Switch to the nation’s largest PEO for all your HR needs

Partner with ADP’s award-winning PEO for access to top-tier benefits and a personalized service experience that stands above the rest.

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ADP's top-rated PEO

Best Customer Service Among PEOs

2025

Contact Center of the Year - ADP MyLife Advisors

ADP Outsourcing | 2022-2025

#1 PEO for Small Business Owners

2025

Real expertise. Real support. The real deal.

Working with the nation’s largest PEO doesn’t just mean increased buying power for world-class benefits — it also means always-on, expert support that acts as an extension of your own team.

Bonded ESAC Accredited IRS Certified

Our ESAC accreditation and IRS certification are proof we always do things the right way.

732,000 employees in 50 states

The combined buying power of 732k employees gives you industry-leading benefits.

ADP 75 years

With 75 years of unmatched HR & payroll experience, we’re ready to guide you through anything.

1:1 Support

Get personalized support and guidance from your HR business partner, the go-to HR expert assigned to your business.

Welcome to the next level of HR support

A dedicated HR pro — just for you

Our 75 years have taught us many things, but chief among them: Better service for clients results in better outcomes for their business. That's why you'll have a direct line to your dedicated HR expert, who knows your business inside and out.

Our team is always here for your team

We’re here to provide a more supportive experience for your employees, too. ADP MyLife Advisors answer challenging questions and personally walk your people through the ins and outs of tricky topics such as paid leave or adding a dependent to benefits. And they do it with remarkable efficiency and success:

  • 89% first-call resolution rate
  • 90% client satisfaction rating
Contact Center of the Year Awarded to ADP MyLife Advisors Winner of the Gold 2023 Stevie Award for Sales and Support

CUSTOMER TESTIMONIAL

I trust the team we have in place, and their knowledge was so vast compared to the other PEOs we considered. When it comes to responsiveness, they’re unparalleled. I haven’t seen anything like it.

Tony Reid Director of Human Resources, , JMT Consulting

With ADP TotalSource, you get big-business benefits with small-business attention

We’re using our strength for good by empowering small and midsized businesses across the country to do more, every day, in the areas that matters most.

Hiring and onboarding

Take the stress out of hiring with our integrated recruiting and applicant tracking tool, and make onboarding easy with ADP’s top-rated mobile app handling all your HR ‘paperwork’.

Compliance expertise plus shared liability

As a PEO client, your compliance risk is shared by ADP, keeping you better protected than you would be on your own.

30% more time back in your day

Clients who use our PEO report that they save 30% more time — allowing them to go where their business needs them most.

The nation’s largest PEO means more possibilities for your business

CUSTOMER TESTIMONIAL

In essence, a relatively small organization like MUD gains access to Fortune-500 company benefits. It’s a comprehensive solution and at a significant cost savings.

Cindy Jacuk Controller and CFO, Make-Up Designory

Tech designed to make a difference — no matter how you do business

CUSTOMER TESTIMONIAL

In the past, I would have to access as many as 10 different websites to accomplish what I needed to. Now, the inclusiveness of TotalSource allows me to find everything I need — payroll, HR, insurance, training — all in one platform

Lindsey Tyler Human Resources and Accounting Manager, Worldwide Technologies

Tailor TotalSource to your unique needs

Every business and every industry has its own demands and ways of doing things — yours is no different. That’s why TotalSource gives you the option to integrate with hundreds of leading business apps across industries, and even create custom APIs if and when you need them.

Resources and insights

PEO Benefits Small Business

insight

Benefits of a PEO for small businesses

guidebook

Why Partnering With a PEO Makes Sound Business Sense

guidebook

Take payroll and HR administration off your plate. And reap the rewards.

FAQs

How much does ADP TotalSource cost?

Contact ADP TotalSource to get a custom quote for your business.

Here's how current users are saying TotalSource has impacted their bottom line.

“With ADP TotalSource our top line and bottom line have been enhanced. The time savings we get are repurposed to drive sales. The cost of retaining TotalSource is less than sourcing all the solutions individually and then hiring a manager to oversee it.” –CEO, Professional Services

“Our ADP representatives are full of knowledge and will get us answers to questions quickly. And ADP TotalSource is saving us a lot of money.” –VP of HR and Administration, Manufacturer

How can small businesses manage rising healthcare costs in 2026?

In 2026, small businesses are facing the highest healthcare cost increases in 15 years. Small group employer-sponsored plans are experiencing renewals as high as 30%, driven by external market pressures, including rising pharmaceutical costs and changes to the Affordable Care Act (ACA). Unlike open market small group plans, a PEO like ADP TotalSource stabilizes these costs by moving small businesses into a large group risk pool. By leveraging its massive scale and buying power, ADP TotalSource secures large-group rates, helping to mitigate severe price fluctuations and provide greater cost predictability than the open market typically allows.

Is ADP TotalSource a certified PEO?

Yes, ADP TotalSource has met all the rigorous background, financial and reporting requirements set by the IRS. This certification ensures financial protections and tax benefits to TotalSource clients that users of non-certified PEOs do not necessarily receive. ADP TotalSource helps ensure your federal employment taxes are paid.

Which platforms does ADP TotalSource integrate with?

TotalSource has pre-built, secure integrations and data connectors with over 300 business software applications and leading payroll, HR and financial systems. ADP can also create a custom API (or integration) if you need data integration with a system we don’t already integrate with.

How easy is it to implement ADP TotalSource?

We make it easy by working with you every step of the way. First, you’ll assign a team member from your end to partner directly with us. We’ll take care of all the heavy lifting, but we want to make sure you’re staying close throughout the process, overseeing setup and system tests. On average, this amounts to a time commitment of about one hour per day for the first few weeks.

From there, you’ll meet your dedicated ADP Human Resources Business Partner, who will take you through the different ways we can help you manage your workforce across benefits, compliance, training, hiring, retention, and more. You'll also learn about the experts and specialists across many disciplines working behind the scenes for you. You can expect to be up and running with TotalSource in a few weeks.

What kind of qualifications or certifications does my HRBP have?

ADP's HRBPs are credentialed HR professionals with extensive experience, plus at least one highly relevant certification in Human Resources management, such as:

  • Professional in Human Resources (PHR)
  • Senior Professional in Human Resources (SPHR)
  • Society for Human Resource Management Certified Professional (SHRM-CP)
  • Society for Human Resource Management Senior Certified Professional (SHRM-SCP)
  • Master of Human Resource Management (MHRM)
  • Certified Human Resource Specialist (CHRS)

How does ADP TotalSource have my back?

We stand by our guidance and, to help protect your bottom line, we provide every ADP TotalSource client with Employment Practices Liability Insurance (EPLI), which provides coverage for covered wrongful employment practices including discrimination, wrongful termination, and harassment. ADP TotalSource clients are not required to carry their own EPLI policy. We've got you covered.

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