HSAs, FSAs, and HRAs

Health Savings Accounts (HSAs), Flexible Spending Accounts (FSAs), and Health Reimbursement Arrangements (HRAs) are three types of tax-advantaged accounts designed to help people cover out-of-pocket healthcare costs. Each works differently, has different eligibility rules, and suits different situations. Understanding the differences helps you choose and use the right account.

Health Savings Accounts (HSAs)

An HSA is a personal savings account that you own and that can be used for qualified medical expenses. The defining requirement is that you must be enrolled in a High-Deductible Health Plan (HDHP) to contribute to an HSA.

What is an HDHP? The IRS sets minimum deductible thresholds and maximum out-of-pocket limits that a plan must meet to qualify as an HDHP. These thresholds are adjusted annually — check IRS Publication 969 or the IRS website for current figures. HDHPs typically have lower monthly premiums than standard plans, with higher initial out-of-pocket costs.

HSA tax advantages — triple benefit:

1. Contributions to your HSA are tax-deductible (if you make them yourself) or pre-tax (if made through payroll deduction)
2. Money in the HSA grows tax-free — interest, dividends, and investment gains are not taxed
3. Withdrawals for qualified medical expenses are entirely tax-free

This triple tax advantage makes the HSA particularly valuable for people who can afford to pay some current medical expenses out of pocket while letting their HSA balance grow.

Contributions: Annual contribution limits are set by the IRS and adjusted for inflation each year. There are separate limits for self-only and family HDHP coverage, and a higher catch-up contribution limit for individuals aged 55 and older. Check the current-year limits at irs.gov before contributing.

Rollover: HSA funds roll over from year to year without limit. There is no use-it-or-lose-it deadline. This means you can accumulate a substantial balance over years of contributions and invest it — many HSA providers allow account holders to invest balances in mutual funds or ETFs once the balance exceeds a threshold.

After age 65: Once you enroll in Medicare, you can no longer make new HSA contributions. However, you can continue to use accumulated HSA funds for qualified medical expenses tax-free. After age 65, you can withdraw funds for any purpose without the 20% penalty that applies to non-medical withdrawals before 65 — though the withdrawal will be subject to ordinary income tax.

Account ownership: The HSA belongs to you, not your employer. If you change jobs, your HSA stays with you.

Flexible Spending Accounts (FSAs)

An FSA is an employer-established benefit account that allows you to set aside a portion of your paycheck before taxes to pay for qualified medical expenses. Key features:

No HDHP requirement: Unlike HSAs, you do not need to be enrolled in an HDHP to use an FSA. You can have an FSA with any employer-sponsored health plan.

Employer-controlled: FSAs are set up and administered by your employer. When you leave a job, you typically lose access to any unused FSA balance (your employer retains it). The annual contribution amount is set when you elect the benefit during open enrollment and generally cannot be changed mid-year except following a qualifying life event.

Use-it-or-lose-it: This is the most significant limitation of FSAs. Money you contribute that is not spent on qualified expenses by the end of the plan year is generally forfeited. Employers have the option to offer one of two accommodations:

• A grace period of up to a certain number of months after the plan year ends
• A limited carryover of a specified amount (set by the IRS) to the next plan year

Not all employers offer either option — ask your benefits administrator whether your FSA has a grace period, carryover, or neither.

Dental and vision FSAs: Some employers offer standalone dental or vision FSAs, or allow FSA funds to be used for dental and vision in addition to medical expenses. These work similarly to general purpose FSAs.

Dependent care FSAs: A separate type of FSA for daycare, preschool, and other dependent care expenses — not for medical expenses. Different annual limits apply.

Health Reimbursement Arrangements (HRAs)

An HRA is an employer-funded account used to reimburse employees for qualified medical expenses and sometimes insurance premiums. Key features:

Entirely employer-funded: Employees cannot contribute to an HRA — it is funded entirely by the employer.

Several types exist:

• Integrated HRAs: Used alongside a group health plan, reimbursing out-of-pocket expenses
• Individual Coverage HRA (ICHRA): Employers reimburse employees for premiums and qualified expenses on individual health plans purchased on the Marketplace — allows employers to offer tax-advantaged health benefits without sponsoring a group plan
• Excepted Benefit HRA (EBHRA): A small employer-funded account for limited expenses like dental, vision, or COBRA premiums

Reimbursement, not an account: HRA funds do not accumulate in an account you own — you submit receipts or claims for reimbursement from the employer’s HRA. Unused funds typically revert to the employer at year-end unless the employer specifically allows rollover.

Choosing between them

If your employer offers a choice, key considerations:

Feature	HSA	FSA	HRA
Requires HDHP	Yes	No	No
Who funds it	You + employer	You	Employer only
Rollover	Unlimited	Limited	Employer decides
Portable on job change	Yes (you own it)	No	No
Investment option	Often yes	No	No

If you are enrolled in an HDHP and can afford to pay some expenses out of pocket in the short term, an HSA with investment of accumulated funds is often the most advantageous long-term tool. If you are not enrolled in an HDHP or want to set aside predictable amounts for expected expenses, an FSA may be the right fit.

