What Is an HDHP? High-Deductible Health Plan Explained

A high-deductible health plan (HDHP) is a type of health insurance with lower monthly premiums in exchange for a higher deductible — the amount you pay out of pocket before your insurance begins covering non-preventive care. HDHPs are defined by the IRS each year with specific minimum deductible and maximum out-of-pocket thresholds. The defining feature that makes HDHPs strategically important: they are the only type of health plan that allows you to open and contribute to a Health Savings Account (HSA). For tech workers at companies like Apple, Google, Meta, and Microsoft — where HDHPs are commonly offered alongside traditional PPO plans at open enrollment — understanding exactly how HDHPs work determines whether you can access the triple-tax advantage of an HSA.

For 2026, a plan qualifies as an HDHP if it has a minimum annual deductible of at least $1,700 for self-only coverage and $3,400 for family coverage, and caps total annual out-of-pocket costs at no more than $8,500 for self-only and $17,000 for family coverage. These figures come from IRS Revenue Procedure 2025-19 and took effect January 1, 2026.

The 2026 HDHP Thresholds

The IRS adjusts HDHP thresholds annually for inflation. Here are the 2026 numbers alongside 2025 for comparison:

A plan must satisfy both thresholds — the minimum deductible and the maximum out-of-pocket — to qualify as an HSA-eligible HDHP. A plan with a $2,000 deductible but a $9,000 out-of-pocket maximum would not qualify in 2026 because it exceeds the out-of-pocket cap.

Note that these out-of-pocket maximums are lower than the ACA's separate out-of-pocket limits for non-grandfathered health plans ($10,600 for self-only and $21,200 for other coverage in 2026). The HDHP thresholds are more restrictive — a plan that meets the ACA limit does not automatically qualify as an HDHP.

How an HDHP Works: Deductible First, Then Coverage

With most traditional health plans — HMOs and PPOs — you pay a copay for doctor visits and certain services even before meeting your deductible. HDHPs work differently: with limited exceptions, you pay the full cost of non-preventive care until you reach your deductible. After that, your insurer begins covering a share of costs through coinsurance. Once you reach the out-of-pocket maximum, the plan covers 100% of covered in-network expenses for the rest of the plan year.

Preventive care is always covered before the deductible. The ACA requires all non-grandfathered plans — including HDHPs — to cover a defined list of preventive services with no cost-sharing, regardless of whether you have met your deductible. Annual physicals, recommended screenings, vaccinations, and certain preventive medications are covered at no charge.

Two 2026 exceptions to the deductible-first rule:

Starting in 2026, two categories of care can be covered before the deductible without disqualifying the plan as an HDHP:

1. Telehealth and remote care. The One Big Beautiful Bill Act, signed July 4, 2025, permanently eliminated the requirement that telehealth services be subject to the HDHP deductible. Plans can cover telehealth visits — doctor calls, mental health sessions, urgent care video appointments — before you meet your deductible. This had been a temporary provision that was repeatedly extended; it is now permanent for plan years beginning on or after January 1, 2026.

2. Direct Primary Care (DPC) arrangements. Membership fees for a qualifying Direct Primary Care arrangement — a flat monthly fee to a primary care provider for unlimited primary care services — do not disqualify a plan from HDHP status, as long as the monthly DPC fee does not exceed $150 for an individual ($300 for arrangements covering more than one person) in 2026.

The Major 2026 Change: ACA Bronze and Catastrophic Plans Are Now HDHPs

Before 2026, only plans specifically designed to meet IRS HDHP criteria qualified for HSA contributions. Most ACA marketplace plans — even those with high deductibles — did not qualify because they covered services like doctor visits with copays before the deductible, violating the HDHP deductible-first requirement.

Starting January 1, 2026, all Bronze and Catastrophic plans purchased through the ACA marketplace automatically qualify as HDHPs — regardless of their benefit design. This change, enacted by the One Big Beautiful Bill Act, means that millions of people who buy their own insurance through state exchanges (including Covered California) can now open and fund an HSA alongside their marketplace plan.

