Fringe benefits can save business owners thousands of dollars in taxes. uition help, dependent care, and health reimbursements can provide tax-free benefits for eligible employees, but owners face additional rules based on the benefit and business structure.
They’re also one of the most common places we see things go wrong. And when a benefit fails, the money you thought was tax-free can turn into taxable wages, with payroll taxes attached. The good news is that most of these mistakes are easy to avoid once you know where to look.
Why Do Fringe Benefits Go Wrong So Often?
Most fringe benefit problems come from good intentions and missing paperwork. Owners want to take care of their people and themselves, so they start paying for things before the structure is in place.
That’s understandable. You’re running a business, and a formal plan document doesn’t feel urgent when you’re trying to help an employee with daycare costs. But the IRS looks at structure first. Three mistakes come up again and again.
Do I Really Need a Written Plan for Employee Benefits?
For many benefits, yes. Educational assistance, dependent care assistance, and health reimbursement arrangements generally require a formal written plan. Without one, the benefit can become taxable compensation.
Here’s what that looks like. Educational assistance lets you give each employee up to $5,250 a year in tax-free help with tuition or student loan payments. Dependent care assistance can cover up to $7,500 a year for child care starting in 2026. Both only work with a written plan in place.
Picture Jenna, who owns a dental practice and pays $5,250 toward her office manager’s degree to help retain a great employee. Without a written educational assistance plan, that payment could become taxable wages unless it qualifies under a separate rule for job-related education. Technical: “She never set up a plan, so that $5,250 is taxable wages” and “A plan written after the fact won’t fix payments you’ve already made” make the outcome too categorical. Certain job-related education can qualify as a working condition fringe benefit without a written educational assistance plan, so missing the plan does not automatically make the payment taxable.
Our firm stance: put any required written plan in place before making payments. Don’t assume paperwork prepared later will make earlier payments tax-free.
What Are Nondiscrimination Rules, and Why Do They Matter?
Many fringe benefits must follow nondiscrimination rules. In plain English, the benefit can’t mostly help owners or highly compensated employees.
This is the second big mistake: ignoring eligibility rules. An owner sets up a benefit, but only the owner and one top manager actually qualify. On paper it’s a company benefit. In practice it’s a perk for the people at the top, and the IRS can treat it as taxable.
Some benefits add their own limits. With educational assistance, for example, no more than 5% of the total benefits paid in a year can go to owners who hold more than 5% of the business. A small company where the owner is the main person using the benefit can run into this without realizing it.
Define eligibility in the plan, then check the benefit’s specific nondiscrimination tests and owner limits. Offering it to everyone may not be enough if owners receive too much of the total benefit.
What Kind of Documentation Does the IRS Expect?
The IRS expects you to prove what was paid, who it was paid for, and why it qualifies. Poor documentation is the third mistake, and it’s the one that catches the most owners off guard.
Missing receipts and reimbursement records can turn an otherwise tax-free payment into taxable wages.
For employee business-expense reimbursements, an accountable plan generally keeps qualifying payments out of taxable wages. That means each expense has a business purpose, it’s backed up with receipts or logs within a reasonable time, and any extra money is paid back. Skip those steps, and reimbursements can be treated as wages.
Keep it simple. Save receipts in one place, write down the business reason, and reimburse through a consistent process instead of whenever someone remembers.
If you’d like to see how the IRS explains these rules, IRS Publication 15-B, the Employer’s Tax Guide to Fringe Benefits, is a helpful resource: https://www.irs.gov/publications/p15b
What Happens If the Reporting Steps Get Missed?
Miss a step, and the benefit can turn into incorrect wages or a lost deduction. This usually happens because owners are busy, not because they don’t care.
The most common slip we see: the owner pays premiums personally, but the S corp never reimburses them or reports them on the W-2. A W-2 reporting error can be corrected, but if the company didn’t pay or reimburse the premiums during that tax year, the owner generally can’t claim the self-employed health insurance deduction for those premiums.
The opposite happens too. The S corp pays the premiums and deducts them as an insurance expense, but they never make it onto the owner’s W-2. Now the wages are understated, and the return doesn’t match what the IRS expects.
Our take is simple: have the S corp pay or reimburse your premiums, and tell your payroll provider before your last payroll of the year. A December email can save you a real headache in April.
If you’d like to read more about how the IRS handles employee benefits, IRS Publication 15-B, the Employer’s Tax Guide to Fringe Benefits, is a helpful resource: https://www.irs.gov/publications/p15b
What Does It Cost If a Fringe Benefit Fails?
A failed benefit usually means extra payroll taxes, extra income tax, and the work of correcting W-2s. In some cases penalties and interest follow.
Say an S corp reimburses its owner $12,000 for vehicle expenses without records supporting the business mileage. If the full amount becomes taxable wages and falls below the Social Security wage limit, combined employer and employee Social Security and Medicare taxes would total $1,836, with income tax potentially due as well.
None of that is meant to scare you. It’s a reminder that a little setup work protects savings you’re already counting on.
How Can I Tell If My Fringe Benefits Are Set Up Correctly?
Start with three questions:
• Do I have a written plan for each benefit that needs one?
• Is the benefit offered fairly to eligible employees, not just owners and top earners?
• Could I show receipts and records for every payment if the IRS asked?
If you hesitated on any of those, schedule a benefits check before year-end payroll closes. A fall review can identify needed changes and payroll reporting issues, but some mistakes cannot be corrected retroactively.
Where Can I Learn More About Specific Fringe Benefits?
Fringe benefits are powerful tools, but only when they’re structured correctly. To help you see how each one works, we released a full video series that breaks them down one at a time.
The series covers topics like how health insurance is treated for C corps and S corps, and how group term life insurance is tax-free up to $50,000 of coverage. If you’re thinking about adding a benefit, it’s a good place to start.
How Can We Help You Set Up Fringe Benefits the Right Way?
You don’t have to figure out plan documents, eligibility rules, and recordkeeping on your own. At J.R. Martin & Associates, we help business owners evaluate potential tax savings and put the required benefit plans, eligibility rules, and records in place.
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Our comprehensive tax planning and strategic tax advice help you choose the right benefits for your business. Our bookkeeping keeps reimbursements and records organized all year. And our business consulting helps you design benefits that support your team and your goals.
Your facts matter, so talk with a qualified adviser before you move forward. When you’re ready, reach out to schedule a no-pressure conversation. Let’s work together to make sure your benefits are doing what you meant them to do.