Comparing HSA, FSA, HRA, and LPFSA

The four main tax-advantaged health accounts have distinct eligibility rules, ownership structures, and use cases. The table below summarizes the key features:

Feature	HSA	General FSA	HRA	LPFSA
HDHP required	Yes	No	No	Yes (used alongside HSA)
Who funds it	You and/or employer	You (employee)	Employer only	You (employee)
Annual contribution limit (IRS, updated annually)	Self / family limits set by IRS	IRS limit (shared with LPFSA)	Employer decides	Shares IRS FSA limit
Rollover	Unlimited — yours forever	Limited or none (use-it-or-lose-it)	Employer decides	Limited or none
Portable on job change	Yes — you own it	No — employer retains unused balance	No	No
Investment option	Yes (often after minimum balance)	No	No	No
Eligible expenses	Broad medical, dental, vision, long-term care, Medicare premiums	Medical, dental, vision	Employer-defined; often medical and premiums	Dental and vision only
Compatible with HSA	N/A	No (except LPFSA and dependent care FSA)	ICHRA compatible; integrated HRAs generally not	Yes

The HSA’s triple tax advantage and unlimited rollover make it the most powerful long-term wealth-building tool of the four — but it requires HDHP enrollment and the financial capacity to pay some current costs out of pocket. For those who prefer lower deductibles or cannot reliably absorb out-of-pocket costs, an FSA offers pre-tax savings without the HDHP requirement.

What this looks like in practice

Imagine David, a 34-year-old software engineer who has been on a standard PPO plan through his employer for several years. During open enrollment, his employer offers a new HDHP option with a meaningfully lower monthly premium — $180 less per month than his current PPO. The tradeoff is a higher deductible: $1,500 individual versus $400 on his PPO. His employer also contributes $600 to an HSA if employees choose the HDHP.

David runs the numbers: his lower premium saves $2,160 per year. His employer puts in $600. His own maximum HSA contribution adds another $3,700 (approximate self-only limit for that year). Even if he hits his full $1,500 deductible — which he has not done in any of the past four years — he comes out ahead compared to his old PPO. And unlike money spent on PPO premiums, every dollar he contributes to the HSA is available for future medical expenses, invested tax-free, and portable if he changes jobs.

David switches to the HDHP and opens an HSA through his employer’s HSA provider. He sets up automatic payroll contributions. For dental and vision costs, he enrolls in the employer’s LPFSA — the dental-and-vision-only FSA that is compatible with his HSA. This lets him use pre-tax FSA dollars for predictable dental and vision expenses while his HSA grows for broader medical costs. After five years of accumulating and investing the HSA balance, he has built a dedicated fund for future healthcare expenses in retirement — a stage of life when out-of-pocket medical costs are among the largest household expenses.

Step by step: opening and using an HSA

1. Confirm your HDHP enrollment. Verify that your health plan meets current IRS HDHP requirements — minimum deductible and maximum out-of-pocket thresholds are updated annually. Check IRS Publication 969 or your plan documents.
2. Check that you meet all eligibility rules. You must not be enrolled in Medicare, not be claimed as a dependent on someone else’s return, and not hold disqualifying other coverage such as a general-purpose FSA through the same employer.
3. Open an HSA account. If your employer offers payroll-deduction HSA contributions, enroll through your benefits portal. If you open one independently, choose a provider with low fees and investment options.
4. Set your contribution amount. Review the IRS annual limits for self-only vs. family HDHP coverage, subtract any employer contributions, and decide how much to contribute. Maximizing contributions is generally advisable if budget allows.
5. Keep records of all qualified expenses paid from the HSA. The IRS can audit HSA withdrawals; retain receipts and explanations of benefits for every purchase. Records should be kept for at least three years after filing.
6. Invest the balance once you exceed the minimum threshold. Most HSA providers allow you to invest balances above $1,000–$2,000 in mutual funds. Tax-free investment growth is one of the HSA’s most valuable long-term features.
7. Plan for Medicare enrollment. HSA contributions must cease when you enroll in Medicare. Time your final contributions carefully to avoid exceeding the annual limit in the transition year. Accumulated funds remain available for qualified expenses — including Medicare premiums — indefinitely.

Documents and terms you’ll see

When opening or using a health savings account or flexible spending account, you will encounter terms including:

• HSA — Health Savings Account; a personally owned, tax-advantaged account available exclusively to HDHP enrollees, with unlimited rollover and investment options
• FSA — Flexible Spending Account; an employer-administered pre-tax account for medical expenses, typically subject to use-it-or-lose-it rules at year-end
• HRA — Health Reimbursement Arrangement; an employer-funded reimbursement account for qualifying medical or premium expenses; employees cannot contribute
• LPFSA — Limited Purpose Flexible Spending Account; a dental-and-vision-only FSA compatible with concurrent HSA eligibility, allowing HDHP enrollees to use both account types
• High-Deductible Health Plan — A health insurance plan meeting IRS minimum deductible and maximum out-of-pocket thresholds that qualifies the enrollee to open and contribute to an HSA
• Qualified Medical Expense — An expense defined in IRS Publication 502 that can be paid or reimbursed tax-free from an HSA, FSA, or HRA; includes most medical, dental, and vision costs but excludes cosmetic procedures and most non-prescription supplements