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Running payroll isn’t anyone’s idea of a good time, unless you happen to really enjoy forms, deadlines, and acronyms. But even if payroll isn’t your favorite task, it’s crucial to take payroll compliance seriously. A few small errors can snowball into penalties, unhappy employees, and unwanted attention from the IRS, Department of Labor, or state agencies. The good news? Most payroll mistakes are preventable once you know what to look for.

5 Common Payroll Compliance Mistakes

Below are five of the most common payroll compliance issues small business owners face and how to avoid them.

1. Misclassifying Employees and Contractors

Employee or independent contractor? It’s one of the most common payroll compliance questions and one of the easiest places to slip up. The IRS uses specific criteria to determine worker status, focused on behavioral control, financial control, and the relationship between the parties.

If you classify someone as an independent contractor when they legally qualify as an employee, you may be responsible for back taxes, penalties, and interest. So when in doubt, review the IRS guidelines and classify workers correctly from the start. Your future self will thank you.

2. Missing Important Payroll Deadlines

Withholding taxes is just the beginning. You also have to deposit them and file the required forms on time. Deposits may be due semiweekly or monthly, depending on the size of your payroll. Federal forms have strict quarterly or annual deadlines. For example:

• Form 941 (the form used to report withholding of income taxes and FICA taxes) is due on April 30, July 31, October 31 and January 31
• Form 940 (the form used to report your annual Federal Unemployment Tax Act tax, also known as FUTA), is due on January 31 to report taxable FUTA wages paid in the previous year

Check out the Employer’s Tax Calendar in IRS Publication 509 for more payroll compliance due dates or use a reputable payroll service, like Gusto.

Late deposits can trigger failure-to-deposit penalties that increase the longer you wait. And because government agencies aren’t known for their flexibility, it’s a good idea to automate reminders or use a payroll provider or payroll software.

3. Incorrect Payroll Tax Withholdings

Using outdated tax tables or incorrect employee data can lead to inaccurate withholding amounts. Under-withholding means a tax bill later; over-withholding means disgruntled employees wondering why their paychecks feel lighter than expected.

The FICA tax rate has been the same for quite a while, but state and local payroll laws can change, and federal income tax brackets adjust every year.

Get Form W-4 from new hires and regularly ask existing employees to provide an up-to-date form. Ensure your payroll system applies the correct federal, state, and local tax rules—Gusto is a great option if your existing payroll software falls short. These simple steps can save you from time-consuming corrections down the road.

4. Failing to Keep Proper Payroll Records

Payroll compliance requires maintaining detailed, accurate records—sometimes for several years. Depending on the agency, you may need to keep payroll registers, timecards, employee information, tax filings, and wage calculations for anywhere from two to seven years.

Not keeping proper documentation can lead to penalties if there’s an audit or wage dispute. Whether you keep them on your own or use payroll software like Gusto, organized records make your life easier and your compliance stronger.

5. Not Paying Employees Correctly or On Time

Federal and state wage and hour rules are strict about payment timing, overtime pay, and minimum wage requirements. Common payroll errors can include:

• Calculating overtime pay incorrectly
• Misunderstanding exempt vs. non-exempt status
• Not realizing state labor laws differ from federal rules (which they often do)
• Not following your state’s rules for paid leave
• Not garnishing an employee’s wages when required for child support, federal student loans, or other court orders
• Not following state law around things like pay stubs, direct deposit, and paper checks

Incorrect or late payments can lead to wage claims and additional penalties. If you hire employees in multiple states, keeping up with varying pay requirements becomes even more critical.

Small Business Payroll Doesn’t Need to Be Painful

Payroll compliance may feel complex, but the biggest risks often come from the smallest oversights. By correctly classifying workers, meeting deadlines, withholding the right taxes, maintaining solid records, and following wage laws, you can avoid costly mistakes and keep payroll running smoothly.

Think of it as an investment in peace of mind (and fewer surprise letters from the IRS).

Need help tightening up your payroll processes? Reach out to Countless. We can review your current payroll setup, identify potential compliance risks, and help you put systems in place that protect your business and keep your payroll process running smoothly. Let’s get you the tax advice you need before small payroll mistakes become expensive problems.