What are the best payroll software tools for growing startups?

For **growing startups**, the strongest payroll tools are usually **Gusto**, **Rippling**, **Justworks**, **ADP Run**, and **OnPay**, with the best choice depending on whether you prioritize simplicity, HR/IT automation, PEO-style support, or multi-state/global scaling.[1][2][6]

- **Gusto** — best for early-stage and growing startups that want **easy setup**, **automatic tax filing**, contractor-to-employee support, benefits administration, and clean accounting integrations.[1][2][4]

- **Rippling** — best for startups that want payroll plus **deeper HR/IT automation** and stronger support for **rapid scaling**.[1][2][6]

- **Justworks** — best if you want a **PEO** that bundles payroll, benefits, HR, and compliance support in one system.[1][2]

- **ADP Run** — best for startups expecting **multi-state complexity** or needing a more enterprise-style platform that can grow with them.[1][5]

- **OnPay** — a strong fit for small businesses and startups that want a straightforward payroll product with good scalability and a simpler implementation path.[1]

A practical way to choose is:

- **Small, simple startup:** Gusto[1][2][4]

- **Fast growth with HR/IT needs:** Rippling[1][2][6]

- **Want bundled benefits and compliance help:** Justworks[1][2]

- **Multi-state or more complex payroll:** ADP Run[1][5]

- **Need a straightforward, cost-conscious option:** OnPay[1]

If you want, I can also give you a **short ranked list by startup stage** or a **comparison table by price, features, and best use case**.