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Health Insurance Cost-Sharing Calculator

Apply entered in-network deductible, coinsurance, copays, and out-of-pocket maximum terms to an entered allowed-charge scenario, plus premiums.

Use this result well

Inputs that matter
Entered monthly premium, annual covered in-network allowed charges, applicable deductible, coinsurance, copays/other cost sharing, and in-network out-of-pocket maximum
Output to expect
Annual premiums, modeled deductible/coinsurance, uncapped and capped cost sharing, amount limited by the entered maximum, total scenario, and monthly budget average
How it works
Applies entered SBC-style cost sharing to an entered allowed-charge scenario, caps only modeled in-network cost sharing, and keeps premiums outside the cap
  • Match the exact SBC and plan documents for benefit year, network, covered services, separate medical/drug or individual/family accumulators, copay timing, and the applicable OOP maximum.
  • Premiums, non-covered care, out-of-network charges, balance bills, subsidies, eligibility, utilization, prior authorization, referrals, prescriptions, HSA status, and actual claims remain outside the model.

Choose your path

Built around the job you need to finish

Apply entered SBC-style in-network cost sharing to an entered allowed-charge scenario while keeping premiums and excluded costs outside the entered maximum.

Marketplace shopper comparing SBC scenarios

Use matching covered in-network allowed-charge assumptions across plans.

Copy premium, deductible, coinsurance, copays, and OOP maximum from each current SBC and rerun the same allowed-charge scenario.

Compares arithmetic without treating premium alone or one scenario as total future cost.

Family with separate accumulators

Recognize when a single simplified accumulator is insufficient.

Check individual/family, medical/drug, service-specific, and network accumulators before deciding whether the entered terms describe the scenario.

Stops rather than mixing incompatible deductibles or OOP limits.

Person expecting out-of-network or non-covered care

Keep amounts outside the in-network cap visible as omitted.

Use the bounded in-network model only, then separately review balance billing, non-covered services, authorization, referral, formulary, and network facts.

Does not rely on the entered OOP maximum as a universal spending ceiling.

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Reference & details

How it works

Start With Covered In-Network Allowed Charges

Enter a scenario already limited to covered services at plan allowed amounts. Utilization, network, medical necessity, authorization, formulary, and benefit classification are external.

Charges after modeled deductible = max(0, entered allowed charges − deductible applied)

Apply Entered Cost Sharing

The model applies the deductible up to entered charges, then entered coinsurance to the remainder, then adds entered copays and other cost sharing.

Uncapped cost sharing = deductible applied + coinsurance + entered copays/other cost sharing

Cap Only Eligible In-Network Cost Sharing

The entered in-network out-of-pocket maximum caps modeled cost sharing; premiums are added afterward. Costs the plan excludes from the cap remain outside the model.

Scenario total = 12 × monthly premium + min(uncapped cost sharing, entered OOP maximum)

Updated: August 2026

Example Scenarios

Apply a $2,500 deductible and 20% coinsurance to $12,000 of entered allowed charges, plus $600 other cost sharing and a $7,000 OOP maximum.

Monthly Premium: $475Allowed Charges: $12,000Deductible: $2,500Coinsurance: 20%Other Cost Sharing: $600OOP Maximum: $7,000

Shows $5,000 modeled cost sharing, $5,700 annual premiums, and $10,700 premium-plus-cost-sharing scenario.

Use $1,000 allowed charges with a $2,500 applicable deductible.

Allowed Charges: $1,000Deductible: $2,500

Applies no more than $1,000 of deductible and no coinsurance to those charges.

Use cost-sharing inputs whose uncapped total exceeds the exact in-network maximum.

Uncapped Cost Sharing: $8,400OOP Maximum: $7,000

Caps modeled in-network cost sharing at $7,000 while keeping premium and excluded costs outside the cap.

FAQ

No. Premiums and the modeled in-network cost sharing are included, but non-covered services, out-of-network care, above-allowed charges, separate accumulators, and other omitted costs can remain.

Use the exact plan's current SBC, Uniform Glossary, quote or enrollment record, and full plan documents. Match benefit year, enrollment tier, network, and service category.

HealthCare.gov states premiums are outside the in-network covered-service out-of-pocket maximum. The model therefore adds them after applying the entered cap.

No. Premium tax credits, cost-sharing reductions, employer offers, Medicaid/CHIP, special enrollment, and HSA eligibility require separate current analysis.

Yes, but rerun the same documented allowed-charge scenario and align enrollment tier, networks, covered services, medical/drug and individual/family accumulators, copay timing, and all plan terms.

About Health Insurance Cost-Sharing Calculator

Use one plan's current Summary of Benefits and Coverage to enter premium and simplified in-network cost-sharing terms, then apply them to an entered annual allowed-charge scenario. The model caps only the entered in-network cost sharing and adds premiums outside that cap. It does not predict care, determine eligibility or subsidies, classify services, or include non-covered, out-of-network, or above-allowed charges.