ADP RUN is our top overall pick for accountants, and it's not hard to see why. ADP has spent decades building one of the most trusted payroll and compliance engines in the industry, and RUN packages that enterprise-grade reliability into a platform built for the firms and small businesses accountants serve every day. Its dedicated Accountant Connect portal lets you manage every client from a single dashboard, pull reports, access tax tools, and even earn revenue share — making it purpose-built for professionals who run payroll on behalf of others.
Beyond the basics, ADP RUN automates federal, state, and local tax filing, flags compliance issues before they become problems, and scales effortlessly as clients grow from a handful of employees into multi-state operations. For an accountant who needs accuracy, depth, and a name clients already recognize and trust, ADP is tough to beat.
Key Features
Pros
- Industry-leading reputation and reliability — trusted for 70+ years
- Accountant Connect dashboard purpose-built for multi-client management
- Scales seamlessly from small businesses to complex, multi-state clients
- Deep compliance, tax, and HR tooling under one roof
- 24/7 support and access to HR specialists
Cons
- Pricing isn't published — requires a custom quote
- Some add-on features carry extra fees
Why We Picked It
ADP RUN earns the #1 spot for accountants because it combines the depth and compliance muscle of an enterprise payroll provider with tools built specifically for firms managing multiple clients. The Accountant Connect portal centralizes client payroll, reporting, and tax documents in one place, while ADP's decades of expertise mean filings are accurate and clients stay compliant as they scale. When you need a payroll partner you can stake your firm's reputation on, ADP is the clear overall winner.