Payroll taxes fall into two categories: what you withhold from employee paychecks and what you pay as the employer. Both require calculation, timely deposits, and quarterly reporting. Getting any part wrong results in penalties that accumulate quickly.

From each paycheck, you withhold federal income tax based on the employee’s W-4 form, Social Security tax at 6.2% of wages up to the annual limit, and Medicare tax at 1.45% of all wages. Employees earning above $200,000 also have an additional 0.9% Medicare tax withheld. These aren’t your money. You’re holding them in trust for the IRS until you deposit them.

As the employer, you pay matching Social Security and Medicare taxes. When you withhold 6.2% for Social Security and 1.45% for Medicare from an employee, you owe the same amounts on top of that. You also pay federal unemployment tax (FUTA) at 6% on the first $7,000 of each employee’s wages, though credits for state unemployment payments usually reduce this to 0.6%.

Florida doesn’t have state income tax, so there’s nothing to withhold for the state. However, you do pay Florida reemployment tax, which is the state’s version of unemployment insurance. New employers start at 2.7% on the first $7,000 per employee annually. Your rate adjusts over time based on your claims history.

Deposit schedules depend on your total tax liability. Most small businesses deposit monthly, with payments due by the 15th of the following month. Larger payrolls require semi-weekly deposits. Miss a deposit deadline and the IRS assesses penalties starting at 2% and climbing to 15% for amounts over 10 days late.

Quarterly, you file Form 941 reporting wages paid, taxes withheld, and employer taxes owed. This is due by the end of the month following each quarter. You also file state unemployment reports with Florida’s Department of Revenue on a similar schedule.

At year end, you issue W-2s to employees by January 31 and file copies with the Social Security Administration. Annual FUTA tax gets reported on Form 940 by January 31 as well.

The calculations themselves aren’t difficult with the right tools. The challenge is the consistency and timing. Every pay period requires accurate withholding. Every deposit deadline is firm. Every quarterly return must reconcile with what you’ve deposited. One missed deadline or calculation error creates a cascade of notices and penalties.

Most B2B service companies and other growing businesses either use payroll software that handles calculations and filings automatically or outsource payroll entirely. The cost of professional payroll processing is predictable. The cost of payroll tax mistakes is not.

If you have an internal bookkeeper handling payroll, make sure someone with financial expertise is reviewing the process regularly. Premium business accounting in Boca Raton includes oversight of payroll tax compliance as part of controller-level review. Catching errors before they become IRS notices saves money and stress.