Payroll Service

August 6, 2026

What is a payroll service and when should employers use one?

A payroll service is a third-party provider that handles payroll processing for employers, including gross-to-net calculation, tax withholding and remittance, direct deposit, and year-end reporting. Major U.S. payroll services include ADP, Paychex, Gusto, Rippling, QuickBooks Payroll, and OnPay. Most employers outsource payroll because the compliance complexity and cost of getting it wrong exceed the cost of using a service.

Payroll service outsourcing is the dominant model in U.S. employment. BLS and ADP data suggest roughly 80% of employers with 10 or more employees use a payroll service rather than running payroll internally. The reasoning is straightforward: payroll tax rules change constantly at federal, state, and local levels; miscalculation produces penalties and employee complaints; and the in-house expertise required to do it well doesn't scale below a certain size.

Major Payroll Services and Their Fit

ADP: enterprise and mid-market, most features, highest price. Paychex: similar to ADP at slightly smaller scale. Gusto: small/mid-market, design-forward UX. Rippling: mid-market, tightly integrated with HRIS and IT. QuickBooks Payroll: small business, integrated with QuickBooks accounting. OnPay: small business, price-competitive.

What Payroll Services Actually Do

Gross-to-net calculation including overtime, pre-tax deductions, garnishments. Federal, state, and local tax calculation and remittance. Direct deposit. Pay stub generation. W-2 and 1099 year-end reporting. New hire state reporting. Workers' comp premium tracking. Benefits deduction integration.

Pricing Models and Total Cost

Per-employee-per-month is dominant: $4-$15/employee/pay period. Add-ons for year-end W-2, multi-state, HR tools, and benefits administration. Most employers underestimate total cost.

Choosing a Payroll Service That Matches Your Operational Reality

Size fit and integration matter more than feature breadth. Small: prioritize simplicity. Mid-market: prioritize integration with HRIS. Enterprise: prioritize compliance depth. See payroll for process and compensation for upstream design.