This Changes Across Marketplace Plans 

Cost sharing reductions can change how a Silver plan works compared to other categories. The biggest difference is that CSR creates lower-cost versions of Silver plans for people who qualify, which can reduce what you pay when you receive care. 

  • Silver plans — Usually the only plan category that includes cost sharing reductions for eligible members.
  • Bronze plans — May have lower monthly premiums, but they usually have higher deductibles and do not include CSR benefits.
  • Gold plans — May have higher monthly premiums and lower cost-sharing, but they usually do not include CSR benefits.
    • Note — Even within Silver plans, your costs can be different depending on whether your plan includes CSR and how your benefits are set up.

FAQs About Cost Sharing Reduction

No. A premium tax credit helps lower your monthly premium. A cost sharing reduction lowers deductibles, copays, and coinsurance.

In most cases, yes. Cost sharing reductions are generally available only with Silver Marketplace plans. If you choose Bronze or Gold, you typically won't receive CSR benefits even if you qualify. 

Whether you qualify is based on factors like household income and Marketplace rules for your area. When you apply for coverage, the Marketplace will tell you whether you qualify and what savings are available. 

They can lower cost-sharing for many covered services, especially when you use in-network providers. Your exact costs still depend on your plan’s rules and what type of care you get. 

No. Cost sharing reductions are only available with Silver Marketplace plans. Even if your income qualifies you for CSR, you won't get the lower deductibles and copays unless you pick a Silver plan. If you choose Bronze or Gold instead, you'll follow that plan's regular cost-sharing rules.

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Have questions about how this works with your Ambetter Health plan?

Already covered? Your benefits vary by plan and location. Limitations and exclusions may apply. Contact Ambetter Health or call Member Services at the number on the back of your Member ID Card for answers specific to your coverage.   

Not yet a member? Our licensed agents are ready to help you find the perfect plan. Call 855-680-3270 (TTY: 711), Monday-Friday 8 a.m. to 9 p.m. ET, to discuss your health insurance options.

Sources:  

Healthcare.gov - Cost sharing reduction

Healthcare.gov/glossary - Cost sharing reduction

Healthcare.gov- Saving money on health insurance