Can You Have an HSA and FSA at the Same Time? Rules for 2026

Can You Have an HSA and FSA at the Same Time? The General Rule

The IRS is clear on this point: if you are covered by a general-purpose health FSA that can reimburse any qualified medical expense, you are not eligible to contribute to an HSA. This rule comes directly from IRS Publication 969, which states that an employee covered by an HDHP and a health FSA that "pays or reimburses qualified medical expenses" generally cannot make HSA contributions.

The reasoning is straightforward. An HSA requires enrollment in a High Deductible Health Plan (HDHP) as the primary form of coverage. A general-purpose FSA acts as additional first-dollar health coverage because it can reimburse expenses before you meet your deductible. In the IRS's view, that extra coverage disqualifies you from the HSA.

This rule applies even if you never actually use the FSA. Simply being enrolled in a general-purpose FSA, even with a $0 balance, makes you ineligible for HSA contributions for every month you are covered by it.

What Is a Limited-Purpose FSA and How Does It Work with an HSA?

A limited-purpose FSA (LPFSA) is the most common way to have an HSA and FSA at the same time. Unlike a general-purpose FSA, an LPFSA restricts reimbursement to dental and vision expenses only. Because it does not cover general medical expenses, the IRS does not treat it as disqualifying coverage for HSA purposes.

What an LPFSA Covers

An LPFSA reimburses expenses in two categories:

Dental expenses: cleanings, fillings, crowns, bridges, orthodontics (braces, Invisalign), root canals, dentures, dental X-rays, and oral surgery.

Vision expenses: eye exams, prescription eyeglasses, prescription sunglasses, contact lenses, contact lens solution, LASIK surgery, and prescription reading glasses.

These are the same expenses that qualify under a general-purpose FSA, but an LPFSA limits reimbursement exclusively to these two categories. HealthEquity's LPFSA guide provides additional detail on eligible dental and vision items.

Why the LPFSA Is Worth Using

Many people skip the LPFSA because they already have an HSA. That is a mistake. Your HSA can pay for dental and vision expenses too, but every dollar you spend from your HSA is a dollar that is no longer growing tax-free. By running dental and vision costs through an LPFSA instead, you preserve your HSA balance for long-term tax-free investment growth.

Consider a family with $2,400 in annual dental and vision costs. If they pay from the HSA, that money is gone. If they route those expenses through an LPFSA and leave the $2,400 in the HSA invested at 7% annual returns, that single year's preserved balance grows to roughly $9,200 over 20 years - completely tax-free.

LPFSA Contribution Limits for 2026

The LPFSA shares the same IRS contribution limit as a general-purpose FSA:

Your employer sets the actual LPFSA limit, which may be lower than the IRS maximum. Not all employers offer an LPFSA, so check with your HR or benefits team to see if one is available alongside your HDHP.

The Post-Deductible FSA: A Rare but Powerful Option

A post-deductible FSA is the second type of FSA that preserves HSA eligibility. This account works in two phases:

Before you meet your HDHP deductible: The post-deductible FSA reimburses only dental and vision expenses, functioning identically to an LPFSA.

After you meet your HDHP deductible: The account expands to cover all qualified medical expenses, just like a general-purpose FSA.

The IRS permits this arrangement because before the deductible is met, the FSA is limited-purpose. After the deductible is satisfied, the HDHP has already kicked in as primary coverage, so the FSA's broader reimbursement does not create "first-dollar" coverage that conflicts with HSA rules.

How It Works in Practice

Suppose your family HDHP has a $3,400 deductible in 2026. You contribute $3,400 to a post-deductible FSA. During the first months of the year, you use the FSA only for dental cleanings and new glasses. In August, a surgery pushes you past the $3,400 deductible. From that point forward, you can use the remaining FSA balance for any qualified medical expense, including prescriptions, physical therapy, and lab work.

Spouse FSA and HSA Rules: What Married Couples Need to Know

Spousal coordination is one of the most confusing aspects of having an HSA and FSA at the same time, and it is where many families accidentally lose HSA eligibility. The rules depend on whose name is on each account and what type of health coverage each spouse has.

