Most people know about premium subsidies. Far fewer know about the second, quieter form of marketplace help: cost-sharing reductions, or CSRs. Premium subsidies lower your monthly bill. CSRs lower what you pay when you actually use care — your deductible, copays, and out-of-pocket maximum. For the right household, they are worth more than the subsidy itself.
What cost-sharing reductions actually do
Every marketplace plan has an actuarial value — the share of typical medical costs the plan pays. A standard Silver plan pays about 70%. CSRs upgrade that Silver plan so it pays much more, which shows up as a dramatically lower deductible and out-of-pocket limit. You still pay the Silver premium.
Who qualifies
Eligibility is based on your household income relative to the federal poverty level (FPL):
| Household income | Silver plan pays about | What it feels like |
|---|---|---|
| 100%–150% FPL | 94% | Close to Platinum-level coverage |
| 150%–200% FPL | 87% | Better than most Gold plans |
| 200%–250% FPL | 73% | A modest boost over standard Silver |
You must also qualify for a premium tax credit and enroll through your state's marketplace. Members of federally recognized tribes have additional cost-sharing protections at other income levels.
The catch: Silver only
CSRs apply only to Silver plans. If you qualify and choose Bronze to save on premium, you give up the reduced deductible entirely. This is the most common expensive mistake we see: a household at 140% FPL picks a Bronze plan with a very high deductible when a CSR Silver plan would have cost a little more per month but a small fraction as much when they needed care.
How to tell if a Silver plan has CSRs
When you shop through the marketplace and qualify, Silver plans display the reduced deductible directly. Look for a Silver plan with a deductible far below the Bronze options — that is the CSR at work. If every Silver plan shows a standard deductible, either your income is above 250% FPL or you are not being shown marketplace pricing.
Is a CSR Silver plan always the right choice?
- Usually yes at 100%–200% FPL — the coverage upgrade is large.
- Often at 200%–250% FPL — compare total expected cost, since the boost is smaller.
- Not necessarily if you rarely use care and a $0-premium Bronze plan is available — but understand what you give up.
For how the metal tiers compare in general, see Bronze vs. Silver vs. Gold vs. Platinum.
Keep your income estimate accurate
Because CSR eligibility depends on projected income, a big mismatch can shift you into a different CSR level or out of eligibility. Start with our guide to estimating your 2027 income.
Want to see whether you qualify for a CSR Silver plan? Our free tool compares plans across top carriers and shows what you would actually pay in about 60 seconds — no obligation, and a licensed agent reviews your options with you. Get your free quote →