Health Reimbursement Arrangements (HRAs) and Flexible Spending Accounts (FSAs) both let you pay for medical expenses with tax-advantaged dollars, but they differ in almost every structural detail: who funds them, who controls them, whether leftover money carries forward, and what happens when you leave your job. The confusion between them is understandable because both show up alongside your employer’s health plan and both reduce what you spend out of pocket on healthcare. But choosing between them, or understanding the one your employer offers, requires knowing how differently they actually work.
Who Puts Money In
This is the most fundamental difference. An HRA is funded entirely by your employer. You never contribute your own money to an HRA. Your employer decides how much to put in each year, and that amount is available for you to draw from when you have eligible medical expenses. Think of it as a promise from your employer to reimburse you up to a set dollar limit.
An FSA, on the other hand, is funded by you through payroll deductions. You elect a contribution amount at the beginning of the plan year, and that money comes out of your paycheck before taxes. Your employer may choose to contribute to your FSA as well, but the default setup is employee-funded. The tax benefit is straightforward: money you put into an FSA is not subject to federal income tax, Social Security tax, or Medicare tax. For most people, that translates to saving roughly 20 to 35 cents on every dollar contributed, depending on your tax bracket and state.
Who Controls the Account
Because the employer funds the HRA, the employer also sets the rules. Your employer decides what expenses qualify for reimbursement, how much is available each year, and whether unused funds roll over. Some employers design their HRAs to cover only deductibles and copays. Others allow reimbursement for a broad list of medical, dental, and vision expenses. You do not get to customize an HRA to your preferences; you work within whatever framework your employer establishes.
With an FSA, you have more personal control over the contribution amount, at least within IRS limits. For 2024, the maximum you can contribute to a healthcare FSA is $3,200. You pick a number up to that cap based on how much you expect to spend on medical costs during the year. The list of eligible expenses is set by the IRS rather than your employer, so it tends to be more standardized: doctor visits, prescriptions, dental work, vision care, and a wide range of over-the-counter health products that became FSA-eligible after 2020.
The Use-It-or-Lose-It Problem
FSAs are notorious for one frustrating feature: if you do not spend the money you contributed by the end of the plan year, you forfeit it. This is the “use-it-or-lose-it” rule, and it catches people every year. You estimate your medical spending in the fall, start contributing in January, and if your health costs turn out to be lower than expected, you lose whatever is left.
Employers can soften this blow in one of two ways, but not both. They can offer a grace period of up to two and a half months after the plan year ends, giving you extra time to incur expenses. Or they can allow a carryover of a limited amount into the next year, which for 2024 is up to $640. But many employers offer neither, and even when they do, the carryover cap means large unspent balances still vanish.
HRAs handle leftover funds very differently. Because the money belongs to the employer, the employer decides whether unused balances roll over. Many HRAs do allow rollovers, sometimes indefinitely, so your balance can grow over multiple years. This is a genuine advantage for people who are healthy in some years and face bigger bills in others. That said, rollover is not guaranteed; your employer’s plan document dictates whether it happens.
What Happens When You Leave Your Job
If you leave your employer, your FSA balance typically disappears. You have until your termination date (or the end of the plan year, depending on the plan’s terms) to submit claims for expenses incurred while you were still covered. After that, whatever remains is gone. COBRA continuation may let you keep your FSA temporarily, but only if you had more in the account than you had contributed at the point of separation, which is an unusual situation most people do not encounter.
HRA portability depends on the type of HRA. Traditional group HRAs are not portable at all. When you leave, the balance stays with your former employer. However, Individual Coverage HRAs, a newer type that became available in 2020, sometimes allow a limited portability window. And Qualified Small Employer HRAs (QSEHRAs) reimburse you for individual health insurance premiums, so the insurance policy you purchase is yours regardless of employment. The HRA benefit itself still ends when employment ends, but the coverage you bought with it does not.
Types of HRAs Worth Knowing About
HRAs are not one-size-fits-all. Several varieties exist, each with different rules about who can use them and what they cover.
- Traditional HRA: Paired with a group health plan, funded entirely by the employer, used to reimburse out-of-pocket medical costs. The employer sets the terms.
- Individual Coverage HRA (ICHRA): Introduced in 2020, this lets employers of any size give employees a set allowance to buy their own individual health insurance on the open market or through the ACA marketplace. There is no cap on how much the employer can contribute.
- Qualified Small Employer HRA (QSEHRA): Designed for businesses with fewer than 50 employees that do not offer a group health plan. Contribution limits are set annually by the IRS. For 2024, the cap is $6,150 for self-only coverage and $12,450 for family coverage.
- Excepted Benefit HRA: A limited HRA that can be offered alongside a traditional group health plan to cover expenses like dental, vision, or short-term medical costs. The annual employer contribution is capped at $2,100 for 2024.
The ICHRA in particular has grown quickly because it lets employers offer a health benefit without managing a group insurance plan. Employees shop for their own coverage, and the employer reimburses them tax-free up to the allowance. For small and mid-sized businesses, this can be simpler and more predictable than negotiating group rates.
How Each Interacts with an HSA
Health Savings Accounts are the third player in the tax-advantaged health account space, and the interaction rules matter. If you have a general-purpose FSA, you cannot also contribute to an HSA. The IRS treats both as “other health coverage,” so they conflict. However, a limited-purpose FSA, which only covers dental and vision expenses, can coexist with an HSA. If your employer offers both an HSA-eligible high-deductible plan and an FSA, the FSA is almost always the limited-purpose variety for this reason.
