Payroll processing costs depend on three main things: how many employees you have, how often you run payroll, and whether you handle it yourself with software or pay someone else to do it.

If you go the software route with platforms like QuickBooks Payroll, Gusto, or ADP Run, expect to pay a base fee of $40 to $80 per month plus $6 to $12 per employee per month. So a business with five employees paying biweekly might spend $100 to $140 per month. These platforms handle calculations, direct deposits, tax filings, and year-end W-2s. The catch is you still need to enter hours, verify everything looks right, and troubleshoot when something goes wrong.

Outsourcing to an accounting firm typically starts around $75 per month for a handful of employees on a monthly pay schedule. That price goes up with more employees, more frequent pay runs, and additional complexity like different pay rates, overtime tracking, or garnishments. A business with 10 to 15 employees running biweekly payroll might pay $200 to $400 per month with a local provider. What you get for that cost is someone else handling the entire process from start to finish, including quarterly filings and year-end forms.

Florida businesses have one advantage here. There’s no state income tax, which means no state withholding calculations or state payroll tax filings for your employees. You still handle federal withholding, Social Security, Medicare, and federal unemployment tax, but one less layer of complexity can translate to slightly lower costs with some providers.

What typically drives costs higher is pay frequency. Running payroll weekly instead of biweekly doubles the number of pay runs per month. Each run takes time to process, verify, and file. If you can move to biweekly or semi-monthly without causing problems for your employees, that alone can reduce what you pay.

Watch for hidden costs in any payroll arrangement. Some software platforms charge extra for year-end W-2 processing, quarterly tax filings, or adding new employees mid-year. Others bundle everything into the monthly fee. Ask what’s included before you commit. A lower monthly rate that charges $100 extra for W-2s and $50 per quarterly filing isn’t actually cheaper.

The penalties for payroll mistakes make this worth getting right. Late federal tax deposits trigger penalties starting at 2% and going up to 15% depending on how late they are. Filing quarterly forms late adds more penalties on top. Misclassifying employees as contractors can result in back taxes, interest, and penalties that far exceed what you would have spent on proper payroll processing.

For most small businesses with fewer than five employees, payroll software works fine if you’re comfortable managing it. Once you get beyond that or if you’d rather not think about payroll at all, outsourcing makes sense. The monthly cost is predictable, the compliance burden shifts to someone with experience, and you free up time to focus on running the business.

The real question isn’t just what payroll costs per month. It’s what your time is worth and how much risk you’re comfortable carrying. Spending two hours every pay period on payroll when you could be generating revenue is a hidden cost that doesn’t show up on any invoice. Pairing payroll with small business bookkeeping often brings the per-service cost down and keeps your financial records consistent across the board.