How much does Gusto cost compared to ADP?

Gusto starts at $49/mo base + $6/employee/mo. ADP starts around $79/mo (negotiated) + $4-15/employee/mo. Gusto is typically 20-40% cheaper for equivalent scope, and has no setup fee.

When should I switch from ADP to Gusto (or vice versa)?

Switch at year-end whenever possible to avoid partial W-2 confusion. Migration typically takes 2-4 weeks. Most startups under 100 employees should consider switching from ADP to Gusto for the cost and UX improvements.

What about Rippling, Justworks, or Paychex?

Rippling is excellent for tech-forward startups wanting all-in-one HR + IT + payroll. Justworks (PEO) bundles HR + benefits with payroll at flat per-employee fees, roughly $59-109 per employee per month; PEOs like TriNet and Insperity charge 2-5% of payroll instead. Paychex is comparable to ADP at enterprise scale. Most pre-Series C startups land on Gusto or Rippling.

Comparison · 2026 Update

ADP vs Gusto for startups

For venture-backed startups under ~250 employees: Gusto wins on UX, price, and founder-friendliness. ADP wins above 250 employees, in regulated industries, or where you need the deepest benefits brokerage relationships.

Most startups overpay for ADP because a sales rep signed them up at incorporation without comparing. Switching isn't painful: typically 2-4 weeks, done at year-end.

When each one wins

Pick Gusto if:

You're under 100 employees (most venture-backed startups pre-Series C)
You value UI/UX and want a system your founders and ops team can navigate
Cost matters: Gusto is typically 20-40% cheaper at the same plan level
You're paying both W-2 and 1099, with contractors included in all plans
You want clean reporting and API access for accounting integration
Your accountant or fractional CFO already uses Gusto (most modern firms do)

Pick ADP if:

You're scaling above 250 employees and want enterprise-grade tools
You're in a regulated industry needing white-glove compliance support
You need deep benefits brokerage relationships (better access to plans and carriers)
You operate globally and need ADP GlobalView for international payroll
You have complex union or multi-currency payroll needs
Your HR team has deep ADP expertise already

Also worth comparing: Rippling (all-in-one HR + IT + payroll for tech-forward startups), Paychex (ADP alternative with similar enterprise scale), Justworks (PEO model with HR + benefits bundled).

Feature comparison

Feature	ADP	Gusto
Starting base price	$79+/mo (Run plan, varies by sales rep)	$49/mo (Simple plan)
Per-employee cost	$4-15/mo depending on plan	$6/mo (Simple) to $12/mo (Plus)
Setup fee	Often $200-500 (negotiable)	None
UI/UX	Older, less intuitive; designed for HR pros	Modern, founder-friendly
Multi-state coverage	Excellent (50 states)	Excellent (50 states)
Contractor (1099) payments	Yes, separate per-contractor fee	Included in all plans
International contractors	Yes (via ADP GlobalView, $$$)	Yes (Plus tier and above)
Benefits broker	Strong; deep insurer relationships	Good for small startups; thinner for 50+ headcount
Health insurance integration	Native through ADPIA broker	Native through Gusto Insurance Agency
401(k) integration	Native through ADP Retirement	Native through Guideline/Vestwell partnership
Reporting depth	Comprehensive but clunky to extract	Cleaner reports; better API access
Customer support	Dedicated rep at higher tiers; otherwise call center	Email/chat; phone with paid plans
Scales to 500+ employees	Yes; ADP Workforce Now is enterprise-grade	Stretches but typically swap by 250-500 EE
Equity comp + ASC 718 integration	Limited; requires manual workpapers	Basic; Carta integration helps

Public pricing as of 2026 where available. Confirm current rates directly with each provider.

Want help picking + setting up payroll the right way?

30 minutes with a CPA. We'll walk through your headcount, multi-state exposure, and benefit needs to recommend the right provider for your stage.

Common mistakes

Sticking with ADP because “we’ve always used them”

ADP often signed you up at incorporation through a referral. Most startups under 100 employees overpay 20-40% vs Gusto for the same scope. