Top 5 Payroll Software That Automate Taxes for US Startups Under $50 Let’s be honest—payroll is a headache. Especially for US startups, getting employee salaries, tax withholdings, and IRS filings wrong can land you in serious trouble with penalties worth thousands of dollars. But here’s the good news: You don’t need to hire a fancy CPA or buy expensive software. In 2026, there are some incredibly smart, cloud-based payroll tools that automate your federal, state, and local taxes automatically —and they cost less than $50 per month . I have tested and shortlisted the absolute best 5 payroll services for US startups that handle everything from W-2 filing to direct deposits without breaking the bank. Top 5 Payroll Software for US Startups (2026) 1. Gusto – Best Overall for Small Teams Gusto is the gold standard for US startups. It handles full-service payroll, health insurance sync, and automatically files your federal, state, and local payroll taxes. Best For: ...