HRAs and HSAs have a more complicated relationship. A traditional HRA that covers general medical expenses will also disqualify you from contributing to an HSA. But employers can design an HRA to kick in only after you meet your deductible, sometimes called a “post-deductible HRA,” and that structure preserves your HSA eligibility. The key is whether the HRA provides first-dollar coverage for general medical expenses before the deductible is met. If it does, no HSA for you.
The Tax Mechanics Are Different Too
Both accounts provide tax benefits, but through different paths. FSA contributions reduce your taxable income because the money is deducted from your paycheck before taxes are calculated. This means you save on income tax and on payroll taxes. Your employer also saves on its share of payroll taxes, which is one reason employers are generally happy to offer FSAs.
HRA reimbursements are not taxable income to you. When your employer pays a medical bill through the HRA, that payment does not show up on your W-2. The employer deducts the reimbursement as a business expense. You never see the money as income, so there is nothing to tax. From a practical standpoint, the net effect is similar: you pay for healthcare with pre-tax dollars either way. But the mechanical difference matters if you are trying to calculate your adjusted gross income for other purposes, like qualifying for income-based tax credits or student loan repayment plans.
Timing of Access to Funds
FSAs have an unusual feature that works in your favor early in the plan year. Your full annual election is available on day one. If you elect to contribute $3,000 for the year and you have a $2,500 medical bill in January, you can use your FSA to cover it even though you have only contributed a couple hundred dollars through payroll deductions at that point. Your employer fronts the money, and you pay it back through deductions over the rest of the year. If you leave the company mid-year after using more than you have contributed, you generally do not have to pay back the difference.
HRAs work differently because the employer decides how the balance becomes available. Some employers make the full annual amount accessible on January 1. Others release funds monthly or quarterly. There is no IRS rule requiring the full amount to be available immediately, so it varies from plan to plan.
Which One Makes More Sense for Different Situations
If you are an employee choosing between two job offers and one includes an HRA while the other offers an FSA, the comparison is not straightforward because the accounts solve different problems.
An HRA is essentially free money from your employer. You are not giving up any salary to fund it. The downside is that you have no say in the contribution amount or the rules, and if the employer sets a low reimbursement limit or restricts eligible expenses, the benefit may feel thin. HRAs also tend to pair with higher-deductible health plans, with the HRA covering part of that deductible gap.
An FSA gives you control and predictability. You decide how much to set aside, and you know exactly what the IRS considers an eligible expense. The downside is the forfeiture risk. If you consistently overestimate your spending, an FSA can cost you money. People who are healthy and rarely visit the doctor tend to either skip the FSA or contribute very conservatively. People with predictable recurring costs, such as ongoing prescriptions, regular therapy visits, or planned procedures, get the most value from an FSA because they can match their contribution to expected spending.
Some employers offer both. In that case, the HRA might cover large expenses like your deductible while the FSA covers smaller out-of-pocket costs like copays and prescriptions. This layered approach can work well, but you need to understand which account pays first and whether there are coordination rules between them. Your benefits administrator should be able to clarify the order of reimbursement.
Common Misconceptions
One widespread belief is that HRA money is “yours.” It is not. The funds belong to the employer, and if you leave the company, you almost always lose access to whatever remains in the account. Employees sometimes treat HRA balances the way they would treat a bank account balance, assuming the money will follow them. It will not, outside of some narrow exceptions with certain ICHRA designs.
Another misconception is that FSAs can only be used for doctor visits and prescriptions. The eligible expense list is actually quite broad. Sunscreen, first-aid supplies, contact lens solution, acupuncture, and even certain period-care products all qualify. The CARES Act of 2020 permanently expanded FSA eligibility to include over-the-counter medications without a prescription, which had previously required one.
People also assume that having an FSA or HRA means they cannot deduct medical expenses on their taxes. This is partially true but needs context. You cannot double-dip: expenses reimbursed through an FSA or HRA cannot also be claimed as itemized deductions. But if your total unreimbursed medical expenses exceed 7.5 percent of your adjusted gross income, you can still deduct the excess on Schedule A. For most people, this threshold is high enough that it does not come into play, but for those with very large medical bills in a given year, it is worth checking.
When Employers Offer One but Not the Other
Employers are not required to offer either account. FSAs are more common at larger companies because they are relatively straightforward to administer through a third-party benefits provider. HRAs have historically been less common but are gaining traction, especially the ICHRA model. The appeal for employers is flexibility: they can set a defined contribution, avoid the complexity of managing a group insurance plan, and let employees choose coverage that fits their needs.
Small businesses that cannot afford group health insurance increasingly use QSEHRAs or ICHRAs as an alternative. Instead of buying a one-size-fits-all plan for the whole company, they give each employee a tax-free allowance to purchase individual coverage. This shifts the insurance shopping to the employee, which some people appreciate and others find overwhelming. If your employer offers an ICHRA, you are essentially being told to go find your own health plan and submit receipts for reimbursement up to a set limit.
For self-employed individuals, neither a traditional FSA nor a traditional HRA is available. Self-employed people can deduct health insurance premiums directly on their tax return, and they may be eligible for an HSA if they carry a qualifying high-deductible plan. The FSA and HRA world is fundamentally an employer-employee arrangement, which leaves freelancers and sole proprietors looking at different tools entirely.