For 2027 the IRS set the HSA contribution limit at $4,500 for self-only coverage and $9,000 for family coverage under Revenue Procedure 2026-24, up from $4,400 and $8,750 in 2026. Savers age 55 and older can add a $1,000 catch-up on top of either limit.
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About the Author
Sujit KarkiFinance Researcher & Market Analyst
Independent finance researcher and market analyst with expertise in macroeconomics, equity markets, and personal finance. I help regular investors make better-informed decisions through rigorous, data-driven analysis.
Open enrollment season means the same email lands in every inbox: pick your health plan, pick your pretax account, don't think about it too hard. I'd push back on that last part. The HSA-versus-FSA decision compounds for years if you get it wrong, and 2027's numbers just gave HSA savers a real bump.
Key Takeaways
2027 HSA limits are already official: $4,500 self-only and $9,000 family, up from $4,400 and $8,750 in 2026, plus a $1,000 catch-up at 55+.
An HSA requires enrollment in a qualifying high-deductible health plan (HDHP) — you can't choose one independent of your plan type.
HSA money never expires and stays yours even if you change jobs or health plans — it's the opposite of use-it-or-lose-it.
2026's FSA limit is $3,400 with up to $680 allowed to carry over; the 2027 FSA limit hadn't been announced as of this writing.
The right choice depends less on which account is 'better' in the abstract and more on whether your employer even offers an HDHP option.
What actually happened
The IRS confirmed 2027 HSA contribution limits in Revenue Procedure 2026-24, released May 29, 2026 — notably early and notably official, unlike the tax-bracket projections everyone's still guessing at for the same year. Self-only HSA coverage can now shelter up to $4,500 pretax, up from $4,400 in 2026. Family coverage jumps to $9,000, up from $8,750. The 55-and-older catch-up contribution stays fixed at $1,000, a figure that — unlike the base limits — isn't indexed for inflation and hasn't moved in years.
The 2027 minimum deductible and out-of-pocket maximum for a plan to qualify as an HDHP also moved: a minimum deductible of $1,750 self-only / $3,500 family, and an out-of-pocket cap of $8,700 self-only / $17,400 family. Those numbers matter because they define whether your specific health plan even makes you HSA-eligible in the first place — a plan with a deductible below that floor doesn't qualify, no matter how much you'd like to contribute.
2027 HSA self-only limit$0
2027 HSA family limit$0
2026 FSA limit$02027 FSA figure not yet announced
The math for one person
The single biggest structural difference between the two accounts isn't the contribution limit — it's what happens to unused money. An HSA is yours permanently. Contribute $3,000 this year, spend $800 on actual medical costs, and the remaining $2,200 rolls over indefinitely, keeps earning interest or investment returns if your HSA provider allows investing (many do once you hit a minimum balance), and stays with you even if you switch jobs or health plans entirely. It's the only account in the tax code with triple tax advantage: pretax contributions, tax-free growth, and tax-free withdrawals for qualified medical expenses — better treatment than either a traditional or Roth retirement account gets on its own.
An FSA is the opposite by design. It's a "use it or lose it" account: contribute for the plan year, and unless your employer's specific plan allows a carryover (capped at $680 for 2026) or a short grace period, unspent money reverts to your employer at year-end. That's not a minor footnote — it's the entire reason FSA elections require actually forecasting your medical spend for the coming year, while HSA elections don't require any forecasting at all, since there's no penalty for contributing more than you end up spending.
Pro Tip
The forecasting burden is the real practical difference day to day. With an HSA, when in doubt, contribute more — worst case, it sits invested for a decade until you need it. With an FSA, when in doubt, contribute less than your best guess, because overestimating is the costly mistake, not underestimating.
The catch is eligibility. You can't simply choose an HSA the way you choose an FSA — it requires enrolling in a qualifying high-deductible health plan. If your employer only offers a standard PPO, an HSA isn't on the table regardless of how much you'd like the tax treatment, and the FSA becomes the only pretax option for predictable medical costs.
When an FSA still wins
I don't want to oversell the HSA, because for a specific kind of household the FSA is genuinely the better fit, and it's worth naming why plainly rather than treating this as a foregone conclusion.
Pros
HDHP premiums are often meaningfully lower than PPO premiums, partly funding the HSA contribution itself
HSA funds roll over forever and can be invested — a genuine long-term wealth-building account, not just a spending account
No 'use it or lose it' pressure means no year-end scramble to spend down a balance
After age 65, HSA withdrawals for non-medical expenses are taxed like a traditional IRA instead of penalized — added retirement flexibility
Cons
HDHPs mean a higher deductible before insurance kicks in — a real risk if you have predictable, front-loaded medical costs like a planned surgery or ongoing specialist care
FSA money is available in full on day one of the plan year, even before you've contributed it all — useful for a large expense early in the year
Households with young kids and predictable, moderate medical + dependent-care costs often do better with the certainty of an FSA's structure
An HSA does nothing for you if your employer doesn't offer a qualifying HDHP at all
Dependent-care FSAs are a separate account entirely, worth mentioning because they're easy to conflate with the health FSA: the limit is $7,500, set by statute rather than indexed for inflation, and it covers childcare and eldercare costs, not medical expenses. If you have kids in daycare, that's likely worth electing regardless of which health-side account you choose.
Run your own numbers
Interactive · HSA vs. FSA election
How much should you actually elect?
Your plan type
HDHP coverage
Predictable medical spend for the year$1,800
Marginal tax rate22%
Your HSA cap is $4,500. Electing $0 saves roughly $0 in taxes this year.
HSA figures use the official 2027 IRS limits (Rev. Proc. 2026-24); FSA uses the 2026 limit — the IRS had not announced the 2027 FSA cap as of this writing. An HSA requires enrollment in a qualifying HDHP. Not tax advice.
Here's What I'd Actually Do
Check what your employer actually offers before comparing accounts in the abstract — if there's no HDHP option, the HSA decision is already made for you.
If an HDHP is available, run the premium difference first. A meaningfully lower HDHP premium can offset a higher deductible even before counting the HSA's tax benefits.
For an FSA, estimate conservatively. Look at last year's actual medical spend, not this year's hoped-for healthy streak, and elect slightly under that number.
For an HSA, elect as much as you comfortably can up to the cap — there's no downside to over-contributing since nothing expires, only the opportunity cost of the cash itself.
If you're 55 or older, don't forget the $1,000 catch-up — it's easy to miss because, unlike the base limit, it hasn't changed in years and isn't automatically prompted by most enrollment software.
Revisit this every open enrollment, since HDHP thresholds, HSA limits, and your own health situation can all shift the right answer year to year.
FAQ
Frequently Asked Questions
For 2027 the IRS set the HSA contribution limit at $4,500 for self-only coverage and $9,000 for family coverage under Revenue Procedure 2026-24, up from $4,400 and $8,750 in 2026. Savers age 55 and older can add a $1,000 catch-up on top of either limit.
Warning
The 2027 FSA contribution limit had not been announced as of this writing; expect it in an IRS release around October or November 2026. This is general information, not tax or benefits advice — check your specific plan documents.
Sujit Karki||5 min read