What is a High-Deductible Health Plan (HDHP)?

A high-deductible health plan (HDHP) is health insurance that pairs a higher annual deductible with a cap on what you can pay out of pocket for covered care. In exchange for paying more before coverage kicks in, you usually pay a lower monthly premium for an HDHP.

Some HDHPs can be paired with a health savings account (HSA), which is where a lot of the appeal comes from. But being on an HDHP doesn't automatically make you eligible to contribute to one. The health insurance plan has to qualify, and so do you. Those are two separate tests, and it’s common for people to get tripped up by the second one.

There's also a persistent myth worth clearing up early: HDHPs aren't only for young, single, healthy people. Once you add up premiums, cost sharing and any employer HSA contribution, an HDHP can be the cheaper option more often than you might expect—including in years when you use a fair amount of care. We'll work through the numbers below.

How does an HDHP work?

Before you meet your deductible, you generally pay the insurance plan's negotiated rate for services. Once you've met it, you and the plan share covered costs through coinsurance or copayments. And once you hit your out-of-pocket maximum, the plan generally covers the rest of the plan year, as long as network and coverage rules are met.

Below are the five most important terms to understand about your HDHP plan:

• Premium: What you pay to keep coverage active. With employer coverage, your employer may pay part of it.
• Deductible: What you pay for covered care before the plan starts paying for services subject to the deductible.
• Copayment: A fixed amount you pay for a covered service or prescription.
• Coinsurance: A percentage of a covered cost you pay, usually after meeting the deductible.
• Out-of-pocket maximum: The most you'll pay for applicable covered expenses in a plan year. Premiums don't count toward it¹.

That last one deserves a closer look, because "maximum" sounds more protective than it is. Your out-of-pocket maximum generally excludes premiums, noncovered care, balance-billed charges where they're permitted and certain out-of-network expenses. For plans with a network, out-of-network deductibles and expenses generally aren't counted toward the HDHP out-of-pocket limit. So it caps a category of spending, not your total spending.

Actual costs depend on the plan, so read the Summary of Benefits and Coverage rather than assuming every HDHP behaves the same way.

HDHP deductible and out-of-pocket limits

"High-deductible health plan" is a legal and tax classification, not a description.² A plan doesn't qualify just because its deductible feels high—it has to clear a floor on the deductible and stay under a ceiling on out-of-pocket expenses.

These are the thresholds for calendar year 2026:³

 

These figures are adjusted annually, so check current IRS guidance before you make an HSA contribution based on them.

Special treatment for certain individual-market plans

Beginning January 1, 2026, Bronze and Catastrophic plans offered as individual coverage through an Exchange are treated as HDHPs even when they don't meet the ordinary minimum deductible and out-of-pocket requirements. An identical Bronze or Catastrophic plan offered outside an Exchange may get the same treatment.⁴

This is a real change, and it means some plans that wouldn't have qualified a year ago now do. Because the general rules and the individual-market exception work differently, look for "HSA-eligible" in your plan materials. If the language isn't clear, ask your health insurance provider to confirm it in writing before you open or fund an account.

What can an HDHP cover before the deductible is met?

An HDHP may cover certain preventive care and other permitted health benefits before you meet your deductible.⁵ Allowed isn't the same as required, though. Coverage still varies plan to plan.

Depending on the plan and the applicable rules, pre-deductible coverage may include:

• preventive health evaluations
• immunizations and vaccinations
• certain screenings
• routine prenatal and well-child care
• some programs meant to prevent illness

The rules allow pre-deductible coverage for telehealth and other remote care. They also allow coverage for certain chronic-condition treatments and other benefits.⁶

Beware: Your doctor may call a service preventive when it doesn't meet the plan's or the IRS's definition of preventive care.⁷ A standard screening colonoscopy that turns into a diagnostic one mid-procedure is a classic example.

So before you go, check whether the service is covered before the deductible, whether you need an in-network provider, whether related tests or procedures get billed separately and whether prior authorization is required.

Prescriptions work the same way. Some are subject to the deductible; others may qualify for pre-deductible coverage.

Advantages and disadvantages of an HDHP

The core advantage vs. disadvantage of an HDHP is simple: a lower premium in exchange for greater exposure before the deductible applies. Everything else is detail on top of that.

