2027 HSA Limits: The 16 Numbers and Rule Changes Every Benefits Admin Needs Before Open Enrollment
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Here are the 16 numbers and rule changes that matter for 2027 HSA plans. The IRS set the 2027 limits in May 2026: $4,500 for self-only, $9,000 for family, plus a $1,000 catch-up at 55. Deductible and out-of-pocket floors moved too. And three rule changes from 2025’s big tax law are now fully live. All of it, in one place, with the payroll math done.
Every year I watch the same thing happen. The limits come out in May, nobody looks at them until October, and then somebody builds the OE slide off last year’s number. An employee elects the old max, hits the new max in November, and payroll has to figure out why the last two deductions look weird.
So here’s the list. Print it. Tape it to the wall next to your OE calendar. These are the 2027 amounts, and they tick up most years.
What are the 2027 HSA contribution limits?
1. Self-only coverage: $4,500 for 2027
The 2027 HSA contribution limit for self-only HDHP coverage is $4,500, up $100 from $4,400 in 2026, per IRS Rev. Proc. 2026-24 (2026).
This is the number that goes on the OE election form, the payroll cap, and the vendor’s plan setup. If any of those three still says $4,400 in January, contributions get capped short or run over. I’ve seen the vendor portal carry the old cap into a new year because nobody submitted the plan-year change form.
Action: Update all three places (election form, payroll cap, vendor plan setup) and initial each one.
2. Family coverage: $9,000 for 2027
The 2027 family limit is $9,000, up $250 from $8,750 in 2026 (IRS Rev. Proc. 2026-24, 2026).
“Family” here means the HDHP coverage tier, not the tax filing status. An employee on employee-plus-one is on the family limit. An employee whose spouse has their own HSA shares this $9,000 between the two accounts. That split is where couples over-contribute without either one knowing.
Action: Add one line to the OE form: “If your spouse also has an HSA, your combined family limit is $9,000.”
3. Catch-up at 55: still $1,000, unchanged since 2009
Employees who are 55 or older by the end of 2027 can add $1,000 on top of the base limit. The catch-up is written into the statute at IRC §223(b)(3) and is not inflation-indexed, so it has been $1,000 for well over a decade.
Two traps. First, “55 by December 31,” not “55 at enrollment.” Second, each spouse over 55 needs their own HSA to take their own catch-up. One account can’t hold two people’s catch-ups.
Action: Flag every employee turning 55 in 2027 and confirm their election includes the extra $1,000 if they want it.
Explaining the catch-up, the family split, and “it’s not an FSA” in a live meeting is exactly what The Plain-English HSA is for. One page, three scripts, free.
4. The limit is combined: employer money counts against it
The annual limit covers every dollar that lands in the account, from the employee, the employer, or anyone else (IRS Publication 969).
A $750 employer seed on a self-only plan means the employee can only put in $3,750 in 2027. If the payroll cap is set at $4,500 for the employee alone, the account goes over by $750 and the employee owes a 6% excise tax every year it sits there.
Action: Set payroll caps at the statutory limit minus the employer contribution, per tier.
What does a plan need to still count as an HDHP in 2027?
5. Minimum deductible: $1,750 self-only, $3,500 family
For 2027, a plan must have a deductible of at least $1,750 (self-only) or $3,500 (family) to be an HDHP (Rev. Proc. 2026-24, 2026). That’s up from $1,700 and $3,400.
This is the quiet plan-killer. If your plan’s deductible sits exactly at the 2026 minimum and nobody moves it at renewal, the plan stops being an HDHP on January 1. Nobody enrolled in it can contribute to an HSA for the whole year, and the money that already went in becomes excess. The carrier will not always warn you.
Action: Pull the renewal SBC and confirm the deductible is at or above $1,750 / $3,500 before you sign.
6. Maximum out-of-pocket: $8,700 self-only, $17,400 family
An HDHP’s total in-network out-of-pocket cost for 2027 can’t exceed $8,700 for self-only or $17,400 for family (Rev. Proc. 2026-24, 2026). Up from $8,500 and $17,000.
Deductibles, copays, and coinsurance all count. Premiums don’t. This is also the number that makes the “wealth-building” pitch honest: an employee on a family plan could be on the hook for $17,400 in a bad year, and the average HSA balance was $5,532 in 2024 (EBRI, 2026).
Action: Put the OOP max on the OE slide next to the employer contribution so people see the real gap.
