Gusto is the strongest pick for 1-50 employee businesses that want a single platform for payroll, benefits, and HR. The mobile app is rated 4.7/5 on iOS and Android, and the onboarding flow takes roughly 20 minutes from signup to first payroll run. The main weakness is multi-state payroll past 10 state filings in a single quarter - the UI gets cumbersome and the per-employee fee is higher than ADP Run for very large teams (Gusto, September 2026).
ADP Run deep dive
ADP Run is the right call for 20+ employees, particularly those with multi-state operations. ADP's automated new-hire reporting, multi-state W-2 generation, and regulatory-compliance team are the deepest in the industry. ADP Run starts at $79/month plus $4-$9/employee and goes up to $180/month plus $15/employee for the premium tier. The RUN Powered by ADP HR toolkit is included in the mid-tier and adds HR policies, job descriptions, and compliance alerts (ADP Run, September 2026).
ADP's pricing is the most negotiable in the industry. Small businesses should ask for a 10-15% volume discount past 25 employees and should request a multi-year contract for the best rate. ADP's main weakness is the user interface, which is more complex than Gusto or OnPay. For 20+ employees with dedicated HR staff, ADP Run is the strongest pick; for 1-20 employees without HR support, Gusto is easier to use (ADP Run, September 2026).
QuickBooks Payroll deep dive
QuickBooks Payroll is the best fit if you already use QuickBooks Online for accounting. The integration is the tightest in the market - payroll journal entries post to the right GL accounts automatically, and the chart-of-accounts mapping is configurable. QuickBooks Payroll Core is $50/month plus $4/employee, Premium is $85/month plus $8/employee (adds HR support and 1099 e-filing), and Elite is $125/month plus $10/employee (adds same-day direct deposit and a dedicated payroll specialist) (QuickBooks Payroll, September 2026).
For businesses not on QuickBooks Online, the integration advantage disappears and the platform is less compelling than Gusto or OnPay. QuickBooks Payroll also handles contractor payments well at $4/contractor, with automated 1099-NEC generation. The main weakness is the per-employee fee model, which is the same as Gusto Core but with less HR support (QuickBooks Payroll, September 2026).
Paychex Flex and OnPay
Paychex Flex is the deepest in dedicated HR support. The PEO (Professional Employer Organization) option co-employs your staff and handles HR, benefits, and workers' comp insurance, starting at $99/month plus $50-$150/employee. PEO pricing is higher than non-PEO but it removes a meaningful amount of HR overhead for 50+ employee operations in regulated industries. For non-PEO use, Paychex Flex starts at $39/month plus $5/employee, which is the lowest entry price in this comparison (Paychex Flex, September 2026).
OnPay is the budget pick at $40/month flat plus $4/employee with full federal and state tax filing in all 50 states. OnPay serves roughly 10,000 small businesses and is the strongest pick for 10 or fewer employees where Gusto and ADP's per-employee fees add up. The main weakness is limited HR support - OnPay includes a basic HR library but no certified HR advisors. For businesses with 10 or fewer employees and no HR complexity, OnPay is the right call (OnPay, September 2026).
Which payroll software should you choose?
For 1-50 employees with no QuickBooks Online usage, start with Gusto Complete at $80/month plus $12/employee. For 20+ employees with multi-state payroll, request ADP Run pricing and ask for a volume discount. For QuickBooks Online users, the QuickBooks Payroll Premium tier at $85/month plus $8/employee is the lowest-friction path. For 50+ employees with dedicated HR support needs, evaluate Paychex Flex PEO at $99/month plus $50-$150/employee. For 10 or fewer employees on a budget, OnPay at $40/month flat plus $4/employee is the strongest value. For related HR and benefits decisions, see our best CRM comparison and our ERP training.
Fazlur Rahman
