HSA Administration Services for Employers: What They Cover and How to Choose One

What is Health Savings Account (HSA)?

HSA administration services for employers cover everything it takes to run a Health Savings Account program correctly: verifying who's eligible, setting up payroll deductions, issuing debit cards, filing the right IRS forms, and answering the hundred small questions employees have about their money. If you offer a high-deductible health plan (HDHP), you almost certainly need someone handling this in the background, because the IRS rules around HSAs are more detailed than most people realize, and getting them wrong creates real tax headaches for both you and your employees.

This guide walks through what HSA administration actually involves, who qualifies for an HSA, the current IRS contribution limits, what employers are on the hook for, and how to think about choosing a third-party administrator (TPA) to run the whole thing for you.

What does HSA administration actually include, and why do employers hand it off to a TPA?

An HSA sounds simple on paper: an employee puts pre-tax money into an account, spends it on qualified medical expenses, and the balance rolls over year after year. In practice, running that program touches payroll, tax reporting, banking, and ongoing compliance monitoring. A full-service HSA administrator typically handles:

●Eligibility verification at enrollment and throughout the year to confirm each participant is actually HDHP-eligible

●Account setup and custodial banking through an FDIC-insured trustee

●Debit card issuance and mobile app access for spending and balance checks

●Payroll integration so pre-tax contributions flow correctly every pay period

●Investment platform access once an employee's cash balance clears the required threshold

●Annual tax reporting support, including the data employers need for Form 8889 and Form 5498-SA

●Employee support for the "can I use this for that?" questions that show up constantly

Most employers outsource this because the compliance side isn't a once-a-year task. Contribution limits change annually, eligibility rules have exceptions most HR teams don't memorize, and mistakes can trigger excise taxes or messy W-2 corrections. A dedicated administrator absorbs that workload so your HR team isn't relearning IRS Publication 969 every January.

Who's actually eligible to open and contribute to an HSA?

Eligibility is where a lot of confusion starts, because being enrolled in an HDHP is necessary but not sufficient. Per IRS Publication 969, to open and contribute to an HSA, a person must:

●Be covered by a qualifying HDHP and no other health plan that isn't also an HDHP

●Not be enrolled in Medicare

●Not be claimed as a dependent on someone else's tax return

●Not have general-purpose FSA or HRA coverage (through their own plan or a spouse's) that pays medical expenses before the deductible

A few common trip-ups worth flagging: enrolling in even a small amount of TRICARE or VA benefits used for non-preventive care in the prior three months can disqualify someone. So can being added as an authorized user on a spouse's general-purpose FSA. This is exactly the kind of nuance that trips up new HR hires and why eligibility screening at enrollment matters more than it seems.

What are the current IRS HSA contribution limits?

2026 contribution limits by coverage tier

Under IRS Revenue Procedure 2025-19, the 2026 annual HSA contribution limits are:

●Self-only HDHP coverage: $4,400

●Family HDHP coverage: $8,750

●Catch-up contribution for individuals age 55 and older: $1,000 (this figure is set by statute and hasn't changed since 2009, per IRS Publication 969)

The catch-up amount has to go into an HSA in the older spouse's own name, not the younger spouse's account, which is a detail that trips up a lot of married couples both trying to max out contributions.

What counts as an HDHP for 2026

To pair with an HSA, a plan also has to meet HDHP thresholds set in the same Revenue Procedure:

●Minimum deductible: $1,700 self-only / $3,400 family

●Maximum out-of-pocket: $8,500 self-only / $17,000 family

These numbers move most years with inflation, so if you're evaluating plan designs for next year's renewal, always confirm the current figures directly against IRS.gov rather than relying on last year's numbers, since a plan that qualified as an HDHP in 2025 could fall out of compliance if the deductible wasn't adjusted.

What do employers actually need to handle for HSA compliance?

Employers don't manage the HSA itself, employees own the account, but employers do have real obligations tied to offering one alongside an HDHP:

1.Setting up pre-tax payroll deductions through a Section 125 cafeteria plan so employee contributions avoid FICA and income tax

2.Deciding on employer contributions, and if made outside a cafeteria plan, following IRS comparability rules that require contributing the same amount or percentage to all similarly situated employees

3.Nondiscrimination testing if HSA contributions run through a Section 125 plan, since cafeteria plans have their own testing requirements separate from comparability rules

4.Reporting employer and employee pre-tax contributions in Box 12, Code W on each employee's W-2, per IRS W-2 instructions

5.Coordinating with the HSA custodian so employees receive their own Form 5498-SA for contributions and, if applicable, tax documents tied to distributions

Employees, in turn, use Form 8889 to report their total contributions, calculate their deduction, and report any distributions when they file their personal taxes. Employers don't file this form, but they're the source of the contribution data employees need to fill it out accurately, which is another reason clean payroll-to-HSA reporting matters.

How does HSA administration work in practice with a TPA like CafeHealth?

Here's what the actual workflow looks like once a third-party administrator is running the program:

●Enrollment: Eligibility is verified against HDHP enrollment data before an account opens, avoiding the mess of accepting contributions from someone who doesn't qualify

●Debit cards and mobile access: Employees get a card and app on day one, so they're not waiting weeks to use their own money

●Investment options: Once a cash threshold is met, employees can move part of their balance into investment funds to grow savings for future or retirement medical costs

●Coordination with other accounts: HSAs need to play nicely with other benefits, a limited-purpose FSA for dental and vision, or an HSA-compatible HRA, without accidentally disqualifying the HSA itself

●Employer dashboard and reporting: Contribution activity, participation rates, and the data needed for W-2 reporting are available without manual reconciliation

CafeHealth handles this full setup, including how HSAs integrate with FSA, HRA, ICHRA, and LSA offerings under one umbrella, so employers aren't managing five separate vendor relationships. If you want to see how this looks for a Phoenix-based workforce specifically, our HSA administration services in Phoenix page walks through local plan design details and pricing.

