Which Costs Less: A Health Maintenance Organization, a Preferred Provider Organization, or a High-Deductible Plan With a Health Savings Account

8 min read · Last updated September 8, 2026

A PPO plan costs more upfront – $9,818 a year on average for single coverage versus $8,620 for a high-deductible plan, per the 2025 KFF Employer Health Benefits Survey – but it covers out-of-network care and skips referrals, while an HMO costs the least and offers the narrowest network, and a high-deductible plan paired with an HSA trades a higher deductible for tax-free savings of up to $4,400 in 2026.

In this article

• Denise’s three options
• What each plan type actually means
• The numbers side by side
• Which plan fits your year
• Frequently asked questions

Denise’s three options

Three health plan types show up in almost every open enrollment packet: an HMO, a PPO, and a high-deductible plan paired with a Health Savings Account (HSA) – and which one actually costs less depends on how much healthcare you expect to use this year, not just the premium listed on the enrollment screen. Denise Coleman is choosing between exactly these three options from her employer, with the PPO priced at $9,818 a year for her coverage alone and the high-deductible option letting her set aside up to $4,400 tax-free in 2026. The sticker price on each plan tells only part of the story.

Open enrollment forces this decision on a fixed clock, usually once a year, and switching mid-year outside a qualifying life event typically isn’t an option. That makes the comparison worth doing carefully rather than defaulting to whichever plan was picked last year or whichever one has the lowest number on the enrollment portal’s first screen – premium, deductible, and out-of-pocket maximum each tell a different part of the story, and none of them alone answers “which plan actually costs less for me.”

What each plan type actually means

A Health Maintenance Organization (HMO) is, per HealthCare.gov’s own glossary, “a type of health insurance plan that usually limits coverage to care from doctors who work for or contract with the HMO,” and it “generally won’t cover out-of-network care except in an emergency.” HMOs typically require picking a primary care doctor who refers you to specialists within the network.

A Preferred Provider Organization (PPO) “contracts with medical providers, such as hospitals and doctors, to create a network of participating providers.” You pay less inside that network, but unlike an HMO, you can also see out-of-network doctors and specialists without a referral – just at a higher cost.

A high-deductible health plan (HDHP) is defined by its numbers, not its network: to qualify as an HDHP in 2026, the plan’s deductible must be at least $1,700 for self-only coverage or $3,400 for family coverage, and its total yearly out-of-pocket maximum can’t exceed $8,500 self-only or $17,000 family, per IRS Publication 969. Pairing an HDHP with a Health Savings Account (HSA) lets you set aside up to $4,400 (self-only) or $8,750 (family) in 2026, tax-free going in, tax-free coming out for qualified medical expenses, and – unlike a Flexible Spending Account – the balance never expires.

One number worth naming up front: the premiums KFF reports are the total premium, meaning the combined employer and worker share, not just what comes out of your paycheck. Employers typically cover the majority of that total, so what actually shows up on your pay stub is a fraction of the $9,818 or $8,620 figures below. The ratio between the plan types still holds, though – whatever share of the premium you personally pay, it runs meaningfully lower for the high-deductible plan than the PPO.

The numbers side by side

Factor	HMO	PPO	HDHP + HSA
Average annual premium, single coverage	Not in KFF’s public survey summary; the $9,325 all-plan average includes HMOs alongside every other plan type	$9,818 (KFF 2025)	$8,620 (KFF 2025)
Network rules	In-network only; no out-of-network coverage except emergencies (HealthCare.gov)	In-network and out-of-network, at a higher cost out-of-network (HealthCare.gov)	Depends on the underlying plan type it’s paired with
Primary care / referrals	Typically requires a primary care doctor and referrals to see specialists	No referral required	Varies with the underlying plan
2026 minimum deductible to qualify as this plan type	Not applicable	Not applicable	$1,700 self-only / $3,400 family (IRS Pub 969)
Tax-advantaged savings built in	None	None	Up to $4,400 self-only / $8,750 family in 2026 (IRS)
Best for	Lowest premium, comfortable with an in-network-only primary doctor	Flexibility to see out-of-network specialists without a referral	Generally healthy, wants to bank the premium savings tax-free

Picture two versions of Denise’s year. In a low-usage year – a routine physical and nothing else – the high-deductible plan saves her roughly the $1,200 premium gap outright, since she never comes close to its $1,700 self-only deductible, and whatever she does spend can come straight out of her tax-free HSA. In a high-usage year – surgery, an emergency room visit, a new diagnosis – she could owe the full $1,700 deductible plus coinsurance up to the plan’s $8,500 out-of-pocket maximum, and her $4,400 HSA contribution covers most but not all of that gap before she’d need to pay the rest with already-taxed money. The PPO’s own deductible and out-of-pocket maximum aren’t broken out separately in the KFF summary data above – they vary by employer – so the real comparison for a high-usage year has to come from her actual plan documents, not the averages.

Which plan fits your year

Choose the HMO if your top priority is the lowest premium and you’re comfortable keeping every doctor – primary care and specialists – inside one network with a referral in between. Choose the PPO if you want to see specialists without a referral, or you have an out-of-network doctor you’re not willing to give up, and you can absorb roughly $1,200 more a year in premium than a high-deductible plan, based on the 2025 KFF averages. Choose the high-deductible plan with an HSA if you’re generally healthy, you can cover the higher deductible if something happens, and you want to bank the difference – a $4,400 HSA contribution in 2026 comes off your taxable income before you even spend it.

None of these choices are permanent past the next open enrollment window, so the honest way to decide is to compare this year’s expected usage against last year’s actual bills, not against a guess. A year with a planned surgery, a new baby, or a chronic condition needing regular specialist visits changes this math substantially in the PPO’s favor; a year that looks like the last several – a checkup and not much else – tends to favor whichever plan has the lowest premium, HSA-eligible or not.

Frequently asked questions

Can I use HSA money for anything, or only medical expenses? Withdrawals for qualified medical expenses are always tax-free. After age 65, you can withdraw HSA funds for any purpose without penalty, though non-medical withdrawals are then taxed as regular income – which makes an HSA function partly like an extra retirement account once you reach that age.

Does HSA money expire if I don’t use it by the end of the year? No. Unlike a Flexible Spending Account, HSA balances roll over every year with no “use it or lose it” deadline, and the account stays yours even if you switch jobs or health plans later.

Do PPO plans really never require a referral? Correct – PPO plans let you see any specialist, in or out of network, without a referral from a primary care doctor. You pay more for staying in-network and even more for going outside it, but you don’t need permission first.

Is a high-deductible plan a bad idea if I have a chronic condition? Not automatically, but it deserves real math first. Add up what you spent on care last year, compare it to the HDHP’s deductible and out-of-pocket maximum, then check whether your HSA contribution plus any employer HSA contribution would cover the gap before assuming the lower premium is the better deal.

What happens if I pick an HMO and need a specialist my network doesn’t have? Your primary care doctor can typically refer you within the network, but if no in-network specialist can treat your condition, ask your plan about an out-of-network exception – some HMOs grant one when medically necessary, though it isn’t guaranteed.