Advantages of an HDHP

• A lower premium. An HDHP may cost less per month than the alternatives, which means less taken from each paycheck. That's the whole selling point, but a lower premium doesn't guarantee a lower total cost, because the deductible, coinsurance, copayments and prescriptions all still count.
• Access to an HSA. An HSA-eligible HDHP lets an eligible person contribute to a health savings account. If your employer contributes as well, that money offsets your deductible exposure directly, and it's often the factor that determines which plan is actually cheaper.
• A cap on covered out-of-pocket costs. A qualifying HDHP limits what you'll pay for applicable covered care during a plan year, which defines your downside risk. Just remember what sits outside that cap.
• HSA money is yours to keep. What's left in an HSA carries over for future qualified medical expenses. The account doesn't reset in December, and it doesn't belong to your employer.⁸ Its value depends on how much is in it, as well as on account fees and investment options.

Disadvantages of an HDHP

• Timing risk. A big bill in January is harder to absorb than the same bill in November, because you haven't had time to build up HSA savings. The deductible is an annual number, but expenses don't arrive on an annual schedule.
• Recurring care adds up fast. Regular specialist doctor visits, therapy, lab work, imaging or maintenance prescriptions can pile up before you ever reach the deductible. If that describes your year, a plan with a higher premium and lower cost-sharing may genuinely suit you better.
• Comparisons are harder. The premium doesn't tell you which plan costs less overall. You also need the deductible, copayments, coinsurance, out-of-pocket maximum, the expenses that don't count toward it, prescription coverage, any employer HSA contribution, the provider network and a realistic estimate of how much care you'll use.
• The temptation to skip care. A high deductible can lead some people to put off appointments they should keep. Before you postpone something because of cost, check whether it qualifies for pre-deductible coverage and talk to a health care professional about any medical issues.

How to compare an HDHP with another plan

When comparing an HDHP with another health plan, compare total potential cost, coverage and financial risk. The premium is one of nine factors to consider.

Review the plan documents

For each option, pull the Summary of Benefits and Coverage, the premium, the provider directory, the prescription formulary, the HSA eligibility language, your employer's HSA contribution details and if there are any referral and prior authorization rules.

Then confirm the specifics that actually affect you:

• Your doctors, hospitals and pharmacy are in network
• Your prescriptions are covered and at what cost-sharing tier
• Which services, if any, need prior authorization

Note which expenses fall outside the out-of-pocket maximum, since those are the ones that can surprise you.

Estimate total annual cost

The arithmetic is straightforward to calculate total annual health care costs:

Annual premiums + expected medical costs subject to the deductible, copayments and coinsurance − employer HSA contributions = estimated annual cost

Run it at a few different levels of care, because the answer changes depending on the health year you have. Here's what that looks like with two hypothetical plans:

The pattern is the interesting part. The HDHP wins comfortably in a light year, still wins by a wide margin in a moderate one, and only loses in a catastrophic year, by $350. If the member had contributed at the maximum amount to their HSA, they would have the funds to cover the $350 and do so on a pre-tax basis. With these two plans, the crossover point is around $18,250 in covered care. Below that, the HDHP costs less.

Is an HDHP right for you?

An HDHP may be a good fit if its total potential cost is competitive and you can cover expenses before you meet the deductible. That's it—the rest is arithmetic. It isn't automatically the right answer for healthy people, and it isn't automatically wrong for families or people who need regular care.

Before choosing a high-deductible health plan

Start with the Summary of Benefits and Coverage, then work through the provider directory, prescription formulary, prior authorization rules and HSA eligibility language.

Run the total annual cost at a few levels of care and subtract any employer HSA contribution. Then answer the question that actually decides it: Could you pay a large covered expense before meeting the deductible without derailing the rest of your finances?

For plan-specific coverage questions, contact your health insurance provider or your employer's benefits team. For HSA eligibility or tax questions, check current IRS guidance or talk with a qualified tax professional.

To sign up for an HSA account, or if you already have an HSA with Associated Bank and have questions about your account, schedule an online appointment or contact Participant Services at 800-270-7719.

1.https://www.irs.gov/publications/p969#en_US_2025_publink1000204086
2.https://www.benefitdesignltd.com/p/hsa
3.https://www.fidelity.com/learning-center/smart-money/hsa-contribution-limits
4.https://www.dbsbenefits.com/blog/irs-expands-hsa-compatibility-what-you-should-know-for-2026/
5.https://www.goodrx.com/insurance/hdhp/the-pros-and-cons-of-high-deductible-health-plans
6.https://www.mercer.com/en-us/insights/law-and-policy/irs-expands-predeductible-preventive-care-for-hsa-qualifying-health-plans/
7.https://www.nbcnews.com/healthmain/consumers-beware-not-all-health-plans-cover-doc-visits-deductible-2d11794861
8.https://www.truemed.com/blog/does-an-hsa-roll-ove
9.https://www.wexinc.com/resources/blog/hdhp-vs-traditional-health-plan-ppo/
10.https://us.bbrown.com/blog/medicare-hsa-contributions-a-guide-for-employers-and-near-retirees