Open enrollment season has arrived, and millions of workers are staring at two options on a benefits screen: a traditional health plan with a $1,500 deductible, or a high deductible health plan with a $4,000 deductible and a lower monthly premium.
High deductible health plans, or HDHPs, now cover more than half of American private-sector workers, according to KFF's annual employer survey.
The pitch is straightforward: pay less each paycheck, and if you stay healthy, you keep the difference.
The catch is what happens when you don't stay healthy.
Under IRS rules for 2025, a plan qualifies as high deductible if the deductible is at least $1,650 for individual coverage or $3,300 for family coverage.
Out-of-pocket maximums can run as high as $8,300 for individuals and $16,600 for families.
That's real money for a household earning the median income.
It's the gap between the deductible and the out-of-pocket maximum, where coinsurance kicks in.
A single ER visit for a broken arm can run $3,000 or more before insurance pays a dime beyond the negotiated rate.
A surprise MRI, a specialist referral, or a week of antibiotics after a bad infection can blow through a paycheck.
Health savings accounts are supposed to soften the blow.
Contributions are tax-deductible, grow tax-free, and come out tax-free for qualified medical expenses.
But here's the problem: the average American household doesn't have $4,000 sitting around to fund an HSA.
Vanguard's 2024 report on HSA balances found that most account holders contribute less than $1,000 a year, and many treat the account as a checking account rather than an investment vehicle.
Research published in the Journal of Consumer Research found that people on high deductible plans skip care they need, not just care they don't.
They delay colonoscopies, put off blood pressure medication, and let infections fester.
The savings on premiums can evaporate the moment a condition becomes chronic.
Many have added "deductible relief" programs, telehealth copays, and transparent pricing tools to keep workers from avoiding care altogether.
Some have introduced tiered plans that look like HDHPs but quietly cover preventive visits and generic prescriptions before the deductible.
Read the summary of benefits carefully — the difference between a good HDHP and a bad one often hides in the fine print.
For anyone choosing between plans this fall, the calculation isn't just premium versus premium.
Add up your expected prescriptions, any planned procedures, and a realistic estimate of urgent care visits.
Multiply the difference in premiums by 12.
If the HDHP saves $1,200 a year but your family typically spends $2,500 on care before the deductible is met, the cheaper plan isn't cheaper.
One more thing worth checking: whether your employer contributes to your HSA.
Some do, and a $500 or $1,000 seed contribution changes the math significantly.
Ask HR directly — it's not always advertised.
The bottom line is that high deductible plans aren't inherently bad.
They work well for healthy people with savings and poorly for everyone else.
The real question isn't which plan has the lower premium.
Final Thoughts
It's which plan you can actually afford to use.