| Scenario | Monthly premium | Deductible | Out-of-pocket max | Allowed charges | Member total cost |
|---|---|---|---|---|---|
| Low use | $300 | $1,000 | $4,000 | $900 | $3,900 |
| Moderate use | $480 | $1,500 | $6,500 | $3,500 | $8,000 |
| High use | $650 | $3,000 | $8,700 | $25,000 | $16,500 |
- Gross premiums = Monthly premium × Months covered.
- Member premiums = max(0, Gross premiums − Employer support − Subsidies).
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Split allowed charges into:
- Deductible-subject allowed (eligible for deductible + coinsurance)
- Copay-only allowed (member pays copay, insurer pays the rest)
- Deductible paid = min(Deductible, Deductible-subject allowed).
- Coinsurance paid = (Deductible-subject allowed − Deductible paid) × Coinsurance%.
- Cost sharing before cap = Deductible paid + Coinsurance paid + Copays (if applicable).
- Member out-of-pocket paid = min(Cost sharing before cap, Out-of-pocket max).
- Insurer portion (estimate) = Total allowed charges − Member paid on claims.
- Total member cost = Member premiums + Member out-of-pocket paid.
- Enter your monthly premium, months covered, and any employer or subsidy support.
- Set deductible, coinsurance, and out-of-pocket maximum using your policy summary.
- Add expected visits and prescriptions, then enter realistic allowed costs.
- Enter lab, procedure, and hospital allowed charges based on past bills.
- Adjust deductible-subject toggles to match your plan’s rules.
- Click Calculate Breakdown to see totals above the form.
- Export results as CSV or PDF for sharing and comparisons.
Premium share under different usage patterns
When allowed charges stay below the deductible, premiums typically dominate total spending. For example, a $480 premium over 12 months totals $5,760, or $480 per month. If a $150 employer contribution applies, member premiums drop by $1,800 for the year. With low use, small differences in premium support can outweigh small differences in copays.
Deductible and coinsurance mechanics
For deductible-subject services, the calculator applies deductible first, then coinsurance to the remaining allowed amount. If deductible-subject allowed charges are $3,500 with a $1,500 deductible and 20% coinsurance, deductible paid is $1,500 and coinsurance is 20% of $2,000, or $400. If allowed charges are only $900, deductible paid is $900 and coinsurance is $0.
Out-of-pocket maximum as a risk limiter
High utilization scenarios are driven by the out-of-pocket maximum. If cost sharing before the cap reaches $8,200 but the plan’s out-of-pocket maximum is $6,500, member-paid claims are capped at $6,500 and the insurer estimate increases accordingly. Premiums are not capped by the out-of-pocket maximum, so annual budgeting should consider both premium and claims exposure.
Copays, deductible rules, and plan design
Many plans treat office visits and prescriptions as copay-only, while high-deductible designs may make them deductible-subject. The toggles let you model both. Copays are also optionally counted toward the out-of-pocket limit; if your plan excludes them, the member may pay copays in addition to capped deductible and coinsurance. Copays are also limited to the allowed amount in each service bucket.
Using the breakdown for decisions
Run scenarios by changing visit counts, allowed costs, coverage months, and any subsidy or employer support. Compare “member-paid premiums” against “member out-of-pocket paid” to see what drives your cash flow. If you contribute $2,000 pre-tax at a 20% marginal rate, the simplified tax savings estimate is $400. To approximate negotiated rates, use past explanation-of-benefits amounts, not provider charges, because allowed costs determine insurer share and coinsurance in this calculator model. Export CSV for comparisons, and use the PDF snapshot for sharing.
1) What is an “allowed cost” and why does it matter?
Allowed cost is the negotiated amount the plan uses for cost sharing. Deductible, coinsurance, and insurer share are calculated from allowed costs, not provider list prices. Use EOB amounts when possible.
2) Do premiums count toward the out-of-pocket maximum?
Usually, no. Premiums are paid regardless of claims and are not capped by the out-of-pocket limit. This tool keeps premiums separate, then adds member out-of-pocket paid on claims for total cost.
3) What if employer support or subsidies are higher than my premium?
Member premiums are capped at zero. Any excess support is ignored in the calculation because most plans do not pay you the difference. Verify the exact rules of your program.
4) How should I estimate visit and prescription costs?
Start with last year’s claims or EOBs and use typical allowed costs per visit or fill. If you lack history, use conservative averages and test low, medium, and high scenarios to see sensitivity.
5) Why is the insurer-paid portion labeled as an estimate?
Plans can apply special copay rules, exclusions, or separate deductibles by service type. This calculator uses a standard deductible-plus-coinsurance model and copay-only buckets, so the insurer portion is a structured estimate, not a bill.
6) How does the pre-tax savings estimate work?
It multiplies your annual pre-tax contribution by your marginal tax rate to approximate reduced taxes. It’s a simplified view that does not account for contribution limits, payroll taxes, or filing details.