Calculator Inputs
Example Data Table
| Item | Sample value | Notes |
|---|---|---|
| Monthly premium | $180.00 | Enter your share. |
| In-network deductible | $1,500.00 | Paid before coinsurance. |
| In-network coinsurance | 20% | Patient share after deductible. |
| In-network OOP max | $7,000.00 | Caps covered cost-sharing. |
| Primary visits | 3 @ $180 | Copay $30 each. |
| Specialist visits | 2 @ $280 | Copay $50 each. |
| Labs total | $250.00 | Total allowed costs. |
| Prescription fills | 6 @ $40 | Copay $10 each. |
Formula Used
This tool estimates your annual cost responsibility using a deductible-first approach.
- Allowed cost per category = quantity × allowed per service (or a total allowed input).
- Copays total = quantity × copay per service, capped at allowed cost.
- Eligible spend = max(0, allowed − copays).
- Deductible paid = min(eligible spend, deductible).
- Coinsurance paid = (eligible spend − deductible paid) × (coinsurance % ÷ 100).
- Out-of-pocket (covered) = copays + deductible paid + coinsurance paid.
- Out-of-pocket max cap = min(out-of-pocket (covered), out-of-pocket max).
- Total medical responsibility = capped out-of-pocket + non-covered expenses + preventive responsibility.
- Net annual cash = (annual premium − premium subsidy) + max(0, medical responsibility − account payments).
How to Use This Calculator
- Choose coverage type and your network mode.
- Enter plan details: deductible, coinsurance, and out-of-pocket max.
- Fill in expected service use and allowed costs.
- Add non-covered expenses and account payments if applicable.
- Click Calculate to view results above the form.
- Use the CSV or PDF buttons to export your summary.
Define annual cost inputs
Start with the time window you want to model. If coverage changes midyear, set months covered to match. Multiply the monthly premium by covered months to estimate premium cash, then subtract any annual subsidy to get net premium cash. This creates a baseline even before care happens.
Estimate allowed medical spending
Next, list expected services and enter allowed amounts. Allowed cost is the price used for cost sharing, so it is more useful than billed charges. For example, three primary visits at 180 each create 540 allowed, while six prescriptions at 40 each create 240 allowed. Copays reduce eligible spend first, so a 30 copay on those visits removes 90 before the deductible is applied.
Apply deductible and coinsurance rules
After copays, eligible spend flows through the deductible, then coinsurance. If in-network eligible spend is 2,000 and the deductible is 1,500, the remaining 500 is subject to coinsurance. With a 20 percent patient rate, coinsurance adds 100. Covered out-of-pocket becomes copays plus deductible paid plus coinsurance, and it is capped by the out-of-pocket maximum when the limit is reached.
Include premium and reimbursement effects
Many households also use accounts such as HSA, FSA, or employer reimbursement to pay part of the medical responsibility. Enter the annual amount you expect to use, and the tool nets it against your medical responsibility to estimate cash you personally fund. Non-covered expenses stay outside plan caps, so they are added after cost sharing is capped.
Run scenarios and interpret results
Finally, stress test your budget. Record last year’s spending totals to calibrate your allowed-cost assumptions more accurately. Use mixed network mode if some care may occur out of network, and set the out-of-network share to reflect uncertainty. Create a conservative scenario with imaging and hospitalization costs, and a scenario with only visits and labs. Compare net annual cash across scenarios to choose savings targets and evaluate plan value.
FAQs
1) What is an allowed cost?
It is the negotiated amount used for cost-sharing. It can be lower than the billed charge. Use your explanation of benefits or provider estimate when possible.
2) Do copays count toward the out-of-pocket maximum?
Many plans count copays toward the limit, but not all. This tool assumes copays count. If your plan differs, set copays to zero and adjust other inputs.
3) Why do in-network and out-of-network differ?
Plans usually apply higher deductibles and coinsurance outside the network, and some costs may not be covered. Separate fields let you model those differences.
4) How does the mixed network option work?
Mixed mode splits each allowed cost by your chosen out-of-network percent. It is a quick estimate when you expect some care outside the network.
5) What are non-covered expenses?
These are costs your plan does not cover or does not count toward limits, such as certain services or items. They are added after cost-sharing is capped.
6) Are premiums included in out-of-pocket?
Premiums are separate from medical cost-sharing. This tool reports both: medical responsibility and total annual cash including premium, so you can compare overall costs.