ACA marketplace health insurance is unlike any other insurance product because the price you pay is directly tied to your household income. Two identical households with the same Silver plan can pay $0 and $800 per month, respectively, based on income alone. Our Health Insurance Calculator runs the actual subsidy math against 2026 Federal Poverty Level thresholds to show you both the unsubsidized plan cost and your estimated out-of-pocket premium.
The ACA premium tax credit caps how much of your income you pay for a benchmark Silver plan. The government pays the rest directly to your insurer. This means a family earning $45,000 and a family earning $90,000 can enroll in the exact same plan at dramatically different monthly costs. The calculator shows both numbers so you can see the subsidy in dollar terms.
The calculator shows your income as a percentage of the Federal Poverty Level for your household size. Here is what each range means for your coverage options:
| FPL % | Subsidy Status | Key Notes |
|---|---|---|
| Under 100% | Medicaid eligible (most states) | Apply through Medicaid, not marketplace |
| 100-150% | Near-zero premium plans available | Enhanced subsidies under current law |
| 150-250% | Sliding-scale subsidies + CSRs | Silver plans with CSRs often best value |
| 250-400% | Sliding-scale subsidies | Premium capped at 6-8.5% of income |
| Above 400% | Subsidies still available | Premium capped at 8.5% of income (IRA extension) |
The "Estimated Monthly Subsidy" in your results is the amount the federal government pays directly to your insurer each month. Your actual out-of-pocket premium is the plan's full price minus this subsidy. The subsidy is not a reimbursement -- you never see it. It reduces your bill before you pay.
The right metal tier depends on how much healthcare you actually use:
The calculator adds individual age-based rates for up to five household members. A 50-year-old pays roughly three times what a 25-year-old pays for the same plan. If your household includes members of very different ages, the age composition of your household significantly affects your total unsubsidized premium -- and therefore how large your subsidy needs to be.
The premium and deductible are the two numbers everyone compares, but a handful of other details determine whether a plan actually works for how you use healthcare:
Checking these before enrollment takes a few extra minutes on the marketplace site, and it's the difference between an estimate that matches your actual costs and one that looks good on paper but doesn't reflect how you'll really use the plan.
Note: If your income is close to a subsidy cliff, small changes matter. A household that estimates income slightly above a threshold and later earns less may be leaving a larger credit unclaimed until tax time; a household that underestimates may owe money back. Report income changes to the marketplace promptly, as soon as they happen, rather than waiting for annual reconciliation at tax time.
ACA subsidies are calculated against Modified Adjusted Gross Income -- your gross income before most deductions, not the amount deposited in your bank account. A W-2 employee earning $60,000 gross with $12,000 in 401(k) contributions has a MAGI of approximately $60,000 for subsidy purposes, not $48,000. Using take-home pay overstates your subsidy and will cause reconciliation issues at tax time.
Bronze plans have low monthly premiums but deductibles that often exceed $6,000 per person. If you take regular prescriptions, see specialists, or have any planned medical procedures, a Bronze plan's total annual cost -- premium plus out-of-pocket -- frequently exceeds a Silver plan's total cost. Calculate total annual exposure, not just monthly premium.
Tobacco users can be charged up to 50% more for marketplace plans in most states. Our calculator applies this when you select Yes for tobacco use. This surcharge is not offset by the premium tax credit -- meaning you pay it in full. Some states prohibit the surcharge entirely. If you are a tobacco user, verify whether your state allows it before assuming the surcharge applies.
Note: Open enrollment runs from November 1 through January 15 in most states. Missing it means waiting until next year unless you qualify for a Special Enrollment Period -- triggered by events like losing job-based coverage, getting married, or having a child.
Here is a realistic ACA marketplace estimate for a household of two earning $45,000 per year (roughly 250% of the federal poverty level for a two-person household), shopping a Silver plan:
| Line Item | Value | What It Means |
|---|---|---|
| Gross benchmark Silver premium | $680/month | The second-lowest-cost Silver plan in this county before any subsidy |
| Expected contribution (% of income) | $150/month | What this household is expected to pay based on the sliding income scale |
| Monthly premium tax credit | $530/month | The gap between the benchmark premium and the expected contribution |
| Net premium (any metal tier) | As low as $150/month | The credit applies to whichever plan the household actually chooses |
| Cost-sharing reduction eligibility | Yes, on Silver only | At 250% FPL this household qualifies for a meaningfully richer Silver plan |
| Effective deductible with CSR | $800-$1,500 | Far below the standard Silver deductible thanks to the cost-sharing reduction |
The detail that trips up the most shoppers: the premium tax credit is the same dollar amount no matter which metal tier you pick, but the cost-sharing reduction only applies if you stay on a Silver plan. A household at this income level that "upgrades" to Gold for better cost-sharing is actually giving up a benefit that made Silver artificially generous in the first place. Before assuming Bronze or Gold is the better deal, check your CSR eligibility -- it can be the single biggest factor in the comparison. Use the Health Insurance Calculator to compare total annual cost across tiers at your actual expected usage.
FPL stands for Federal Poverty Level -- a federal income threshold updated annually. ACA subsidies are calculated as a percentage of your income relative to FPL. In 2026, ACA subsidies are measured against the 2025 federal poverty guidelines, under which the base FPL for a single person is $15,650. Your income as a percentage of that number determines your subsidy amount and plan eligibility.
Use your Modified Adjusted Gross Income (MAGI) -- your gross income before most deductions, not your take-home pay. For most W-2 employees this is close to your gross salary. For self-employed individuals it includes business income after deductions. Using net income will overstate your subsidy.
Metal tiers describe the cost-sharing split between you and the insurer. Bronze plans have the lowest premiums but highest deductibles (insurer pays ~60% of costs). Silver is the middle ground and the only tier eligible for Cost-Sharing Reductions. Gold plans have higher premiums but lower out-of-pocket costs. Platinum has the highest premiums and lowest cost-sharing.
Cost-Sharing Reductions (CSRs) are extra subsidies available only on Silver plans for households with income between 100% and 250% of FPL. They reduce your deductible, copays, and out-of-pocket maximum significantly. If your income qualifies, a Silver plan with CSRs often beats a Bronze plan in total annual cost.
Insurers in most states can charge up to 50% more for tobacco users. Our calculator applies a surcharge if you select Yes for tobacco use. Some states prohibit the tobacco surcharge -- check your state's rules if this applies to you.