How do you actually choose the right HSA administrator?

Not every TPA structures fees or service the same way, and the differences show up fast once you're comparing quotes. A few things worth putting on your checklist:

●Fee structure: Some administrators charge a flat per-employee-per-month fee, others take a percentage of assets under management once employees start investing. Ask for both numbers up front.

●Compliance support: Does the administrator proactively flag eligibility issues, or do you find out after the fact when the IRS sends a notice?

●Employee self-service tools: A mobile app, real-time balance checks, and receipt uploads reduce the volume of "where's my card" calls to your HR team.

●Investment lineup: Look at the fund options and expense ratios, since a limited or expensive lineup discourages employees from actually growing their savings.

●Local service availability: If your workforce is concentrated in one metro area, an administrator with local account management, not just a national call center, can matter for faster issue resolution.

●Integration with your other benefits: If you already run an FSA, HRA, or commuter benefit through one TPA, adding HSA administration to the same platform usually beats juggling separate vendors and separate employee logins.

Frequently asked questions about HSA administration

What is the HSA contribution limit for 2026?

For 2026, the IRS set the limit at $4,400 for self-only HDHP coverage and $8,750 for family coverage, per Revenue Procedure 2025-19. Anyone 55 or older can add an extra $1,000 catch-up contribution on top of those amounts.

Who's eligible to open a Health Savings Account?

You need to be enrolled in a qualifying HDHP, have no other disqualifying health coverage like a general-purpose FSA or Medicare, and not be claimed as someone else's dependent. Full details are in IRS Publication 969.

Can I contribute to an HSA and a Flexible Spending Account at the same time?

Only if the FSA is a limited-purpose FSA that only covers dental and vision expenses, or a post-deductible FSA. A regular general-purpose FSA that pays medical expenses before the deductible will disqualify you from contributing to an HSA in the same year.

How much does it cost an employer to offer HSA administration?

Costs vary by administrator, but most charge a monthly per-employee fee, sometimes combined with a small percentage-based fee once employees start investing balances. It's worth comparing quotes side by side since bundled pricing with other benefits like FSA or HRA administration often works out cheaper than paying for each separately.

What happens to unused HSA funds at the end of the year?

Nothing, they stay put. Unlike an FSA, HSA balances never expire and there's no "use it or lose it" deadline. The money is the employee's, rolls over indefinitely, and stays with them even if they leave the employer or change health plans.

Do employer contributions to an HSA count toward the annual limit?

Yes. Employer and employee contributions combined can't exceed the annual IRS limit for that coverage tier. If an employer puts in $1,000 for self-only coverage in 2026, the employee can contribute up to $3,400 more to stay within the $4,400 total.

If you're weighing whether to bring HSA administration in-house or hand it to a TPA, it's usually worth a short conversation before your next renewal. Book a free consultation with Shannon and she'll walk through what makes sense for your workforce, your budget, and your current benefits setup.

What is the HSA contribution limit for 2026?

For 2026, the IRS set the limit at $4,400 for self-only HDHP coverage and $8,750 for family coverage, per Revenue Procedure 2025-19. Anyone 55 or older can add an extra $1,000 catch-up contribution on top of those amounts.

Who's eligible to open a Health Savings Account?

You need to be enrolled in a qualifying HDHP, have no other disqualifying health coverage like a general-purpose FSA or Medicare, and not be claimed as someone else's dependent. Full details are in IRS Publication 969.

Can I contribute to an HSA and a Flexible Spending Account at the same time?

Only if the FSA is a limited-purpose FSA that only covers dental and vision expenses, or a post-deductible FSA. A regular general-purpose FSA that pays medical expenses before the deductible will disqualify you from contributing to an HSA in the same year.

How much does it cost an employer to offer HSA administration?

Costs vary by administrator, but most charge a monthly per-employee fee, sometimes combined with a small percentage-based fee once employees start investing balances. It's worth comparing quotes side by side since bundled pricing with other benefits like FSA or HRA administration often works out cheaper than paying for each separately.

What happens to unused HSA funds at the end of the year?

Nothing, they stay put. Unlike an FSA, HSA balances never expire and there's no \\\"use it or lose it\\\" deadline. The money is the employee's, rolls over indefinitely, and stays with them even if they leave the employer or change health plans.

Do employer contributions to an HSA count toward the annual limit?

Yes. Employer and employee contributions combined can't exceed the annual IRS limit for that coverage tier. If an employer puts in $1,000 for self-only coverage in 2026, the employee can contribute up to $3,400 more to stay within the $4,400 total.

HSA rules change every year, and the IRS just bumped the 2026 contribution limits again. If you're an HR leader trying to keep payroll, compliance, and employee questions all straight, our new guide breaks down what actually changed and what you're on the hook for. Ready to talk through your setup? Book time with Shannon. #HSA #EmployeeBenefits #HRcompliance #HDHP #BenefitsAdministration Book a free chat with Shannon.