Scenario 1: You Have an HDHP and HSA. Your Spouse Has an Employer FSA.

If your spouse is enrolled in a general-purpose FSA through their employer, and that FSA can reimburse your medical expenses, then you lose HSA eligibility. A spouse's general-purpose FSA is considered "other health coverage" under IRS Publication 969 if it can pay for the HSA holder's expenses. BerniePortal's spousal FSA guide walks through additional household scenarios.

The fix: Your spouse can ask their employer to convert their general-purpose FSA to an LPFSA. If the employer's plan does not offer an LPFSA, your spouse should consider opting out of the FSA entirely so that your HSA eligibility is preserved.

Scenario 2: Your Spouse Has an LPFSA Through Their Employer.

This is perfectly fine. An LPFSA does not provide general medical coverage, so it does not disqualify you from contributing to your HSA. Your spouse uses the LPFSA for dental and vision costs, and you continue making full HSA contributions.

Scenario 3: Both Spouses Have HDHPs.

If both spouses are enrolled in separate HDHPs, each can have their own HSA. If one spouse also has access to an LPFSA, that does not affect the other spouse's HSA eligibility. This is the optimal setup for maximizing household tax savings.

Scenario 4: You Switch from an FSA to an HSA Mid-Year.

This is the trickiest transition. If you had a general-purpose FSA in the previous plan year and it has a grace period or rollover balance, your HSA eligibility may be blocked:

• Grace period with a remaining balance: You are ineligible for HSA contributions until the grace period ends (up to 2.5 months into the new plan year).
• Grace period with zero balance: You are HSA-eligible from January 1 because the FSA provides no actual coverage.
• Rollover balance carried into the new year: You are ineligible for HSA contributions for the entire new plan year, unless the rollover goes into an LPFSA.

HSA and FSA Contribution Limits for 2026

Understanding the combined limits helps you plan your maximum tax-advantaged savings. Here are all the relevant 2026 numbers from the IRS Revenue Procedure 2025-19, Fidelity's contribution limits guide, and the One Big Beautiful Bill Act:

A family in 2026 with both spouses over 55, one LPFSA, and a dependent care FSA could contribute up to: $8,750 (HSA) + $1,000 (catch-up, spouse 1) + $1,000 (catch-up, spouse 2) + $3,400 (LPFSA) + $7,500 (DCFSA) = $21,650 in combined pre-tax savings.

Use our contribution calculator to model your specific household scenario and see the tax savings.

The Dependent Care FSA Is Always HSA-Compatible

Many people overlook the dependent care FSA (DCFSA) when thinking about HSA and FSA combinations, because they assume "FSA" means "health FSA." A DCFSA is an entirely different account that covers dependent care expenses, not medical expenses. It has no impact whatsoever on HSA eligibility.

What a DCFSA Covers

A DCFSA reimburses expenses for the care of dependents under age 13 (or disabled dependents of any age) so that you and your spouse can work. Eligible expenses include:

• Daycare, preschool, and after-school programs
• Summer day camps (not overnight camps)
• Nanny, au pair, or babysitter fees for work-related care
• Elder care for a dependent who lives with you

2026 DCFSA Limits

The One Big Beautiful Bill Act raised the DCFSA limit from $5,000 to $7,500 for married couples filing jointly (and from $2,500 to $3,750 for married filing separately). This increase took effect for plan years beginning after the law's enactment and is a significant boost for families paying for childcare.

What Happens If You Contribute to Both an HSA and FSA by Mistake

Mistakes happen. You might have enrolled in a general-purpose FSA without realizing it disqualified your HSA contributions, or your employer may have auto-enrolled you. Here is what to do:

Step 1: Determine How Long You Were Ineligible

You are ineligible for HSA contributions for every month you were covered by the general-purpose FSA. If you were covered January through December, the entire year's HSA contributions are excess.