7. The ACA cap that forces an embedded deductible
The ACA’s own individual out-of-pocket cap is $12,000 for 2027 ($10,600 in 2026), and any family plan with a family OOP limit above that number must include an embedded individual limit, per the HHS Notice of Benefit and Payment Parameters. [Verify $12,000 before publish.]
Translation: a family HDHP with a $17,400 OOP max must cap any single person at $12,000. The plan document has to say so. If you inherited a plan and nobody’s read the SPD since 2019, this is worth a look.
Action: Ask the carrier in writing whether the family plan has an embedded individual OOP limit and what it is.
8. Telehealth before the deductible is permanent now
An HDHP can cover telehealth and remote care before the deductible without breaking HSA eligibility, permanently, for plan years starting on or after January 1, 2025 (IRS Notice 2026-5, 2025).
This safe harbor came and went three times between 2020 and 2024. Every time it lapsed, plans that offered $0 telehealth quietly disqualified everyone from the HSA. That whiplash is over. But your plan document has to actually elect it.
Action: Confirm your 2027 plan document includes pre-deductible telehealth if the plan offers it.
What changed in the rules, not just the numbers?
9. Bronze and catastrophic plans now count as HDHPs
As of January 1, 2026, ACA bronze and catastrophic plans are treated as HSA-compatible even if they don’t meet the normal HDHP tests (IRS Notice 2026-5, 2025). Notice 2026-5 says the plan doesn’t even have to be bought on the exchange.
Why an employer cares: if you run an ICHRA, your employees on bronze individual plans can now fund HSAs. And an employee whose spouse is on a bronze plan is no longer automatically disqualified by that spouse’s coverage.
Action: If you offer an ICHRA, add HSA setup to your onboarding flow for bronze-plan enrollees.
10. Direct primary care up to $150 a month doesn’t kill eligibility
Starting January 1, 2026, a direct primary care (DPC) membership with fees of $150 a month or less for one person, or $300 for more than one, no longer counts as disqualifying “other coverage.” The fees are also a qualified medical expense (IRS Notice 2026-5, 2025). Rev. Proc. 2026-24 confirms those caps stay at $150 / $300 for 2027.
Before this, one employee with a $99-a-month DPC doctor was technically ineligible for the HSA all year and nobody knew. Now they’re fine, as long as the fee stays under the cap and the practice doesn’t bundle in prescription drugs.
Action: Add “Do you have a direct primary care membership?” to your HSA eligibility questions, with the $150 cap noted.
11. Health FSA is $3,400 for 2026 and the 2027 number isn’t out yet
The 2026 health FSA limit is $3,400 with a $680 carryover (IRS Rev. Proc. 2025-32, 2025). The 2027 FSA figures come in the IRS’s fall inflation notice, usually October.
This matters because HSA limits come out 18 months early and FSA limits come out 6 weeks before OE. Don’t print “2027 FSA limit” on anything until the revenue procedure drops. And remember: a general-purpose health FSA disqualifies the HSA. Only a limited-purpose FSA (dental and vision) can sit next to an HSA.
Action: Leave the FSA number as “TBD, updates in October” on early OE drafts.
12. Dependent care FSA jumped to $7,500
The dependent care FSA limit rose from $5,000 to $7,500 starting in 2026, the first permanent change since 1986, under Public Law 119-21 (2025).
Not an HSA number, but it’s the other account employees ask about in the same OE meeting, and it’s the one they’ll be shocked by. Note it’s per household, not per employee, so married couples still share the $7,500.
Action: Put the DCFSA jump on the same OE slide as the HSA limits so nobody asks “wait, what?” in the meeting.
What do these numbers mean for payroll and your OE deadline?
| 2026 vs 2027 | 2026 | 2027 | Change |
| HSA limit, self-only | $4,400 | $4,500 | +$100 |
| HSA limit, family | $8,750 | $9,000 | +$250 |
| Catch-up (55+) | $1,000 | $1,000 | none |
| HDHP minimum deductible, self-only | $1,700 | $1,750 | +$50 |
| HDHP minimum deductible, family | $3,400 | $3,500 | +$100 |
| HDHP out-of-pocket max, self-only | $8,500 | $8,700 | +$200 |
| HDHP out-of-pocket max, family | $17,000 | $17,400 | +$400 |
| DPC monthly fee cap (single / multi) | $150 / $300 | $150 / $300 | none |
| Health FSA | $3,400 | TBD (Oct 2026) | — |
| Dependent care FSA | $7,500 | $7,500 (statutory) | none |
Sources: IRS Rev. Proc. 2026-24 and Rev. Proc. 2025-32; Public Law 119-21.