For early retirees in California who use Covered California for health insurance between ages 55 and 65, this is significant: a Bronze plan that was previously incompatible with an HSA is now HSA-eligible in 2026. The ability to continue building an HSA — the most tax-efficient vehicle for healthcare costs in retirement — is now available through marketplace plans that were previously excluded.

HDHP vs. PPO: The Core Tradeoff

The most common choice at open enrollment for tech workers is between an HDHP (often labeled "HSA Plan" or "CDHP" by employers) and a traditional PPO. The tradeoff is straightforward in principle but complex in practice.

HDHPs have lower premiums. The employer-sponsored HDHP typically costs $100–$300 less per month in premiums than the PPO equivalent for the same employer. For a family, the premium difference can be $2,000–$5,000 per year.

HDHPs have higher upfront costs. Until you meet the deductible, you pay the full cost of care — a doctor visit that costs $25 under a PPO copay might cost $150–$200 under an HDHP, billed at the insurer's negotiated rate.

HDHPs unlock the HSA triple-tax advantage. This is the deciding factor for most high earners. The ability to contribute $4,400 (individual) or $8,750 (family) to an HSA in 2026 — with pre-tax contributions, tax-free growth, and tax-free withdrawals for medical expenses — represents a permanent tax benefit that compounds over time. See What Is an HSA? for a full explanation of how this works.

Who benefits from an HDHP:

• Healthy individuals and families with low annual healthcare utilization
• High earners who benefit most from the HSA tax deduction
• People planning to invest their HSA funds long-term rather than spending them down annually
• Early retirees buying marketplace coverage who want to continue building HSA balances

Who may not benefit from an HDHP:

• Families with predictably high healthcare costs — a child with ongoing medical needs, someone managing a chronic condition with frequent specialist visits
• People who cannot afford to self-fund the deductible in an emergency
• Individuals whose employer's PPO premium contribution makes the PPO effectively free or very cheap

How to Determine if Your Plan Qualifies

Your employer or insurance carrier should clearly state whether their HDHP is "HSA-compatible" or "HSA-qualified." If the designation is unclear, check two things:

1. Is the annual deductible at least $1,700 for self-only ($3,400 for family) in 2026?
2. Is the out-of-pocket maximum no more than $8,500 for self-only ($17,000 for family) in 2026?

If both criteria are met, the plan qualifies. However, also verify that the plan does not cover non-preventive, non-telehealth services before the deductible — if it does, it is not HSA-eligible regardless of the dollar thresholds.

Note: having a second health plan that provides first-dollar coverage (such as a spouse's general-purpose FSA or a general HRA) can also disqualify you from contributing to an HSA even if your HDHP technically qualifies. See What Is an HRA? for how HRAs and HDHPs interact with HSA eligibility.

HDHP and the FSA Interaction

A general-purpose Health FSA is not compatible with an HSA. If you enroll in an HDHP and want to contribute to an HSA, you cannot also participate in a full healthcare FSA. The exception is a Limited-Purpose FSA (LPFSA), which covers only dental and vision expenses — this is HSA-compatible. Most tech employers who offer an HDHP with an HSA option also offer a limited-purpose FSA as the alternative spending account. See What Is an FSA? for a full explanation of the FSA types and how this restriction works.

California Note

California residents choosing between an HDHP and a PPO face an additional consideration: California does not recognize HSA contributions as tax-deductible at the state level. The federal triple-tax advantage of an HSA is real and valuable, but the California state tax deduction does not apply. HSA investment earnings are also taxable in California.

Despite this, the federal tax savings alone — plus the permanent, portable nature of HSA funds — make the HDHP-plus-HSA combination worthwhile for most California tech workers in higher income brackets. The math depends on your specific tax situation, healthcare utilization, and employer contributions. See What Is an HSA? for the full California analysis.