b2KIT

Health Insurance Cost Comparison

Compare health insurance plans by premium, deductible, copay, coinsurance, and out-of-pocket max with total cost modeling by usage level.

Tested tool guide Tested browser tools Checked August 16, 2026

What Health Insurance Cost Comparison does and how it behaves

Health Insurance Cost Comparison places recurring premiums and expected cost sharing on the same basis, then compares plans at a selected healthcare usage level. For each plan, it considers the premium, deductible, copay, coinsurance, and out-of-pocket maximum when modeling member spending. The common surprise is that the lowest-premium plan is not necessarily the lowest-cost plan once care is used. Conversely, a high deductible is not automatically worse if its premium savings outweigh the additional cost sharing under the scenario entered.

How the result is produced

1

Align the scenarios

Premiums form the fixed portion of each plan's modeled cost, while the selected usage level supplies the care scenario. The calculator evaluates the entered plan terms for that same scenario. Comparisons are meaningful only when premium frequency, coverage tier, usage level, and covered population are aligned, such as annual employee-only figures for every plan.

2

Combine cost components

Deductible, copay, and coinsurance inputs represent different ways the member shares covered costs. The out-of-pocket maximum limits eligible cost sharing recognized by the model, but it does not limit premiums. The resulting total therefore combines premium expense with the modeled member share, subject to the maximum and other plan terms entered.

Good uses

  • Compare employer plans during open enrollment when one option has lower premiums but a higher deductible and another reverses that tradeoff.
  • Evaluate marketplace plan candidates under the same expected usage level instead of ranking them by premium alone.
  • Stress-test a high-usage year to see how each plan's out-of-pocket maximum changes the modeled total and potential financial exposure.

Limits and checks

  • Do not read the out-of-pocket maximum as the most you could spend for the entire year. Premiums are added separately, and actual plans may exclude out-of-network care, noncovered services, balance bills, or other amounts from the costs credited toward that maximum.
  • Individual and family deductibles can accumulate differently. Embedded individual limits, aggregate family limits, separate prescription deductibles, and per-person out-of-pocket maximums may not be fully represented by one value for each plan term.
  • Copays and coinsurance do not follow one universal sequence. A plan may apply a copay before the deductible, waive the deductible for certain care, or use different coinsurance by service. Simplified inputs cannot reproduce every benefit schedule.

Common questions

Does the lowest modeled total identify the best plan?

No. The result compares the costs represented by the entered scenario; it does not make provider availability, drug formulary coverage, referral rules, claim exclusions, service quality, or cash-flow timing equivalent. It also cannot value an HSA contribution or tax effect unless that amount is represented in the inputs. Use the total as one decision factor, not a plan recommendation.

Why can the modeled total exceed the out-of-pocket maximum?

An out-of-pocket maximum is not a ceiling on the entire annual cost of insurance. Premium payments sit outside that limit, so premiums remain in the modeled total even after eligible cost sharing reaches the maximum. Actual spending can also exceed the displayed maximum for items the plan does not count toward it, depending on the contract.

References and verification

The behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.

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