Choosing a Health Plan: the Premium Is Not the Cost
Two plans. In a healthy year the cheap one costs $3,500 against $5,900. In a serious year it costs $9,000 against $7,900. They swap places, and nothing about the premium tells you where the crossover is. The only fair comparison is total cost across a year you might actually have.
Two plans, three years
Comparing premiums is how most people choose a health plan. It is also the one comparison guaranteed to mislead, because the premium is the part you pay whether or not you need care.
Two plans:
| Plan A | Plan B | |
|---|---|---|
| Monthly premium | $250 | $450 |
| Deductible | $1,500 | $500 |
| Your share after that | 20% | 10% |
| Out-of-pocket maximum | $6,000 | $2,500 |
Plan A is obviously cheaper. Except:
| Care you need that year | Plan A total | Plan B total | Cheaper |
|---|---|---|---|
| $500 - a healthy year | $3,500 | $5,900 | Plan A |
| $6,000 - a normal year | $5,400 | $6,450 | Plan A |
| $30,000 - a serious year | $9,000 | $7,900 | Plan B |
| $60,000 - a very bad year | $9,000 | $7,900 | Plan B |
They swap places. And nothing in the premium tells you where.
Every figure is from the health insurance cost calculator.
The number that matters most
Look at the bottom two rows. Both plans stop at the same total however much care you need - $9,000 for A and $7,900 for B.
That is the out-of-pocket maximum plus the premiums, and it is the single most important figure on any plan.
It is your worst case. A cheap premium with a high maximum is a bet, and the question is not whether it usually pays off. It is whether you could actually pay if it did not.
If the answer is no, the cheaper premium is a risk you cannot afford, and no amount of likely savings changes that.
How the money actually flows
Worth understanding, because it explains the middle rows.
- You pay everything until the deductible is met
- Then you pay your share - the coinsurance - on everything above it
- Then nothing, once you hit the out-of-pocket maximum
The step people miss is the second one. Reaching your deductible does not make care free. It makes it cheaper. On Plan A you still pay 20% of everything until you have handed over $6,000 in total.
Which means “I’ll have hit my deductible by then” is not the reassurance it sounds like.
Cost all three years
The single most useful habit here: do not ask which plan is cheaper. Ask what each costs in three different years.
- A healthy one, where you barely see a doctor
- A normal one, with a procedure and some appointments
- A bad one, with a serious illness or accident
The right plan is usually the one that is acceptable in all three rather than the best in any single one.
A plan that saves $2,400 in good years and costs $1,100 in bad ones is a reasonable bet if you could cover the bad year comfortably. If a bad year would mean debt, it is not.
The one real argument for a high deductible
A qualifying high-deductible plan can be paired with a health savings account - the only account untaxed going in, growing, and coming out for medical costs.
That treatment is genuinely valuable, and for someone who can comfortably cover the deductible it often outweighs the extra risk. The HSA guide shows what it is worth.
The condition is the same as before: can you actually pay the deductible if it happened tomorrow? If yes, the combination is strong. If no, the tax advantage does not rescue a bet you cannot afford.
Before choosing
- Cost both plans across three years, not one.
- Find the worst case - premiums plus the out-of-pocket maximum - and ask whether you could pay it.
- Check the coinsurance, not just the deductible.
- Check your doctors and medications are covered. A cheaper plan with the wrong network is not cheaper.
- If considering a high deductible, check you could cover it, then look at the HSA.
Compare your own options in the health insurance cost calculator - it prices both plans across whatever kind of year you enter.
Common questions about health insurance cost
Why is the cheapest premium often not the cheapest plan?
Because the premium is only the part you pay whether or not you need care. A low premium usually comes with a high deductible, so a year with real medical needs costs far more. On the plans compared here, the cheaper-premium plan costs $1,100 less in a healthy year and $1,100 more in a serious one.
What is the out-of-pocket maximum?
The most you can be made to pay in a year, after which the plan covers everything. It is the single most important number on any plan because it is the worst case. A low premium with a high maximum is a bet - make sure you could pay if you lost it.
How should I compare plans?
Cost them across three years: a healthy one, a normal one, and a bad one. The right plan is usually the one that is acceptable in all three rather than the best in any single one.
What is coinsurance?
The share you keep paying after the deductible is met, often around a fifth. So reaching your deductible does not make care free - it makes it cheaper. It continues until you hit the out-of-pocket maximum.
Does a high-deductible plan have any advantage?
One significant one: it can usually be paired with a health savings account, the only account untaxed going in, growing and coming out. If you can genuinely afford the deductible, that treatment can outweigh the extra risk.