Payroll Mistakes That Trigger IRS Penalties (and How to Avoid Them)

Payroll looks simple from the outside: pay your people, withhold taxes, send them in. But the IRS treats payroll taxes differently from almost any other tax, because much of that money was withheld from employees’ paychecks and is held in trust. When something goes wrong, penalties stack up quickly — and some can land on you personally.

Here are the payroll mistakes we see most often, and how to avoid them.

1. Depositing payroll taxes late

Federal income tax withholding and Social Security and Medicare taxes must be deposited electronically on a set schedule — monthly or semiweekly, depending on how much tax you reported during a lookback period. Very large payrolls can trigger a next-day deposit requirement.

Miss a deposit and the failure-to-deposit penalty depends on how late you are:

How to avoid it: know your deposit schedule, deposit through EFTPS or your payroll provider, and never “borrow” payroll tax money to cover a cash crunch.

2. Treating employees as independent contractors

Calling a worker a contractor doesn’t make them one. The IRS looks at how much control you have over what the worker does and how they do it, how the financial side of the relationship works, and whether the relationship looks ongoing. Misclassification can leave you owing back employment taxes, penalties and interest, plus state unemployment and workers’ compensation problems.

How to avoid it: review each worker relationship before the first payment. When the answer isn’t clear, get advice. The IRS Voluntary Classification Settlement Program can reduce the cost of correcting past mistakes for eligible employers.

3. Filing payroll returns late — or not at all

Form 941 is due every quarter, by April 30, July 31, October 31 and January 31, even for quarters with no payroll, unless you’ve filed a final return or qualify as a seasonal employer. Form 940 for federal unemployment tax is due each January 31. Late returns trigger a failure-to-file penalty of 5% of the unpaid tax per month, up to 25%, on top of any deposit penalties.

In Georgia, withholding returns go to the Department of Revenue and state unemployment tax to the Georgia Department of Labor — each on its own schedule.

4. Missing W-2 and 1099 deadlines

Forms W-2 and 1099-NEC are due to workers and the government by January 31. Penalties apply to each late or incorrect form, grow the longer you wait and are much steeper for intentional disregard. Mismatched names and Social Security numbers cause problems too, so verify employee information when you hire.

5. Forgetting taxable fringe benefits

Gift cards, cash bonuses, personal use of a company vehicle and reimbursements that don’t follow an accountable plan are generally taxable wages. If they aren’t run through payroll, withholding and payroll taxes are understated — and so are your W-2s.

6. Underpaying S corporation owners

S corporation owners who work in the business must take a reasonable salary through payroll before taking distributions. Paying yourself only through distributions to avoid payroll taxes is a well-known IRS red flag, and the IRS can reclassify those distributions as wages.

7. Falling behind on new rules

Payroll requirements change often. New federal deductions for qualified overtime pay and tips, available for 2025 through 2028, mean employers need to track and report those amounts separately. Georgia also requires employers to report new hires within 10 days. A payroll system that isn’t kept current can drift out of compliance without anyone noticing.

The penalty that follows you home

The most serious consequence is the Trust Fund Recovery Penalty. If withheld income tax and the employees’ share of Social Security and Medicare taxes go unpaid, the IRS can hold any “responsible person” — often an owner, an officer or even a bookkeeper with signing authority — personally liable for 100% of the unpaid trust fund taxes. Operating as an LLC or corporation doesn’t protect you from it.

If you’re already behind

Don’t wait for the IRS to find you. Unfiled payroll returns and missed deposits only get harder and more expensive to fix. Through our IRS problem resolution services, we can file the missing returns, calculate what’s owed, request penalty relief where it applies and negotiate a payment plan.

Make payroll someone else’s job

The simplest way to avoid these mistakes is to hand payroll to specialists. Our payroll services — backed by a Certified Payroll Specialist on our team — cover payroll runs, tax deposits, quarterly and annual filings and W-2s, so deadlines don’t slip through the cracks. Book a free consultation to see how it works.