The answer depends on how many employees you have, which states they work in, and how much your time is worth. For most small business owners, the break-even point for outsourcing is lower than they expect.

Payroll isn’t just calculating wages and cutting checks. You’re responsible for federal income tax withholding, Social Security and Medicare taxes, state income tax, unemployment taxes at federal and state levels, and potentially local taxes. Every paycheck requires precise calculations based on current tax tables and employee W-4 elections.

Beyond each paycheck, you need to deposit withheld taxes on schedule. The IRS penalizes late deposits immediately with no grace period. You also file quarterly 941 forms, prepare year-end W-2s and W-3s, and handle state-specific reporting. Miss a deadline or calculate wrong and penalties start accumulating fast.

DIY payroll can work if you have one or two employees in a single state, use reliable payroll software to handle calculations and filings, and you have time to stay current on tax law changes. Software like QuickBooks Payroll or Gusto runs $40-$80 per month plus per-employee charges. You’re still responsible for entering data correctly and making sure deposits happen on time.

A managed payroll service makes more sense when you have multiple employees, operate in more than one state, don’t have time to manage the details, or simply don’t want the liability. The service handles calculations, tax deposits, filings, and compliance updates. You approve hours and they handle the rest.

When comparing costs, factor in your time. Processing payroll yourself takes 2-4 hours per pay period for a small team when you include reviewing, calculating, paying, and record-keeping. A payroll service might cost $100-200 per month, but it eliminates that time plus the risk of errors. If your hourly rate is more than $30-40, the math usually favors outsourcing.

Payroll errors create problems beyond penalties. Employees who get shorted lose trust. Tax mistakes compound with interest. Audit triggers for payroll issues can lead to broader examination of your books. Many Merrimack Valley bookkeepers see business owners who tried DIY payroll and ended up spending more on penalties and cleanup than they would have spent on a service from the start.

For most businesses with more than a handful of employees, the question isn’t whether you can handle payroll yourself. It’s whether that’s the best use of your time given the risk involved. If you’re consistently struggling with deadlines or worried about making mistakes, that’s your answer.