Gusto vs ADP comes down to your stage. Gusto suits small US businesses hiring their first people who want simple, self-serve payroll and benefits. ADP suits businesses that want a dedicated rep, broader HR and insurance services, or plan to grow into a large, multi-site employer.
Running payroll for the first time is one of those jobs that feels simple until it isn't. Miss a tax filing or pay someone late and you'll know about it fast. Gusto and ADP are two of the most common answers for US businesses, and they suit very different stages of growth.
Who each one is built for
Gusto was built for small businesses that want payroll, benefits and onboarding in one clean app. It's popular with startups, agencies, shops and anyone hiring their first few people. ADP is one of the oldest payroll companies in the US. It serves everyone from tiny businesses through its RUN product up to large employers through Workforce Now and its enterprise platforms.
Both handle the core job: paying people, withholding and filing payroll taxes, and producing year-end forms such as W-2s and 1099s. Both are US-focused. If you employ people in the UK, you'll need UK payroll software instead, and my guide to the best payroll software for small businesses covers that.
Pick by stage, not by brand
Your first hire to around ten people
Gusto usually wins here. Setup is guided, employees onboard themselves, and running payroll takes a few clicks. Contractor payments, simple benefits and state registrations sit in the same place. ADP RUN works well too, especially if you like having a named rep to call, but it can feel more like a traditional service than a self-serve app.
A growing team with HR needs
This is where it gets closer. Gusto adds time tracking, performance tools and HR support on higher tiers. ADP offers a deeper bench of HR, compliance and insurance services, and it's used to supporting businesses that are adding locations or managers. If you want one company to grow with for many years, ADP's range is the bigger draw.
Multiple states, complex benefits or a large workforce
ADP is the more natural fit. Its Workforce Now platform is built for HR teams, complex benefits administration and reporting across lots of people. Gusto handles multi-state payroll, but larger employers often want the extra configuration ADP offers.
The differences you'll feel day to day
| Area | Gusto | ADP |
|---|---|---|
| Setup | Self-serve and guided | Often set up with an ADP rep |
| Running payroll | Very simple app | Simple in RUN, more options in Workforce Now |
| Support style | Online first, with phone support | Dedicated reps on many plans |
| HR tools | Onboarding, time off, performance on higher plans | Wide HR, compliance and insurance services |
| Benefits | Health, retirement and perks through partners | Large benefits and insurance offering |
| Contract terms | Month to month | Varies by product and quote |
| Best fit | Startups and small teams | Small to very large employers |
Gusto shows its plans publicly. ADP often quotes based on your business, so ask for a written quote and a list of everything included.
What switching on payroll involves
Whichever provider you choose, the first payroll takes the most work. You'll need your federal employer identification number, state tax account numbers for every state where you have employees, bank details for the business, and each employee's tax withholding form and direct deposit details. If you've already paid people earlier in the year through another system, you'll also need year-to-date totals so the year-end forms are right.
Gusto walks you through these steps in its app and can register you with some state agencies. ADP usually assigns someone to collect the details and set things up with you. Either way, give yourself a couple of weeks before your first pay date, and run a test payroll if the provider offers one. Most problems in the first month come from a missing state account number or a typo in a bank account, and both are easy to catch early.
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Questions to ask in a demo
- Which taxes and forms do you file for me, and which am I still responsible for?
- What happens if you make a filing mistake? Do you cover penalties?
- How do I pay contractors and employees in other states?
- Can my accountant get their own login?
- Which time tracking, accounting and HR tools do you connect with?
- Is there a setup fee, a contract length or a cancellation charge?
- How easy is it to export all my payroll history if I leave?
Things people regret
- Signing an annual contract before they've run a single payroll.
- Choosing based on headline plans and then paying for add-ons they assumed were included.
- Forgetting to connect payroll to their accounting software, then fixing journal entries by hand every month.
- Running time tracking in a separate tool that doesn't sync. If you track hours, see my guide to time tracking software.
My verdict
If you're a small US business hiring your first people and you want something you can set up yourself this week, start with Gusto. If you want a dedicated rep, broader HR and insurance services, or you expect to grow into a large, multi-site employer, ADP is the safer long-term bet. Book a demo with both and ask the same questions, then pick the one whose answers you understood.
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Frequently asked questions
Is Gusto or ADP easier to use?
Most small business owners find Gusto easier because it was designed as a self-serve app with guided setup. ADP RUN is also straightforward, and ADP usually gives you a rep to help with setup and questions.
Is Gusto or ADP better for small businesses?
Gusto usually suits small businesses better because it's self-serve, simple and transparent. ADP suits small businesses that want a dedicated rep or expect to grow into a larger employer.
Does Gusto or ADP file payroll taxes for me?
Both calculate, file and pay federal and state payroll taxes on your behalf on their full-service plans. Check exactly which local taxes and forms are included for your state.
Can I use Gusto or ADP for UK employees?
No, both focus on US payroll. For UK staff you'll need UK payroll software that handles PAYE and Real Time Information reporting to HMRC.
Is it hard to switch from ADP to Gusto?
It's manageable. Switch at the start of a quarter if you can, so your tax filings line up, and get a full export of your payroll history first.
Does ADP require a contract?
It depends on the product and your quote. Ask for the contract length and cancellation terms in writing before you sign.
