Out-of-Pocket Maximum Calculator
Estimate your remaining out-of-pocket exposure and your worst-case annual health-care spending: premiums plus the out-of-pocket maximum, minus what you've already paid.
How to use this tool
- Enter your plan's annual out-of-pocket maximum for in-network care.
- Enter how much cost-sharing you've already paid this year.
- Enter your monthly premium and the number of premium months remaining.
- Read your remaining exposure and worst-case total to set your emergency fund.
Your out-of-pocket maximum is the ceiling on what you can pay for covered, in-network care in a plan year — once you reach it, the insurer pays 100%. This calculator shows how much cost-sharing exposure you have left and your realistic worst-case spend for the year, including the premiums you still owe (premiums do not count toward the cap).
Formula
Remaining exposure and worst-case spend
Remaining exposure = max(0, Out-of-pocket max − Paid so far)
Premiums remaining = Monthly premium × Months left
Worst-case total = Remaining exposure + Premiums remaining
Premiums are added separately because they never count toward the out-of-pocket maximum.
How it works
The out-of-pocket maximum is the single most important number for budgeting a bad health year: it bundles your deductible, coinsurance, and copays into one ceiling. This calculator subtracts what you have already paid toward that ceiling to give your remaining exposure — the most additional cost-sharing you could face. It then adds the premiums you still owe for the year, because those are a separate, unavoidable cost that the cap does not include.
The worst-case total assumes you incur enough covered, in-network care to hit the cap. Most years you will spend far less, but the figure is exactly the emergency-fund target that protects you against a serious illness or accident. Note that out-of-network care, balance bills, and non-covered services can push real costs above the in-network maximum, so treat this as a floor-of-the-ceiling for in-network spending.
This is general information, not medical or financial advice. Family plans often have both an individual and a higher family out-of-pocket maximum; enter the limit that applies to the person or family unit you are budgeting for, and confirm the details in your plan documents.
Worked example
$8,000 OOP max, $2,500 already paid, full year of premiums left
- Remaining exposure: $8,000 − $2,500 = $5,500.
- Premiums remaining: $300 × 12 months = $3,600.
- Worst-case total: $5,500 + $3,600 = $9,100.
Remaining cost-sharing exposure: $5,500.00
Worst-case total by OOP max ($300/mo premium, full year, $0 paid so far)
| OOP maximum | Remaining exposure | Premiums (12 mo) | Worst-case total |
|---|---|---|---|
| $3,000 | $3,000.00 | $3,600.00 | $6,600.00 |
| $5,000 | $5,000.00 | $3,600.00 | $8,600.00 |
| $8,000 | $8,000.00 | $3,600.00 | $11,600.00 |
| $9,450 | $9,450.00 | $3,600.00 | $13,050.00 |
Key terms
- Out-of-pocket maximum
- The most you pay for covered in-network care in a plan year; after it, the insurer pays 100%.
- Cost-sharing
- The portion of covered costs you pay yourself — deductible, coinsurance, and copays — all of which count toward the cap.
- Premium
- The fixed amount you pay for coverage each month; it does not count toward the out-of-pocket maximum.
- Worst-case spend
- Premiums for the rest of the year plus the remaining out-of-pocket exposure — your maximum realistic in-network cost.
Frequently asked questions
- Do premiums count toward my out-of-pocket maximum?
- No. Premiums are excluded from the out-of-pocket maximum. This calculator adds them separately so your worst-case total reflects the real money you'd spend.
- What counts toward the out-of-pocket maximum?
- Your deductible, coinsurance, and copays for covered in-network care all count. Premiums, out-of-network charges, and non-covered services generally do not.
- Why should I know my worst-case health cost?
- It tells you the emergency fund you need to weather a serious illness or accident. Once you hit the out-of-pocket maximum, the insurer covers 100% of further in-network care.