13. The per-paycheck math for a full-year max
On 26 pay periods, the 2027 self-only max is $173.08 per check and the family max is $346.15. On 24 pay periods, it’s $187.50 and $375.00. Subtract any employer seed before you divide.
Show the math longhand on the election form. $4,500 ÷ 26 = $173.07 repeating, so round to $173.08 and the last check catches the pennies. Employees who see the per-check number elect it; employees who see “$4,500” think they can’t afford it.
Action: Print the per-check amounts on the OE form for your actual pay schedule.
14. Mid-year changes prorate by month
HSA eligibility is tested on the first day of each month, and the annual limit is 1/12 per eligible month (IRS Publication 969). Someone who joins the HDHP July 1 gets 6/12 of the limit, unless they use the last-month rule.
The last-month rule lets an employee who is eligible on December 1 contribute the full year’s amount, but only if they stay eligible through December 31 of the next year. Break that testing period, and the extra is taxable income plus a 10% penalty. New hires love the last-month rule. New hires who quit in June hate it.
Action: For mid-year enrollees, default payroll to the prorated amount and let the employee opt up in writing.
15. Medicare Part A backdates six months and stops contributions
Enrolling in Medicare (any part) ends HSA contribution eligibility, and Part A can be backdated up to six months for someone who enrolls after 65 (Medicare.gov). Contributions in the backdated months are excess and carry a 6% excise tax each year they stay in.
This is the number-one HSA mess that lands on HR’s desk, and it always lands in Q1 when the employee gets a tax notice.
Action: Send a separate note to every employee 64 and older: “Stop HSA contributions six months before you apply for Medicare or Social Security.”
16. W-2 Box 12, Code W, and the 5498-SA
Employer HSA contributions plus employee pre-tax payroll contributions are reported on the W-2 in Box 12 with Code W (IRS W-2 instructions). The HSA custodian files Form 5498-SA to the IRS and the employee, usually by May 31.
The Code W total has to match what actually posted to the accounts. When payroll deducts money in December that doesn’t post until January, the W-2 and the 5498-SA disagree and the employee’s Form 8889 is wrong. Reconcile the Code W total to the vendor’s contribution report before W-2s go out.
Action: Add “reconcile Code W to vendor totals” to your January close list.
Nobody told me that the HSA limits are the easiest numbers in benefits to get right and the ones I’d get wrong most often, because they come out in May and I don’t think about them until October. The fix is boring: update the three places in June, the week the revenue procedure drops, and never touch them again. Boring is the whole job.
What to do first
- Update the election form, the payroll cap, and the vendor plan setup to the 2027 numbers today. Initial each one.
- Confirm the renewal deductible is at least $1,750 / $3,500 or the plan stops being an HDHP.
- Set payroll caps at the limit minus the employer seed, per tier.
- Send the Medicare six-month warning to everyone 64 and up.
- Grab The Plain-English HSA for the OE meeting scripts. Free, one page.
- If you’re building rate sheets and per-pay math for the whole OE, the Open Enrollment Mastery Kit has the 9-tab calculator that does every tier for you.
This is the plain-English version to get you oriented, not legal or tax advice. Before you act on any of it, confirm the specifics with your broker, your benefits counsel, or your filing software. My job here is to make it make sense, not to be your lawyer.
FAQ
Q: What is the 2027 HSA contribution limit? A: For 2027, the HSA limit is $4,500 for self-only coverage and $9,000 for family coverage, per IRS Rev. Proc. 2026-24. Employees 55 and older can add a $1,000 catch-up.
Q: What is the minimum deductible for an HDHP in 2027? A: A 2027 HDHP must have a deductible of at least $1,750 for self-only coverage or $3,500 for family coverage. Plans below those floors are not HSA-eligible.
Q: Do employer HSA contributions count toward the limit? A: Yes. The annual limit includes every contribution to the account from any source, so employer money reduces what the employee can add.
Q: Can I contribute to an HSA if I have a direct primary care membership? A: Yes, starting in 2026, as long as the DPC fee is $150 or less per month for one person ($300 for more than one) and the arrangement doesn’t include prescription drugs beyond vaccines.
Q: Why did the 2027 HSA limits come out so early? A: The IRS releases HSA and HDHP limits each spring, about 18 months ahead, so employers can set them during fall open enrollment. Most other limits come out in October or November.
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