Step 2: Request a Return of Excess Contributions

Contact your HSA custodian and request a return of excess contributions before your tax filing deadline (April 15, 2027 for tax year 2026). The custodian will also withdraw any earnings attributable to the excess amount. You will owe income tax on the returned earnings, but you will avoid the 6% excise tax penalty.

Step 3: File Form 5329 If You Miss the Deadline

If you do not remove the excess contributions before the filing deadline, you owe a 6% excise tax on the excess amount for every year it remains in the account. The penalty repeats annually until corrected.

Step 4: Fix the Source

If the issue was an employer auto-enrollment in a general-purpose FSA, contact your HR department immediately. Ask them to either remove the FSA enrollment or convert it to an LPFSA (if available) effective as early as possible in the plan year.

HSA and FSA Double Dipping: Why You Cannot Claim the Same Expense Twice

Even when you legitimately have both an HSA and an LPFSA, you cannot submit the same expense to both accounts. This is called "double dipping," and the IRS prohibits it under IRC Section 213.

How to Keep Expenses Separate

The rule is simple: each expense goes to one account. A dental crown goes to the LPFSA or the HSA, not both. A prescription goes to the HSA only (since the LPFSA does not cover it). An eye exam goes to the LPFSA or the HSA, your choice.

Best practice is to establish a clear routing system:

• Dental and vision expenses: Always route to the LPFSA first. This preserves your HSA balance.
• All other qualified medical expenses: Route to the HSA, or pay out-of-pocket and save the receipt for future tax-free reimbursement.
• Childcare expenses: Route to the DCFSA. These are never eligible for the HSA or LPFSA.

Use our expense checker to verify whether a specific expense is HSA-eligible, LPFSA-eligible, or both.

What Happens If You Double Dip

If the IRS discovers that you claimed the same expense from both accounts, the second reimbursement is treated as a non-qualified distribution. For an HSA, that means you owe income tax plus a 20% penalty on the amount. For an FSA, the amount may be disallowed and you could face plan disqualification.

2026 Legislative Changes: How the One Big Beautiful Bill Affects HSA and FSA Rules

The One Big Beautiful Bill Act, signed into law in 2025, made several changes that affect how HSAs and FSAs work together:

Expanded HSA eligibility: Bronze and catastrophic marketplace plans now qualify as HDHPs for HSA purposes, opening HSA access to millions of additional people. Many of these new HSA holders may also have access to employer LPFSAs.

Telehealth before deductible is permanent: Employers can continue offering telehealth benefits without disqualifying employees from HSA eligibility. This had previously been a temporary COVID-era provision.

Direct Primary Care (DPC) compatibility: HSA holders can now use their accounts for DPC memberships without losing eligibility.

Higher DCFSA limits: The DCFSA limit increased from $5,000 to $7,500, making the HSA + DCFSA combination even more valuable for working parents.

These changes mean the pool of people who can benefit from pairing an HSA with a compatible FSA has grown substantially.

How to Check If Your Employer Offers a Compatible FSA

Your ability to have an HSA and FSA at the same time depends entirely on what your employer offers. Employees cannot create an LPFSA or post-deductible FSA independently - these must be part of the employer's benefits plan.

Here is how to find out:

1. Review your benefits enrollment guide. Look for terms like "limited-purpose FSA," "LPFSA," "dental and vision FSA," or "post-deductible FSA."
2. Contact your HR or benefits team. Ask specifically: "Does our company offer a limited-purpose FSA that can be used alongside an HSA?"
3. Check your FSA administrator's portal. Platforms like HealthEquity, WageWorks, and Ameriflex clearly label whether an FSA is general-purpose or limited-purpose.
4. Review your Summary Plan Description (SPD). This legal document defines exactly what your FSA covers.

If your employer does not currently offer an LPFSA, consider requesting one. Employers benefit too - LPFSA contributions reduce payroll taxes (FICA) for both the employee and the employer.

Use our eligibility checker to verify your full HSA eligibility status, including whether any existing FSA coverage might disqualify you.