Open enrollment packets are landing in mailboxes and inboxes right now, and millions of Americans are about to make the same mistake they made last year: picking the plan with the lowest premium and hoping for the best.
The high deductible health plan, or HDHP, has become the default option at a huge share of employers, and the math is less friendly than it looks.
Your monthly premium drops, sometimes by $100 or more compared to a traditional PPO.
In exchange, you pay for almost everything out of pocket until you hit your deductible — which in 2025 can run $1,650 for an individual and $3,300 for a family before a single dollar of coverage kicks in, according to IRS limits for HSA-eligible plans.
Many employer plans set the bar even higher.
It's the gap between the deductible and real life.
A single ER visit for a kid's broken arm can run $2,000 to $4,000.
A few months of a name-brand prescription can wipe out a thousand dollars before spring.
If you don't have that cash sitting in a savings account, the "cheaper" plan quietly turns into credit card debt at 22% interest.
The one thing that makes an HDHP work is the health savings account, or HSA.
It's the only account in the tax code with a triple tax advantage: contributions go in pre-tax, growth is tax-free, and withdrawals for qualified medical expenses come out tax-free.
If your employer chips in — many add $500 to $1,500 a year — that's free money you should not leave on the table.
A 2025 survey from the Employee Benefit Research Institute found that a large share of HSA accounts hold less than $1,000, meaning the account exists on paper but won't cover a real medical event.
An HSA with $400 in it is not a safety net.
Before you click "confirm" on your benefits portal, do three things.
First, add up your premium savings for the year and compare it to your deductible.
If the gap is small, the HDHP may not be worth it.
Second, check whether your regular prescriptions and doctors are covered — surprise out-of-network bills are where HDHPs hurt most.
If you can't cover the deductible without borrowing, a traditional plan with a higher premium may cost you less in the long run.
One more move worth considering: ask HR whether your employer offers a "co-insurance" or "copay" version alongside the HDHP.
Many companies bury the alternative plan in the portal because the HDHP saves them money.
The bottom line is that a high deductible plan isn't automatically bad or good.
It's a bet that you won't have a big medical year, and the house usually wins that bet eventually.
If your employer offers a match into an HSA, take it, fund it every paycheck, and treat it like a car repair fund you hope never to touch.
Final Thoughts
If they don't, run the real numbers before you sign — the cheapest premium on the page is rarely the cheapest plan for your family.