Everything that governs your HSA in 2026 — contribution limits, HDHP requirements, the triple tax advantage, qualified expenses, and the rules people miss.
To contribute to an HSA you must be covered by a qualified high-deductible health plan (HDHP), have no disqualifying other coverage, not be enrolled in Medicare, and not be claimable as a dependent. For 2026, an HDHP means a deductible of at least $1,700 (self-only) or $3,400 (family), with out-of-pocket maximums no higher than $8,500 / $17,000 (Rev. Proc. 2025-19).
One 2026-friendly exception: thanks to OBBB §71306, an HDHP can cover telehealth before you meet your deductible without breaking your HSA eligibility — permanently.
The 2026 limits are $4,400 for self-only coverage and $8,750 for family coverage (Rev. Proc. 2025-19). If you're 55 or older, add a $1,000 catch-up contribution. Limits apply across all your HSAs combined, and employer contributions count against them.
Contributions for a tax year can be made until the tax-filing deadline the following April — one of the few retroactive tax moves available.
HSAs are the only account with three tax breaks stacked: contributions are tax-deductible (or pre-tax through payroll, which also skips FICA), growth is tax-free, and withdrawals for qualified medical expenses are tax-free. No other account — not a 401(k), not a Roth IRA — does all three.
Qualified medical expenses are defined by IRC §213(d) and cataloged in IRS Publication 502: care that diagnoses, treats, mitigates, or prevents disease. Doctor visits, prescriptions, dental and vision care, OTC medicines (since the CARES Act of 2020), menstrual products, and much more.
The line that trips people up: expenses for GENERAL HEALTH — gym memberships, supplements, wellness apps — are not qualified, unless a Letter of Medical Necessity ties them to treating a specific diagnosed condition. Candor's eligibility database covers 160+ items with citations.
You can only reimburse expenses incurred AFTER your HSA was established. An expense from the year before you opened the account never becomes reimbursable — which is why opening an HSA (even with a small deposit) as early as possible matters. Candor asks for your establishment date once and flags every receipt automatically.
If you're HSA-eligible on December 1, you may contribute the full annual limit for that year — but only if you stay eligible through the end of the NEXT year (the 'testing period'). Fail it and the extra contributions become taxable income plus a 10% penalty. Powerful, but brittle.
Non-qualified withdrawals before 65 are taxed as income PLUS a 20% penalty. After 65, non-qualified withdrawals are just ordinary income (like a traditional IRA). Excess contributions carry a 6% excise tax every year until corrected.
Candor vaults your receipts, tracks your Claimable Balance, and answers eligibility questions with IRS citations — free.
Start your shoebox — freeInformational only — not tax, legal, or medical advice. Consult a qualified tax professional about your situation. Rules version 2026-07-16, last verified July 2026.