Key takeaway
Choose a plan by expected usage and the out-of-pocket max, not the premium; the cheapest monthly price can cost the most.
Key takeaway
Health insurance has four numbers that decide your real cost: premium, deductible, copay, and out-of-pocket max. The cheapest premium is often the most expensive plan if you actually use care. Pick the plan by your expected usage, not the monthly price.
The four numbers that matter
- Premium: what you pay every month just to have the plan, whether you see a doctor or not.
- Deductible: what you pay out of pocket before insurance starts sharing costs.
- Copay or coinsurance: your share of each visit or service after the deductible is met.
- Out-of-pocket maximum: the most you pay in a year; after that, the plan pays 100%.
A plan with a low premium usually has a high deductible, and vice versa. The Health Insurance Calculator totals your cost across these for a typical year of usage.
How usage flips the answer
A worked example for two plans:
- Plan A: $300/month premium, $6,000 deductible, low coinsurance.
- Plan B: $520/month premium, $1,000 deductible, moderate coinsurance.
If you rarely see a doctor, Plan A costs about $3,600 a year in premiums and little else. Plan B costs $6,240 before any care. Plan A wins.
But if you have a $10,000 medical year: Plan A is $3,600 + $6,000 deductible + some coinsurance ≈ $10,000+. Plan B is $6,240 + $1,000 + coinsurance, capped near its out-of-pocket max—often less. For a heavy-usage year, the "expensive" plan is cheaper. The calculator makes this break-even visible.
The mistake everyone makes: choosing by premium alone
People pick the lowest monthly payment and are shocked by the deductible when care arrives. The premium is the only number you see every month; the deductible is the number that hurts once.
Other errors:
- Ignoring the network: out-of-network care can be uncovered entirely.
- Forgetting the out-of-pocket max: it is your true worst case and should anchor the decision.
- Overlooking an HSA: high-deductible plans often pair with a tax-advantaged HSA that softens the deductible.
- Not counting prescriptions: a cheap plan that excludes your medication is not cheap.
How to choose
- Estimate your yearly usage—few visits, a couple, or a chronic condition.
- Run both plans through the Health Insurance Calculator at that usage.
- Anchor on the worst case: compare out-of-pocket maximums plus premiums.
- Check the network and drug list before anything else.
- Use an HSA if offered: it lowers the effective cost of a high-deductible plan.
Related next steps
Compare plans with the Health Insurance Calculator. To fund a high deductible, the HSA Limits Calculator shows the tax-advantaged cap, and the Budget Calculator fits the premium into your monthly plan.