About the Health Insurance Out-of-Pocket Calculator
This out-of-pocket cost calculator splits a medical bill between you and your health plan. Enter the allowed amount for the service (the negotiated price on your Explanation of Benefits or a price estimate), your deductible and how much of it you have already met, your coinsurance percentage, any copay, and your out-of-pocket maximum with what you have spent toward it this year.
Use it before a planned procedure, to check a bill after a hospital stay, or to compare how the same surgery would cost on two plans. It shows how much of your payment goes to the deductible, how much is coinsurance and copay, and how much room is left before you hit the annual out-of-pocket limit — after which the plan pays 100% of covered in-network care.
The model assumes an in-network, covered service: the copay is charged first, the rest of the bill goes to the deductible until it is met, and coinsurance applies to whatever remains. Some plans waive the deductible for copay services or charge only a copay; set the deductible or coinsurance to zero to match those plans. Premiums never count toward the out-of-pocket maximum.
With the default inputs, the you pay is $2,200.00. Change any value above to recalculate instantly.
How to use the health insurance out-of-pocket calculator
- 1Enter the allowed amount from your Explanation of Benefits or a price estimate.
- 2Enter your deductible and how much you have met so far this year.
- 3Enter your coinsurance percentage and any copay for the service.
- 4Enter your out-of-pocket maximum and what you have paid toward it.
- 5Read what you owe, what insurance pays, and how much room is left.
Formula and method
The copay (if any) is taken first. The remaining allowed amount is applied to whatever is left of your deductible; you pay all of that portion. Coinsurance is then your percentage of the amount above the deductible. The sum is capped by the room left under your out-of-pocket maximum, which is the out-of-pocket max minus what you have already paid this plan year.
Insurance pays the allowed amount minus your share. The calculation assumes the service is covered and in network; out-of-network care, balance billing, and non-covered services do not count toward the out-of-pocket limit and are not modelled.
- Bill
- Allowed (negotiated) amount for the service
- Deductible left
- Deductible minus amount already met
- Coinsurance%
- Your percentage share after the deductible
- OOP max left
- Out-of-pocket maximum minus amount already paid
Worked examples
$5,000 MRI and follow-up, $1,500 of deductible left
The first $1,500 finishes your deductible. Coinsurance of 20% applies to the remaining $3,500, adding $700. You pay $2,200 and the plan pays $2,800; you still have $3,300 of room under the out-of-pocket maximum.
Emergency room visit with a $250 copay, deductible met
The $250 copay comes first. With the deductible already met, 20% coinsurance applies to the other $950, or $190. Your total is $440.
$60,000 surgery hits the out-of-pocket maximum
Without a cap you would owe the $3,000 deductible plus 30% of $57,000 ($17,100) = $20,100. The $8,000 out-of-pocket maximum limits your share, so the plan pays $52,000 and you save $12,100.
Frequently asked questions
How do deductible and coinsurance work together?+
You pay the full allowed amount of covered care until you meet your deductible. After that you pay your coinsurance percentage — for example 20% — and the plan pays the rest, until your spending reaches the out-of-pocket maximum.
What counts toward the out-of-pocket maximum?+
Deductibles, coinsurance and copays for covered in-network services count. Monthly premiums, out-of-network care on many plans, balance bills and services your plan does not cover do not count toward the limit.
Do copays count toward my deductible?+
It depends on the plan. Copays always count toward the out-of-pocket maximum on ACA-compliant plans, but many plans do not credit copays toward the deductible. Check your Summary of Benefits and Coverage.
What happens after I reach my out-of-pocket maximum?+
Once you reach the out-of-pocket maximum, the plan pays 100% of the allowed amount for covered in-network services for the rest of the plan year. You still pay your premiums.
Why is the allowed amount lower than the hospital bill?+
Insurers negotiate prices with in-network providers. Your cost sharing is based on the allowed amount shown on the Explanation of Benefits, and in-network providers cannot bill you for the difference.
Results are estimates for educational purposes and are not financial advice. Rates, fees and terms vary — confirm with your lender or a licensed advisor before making decisions.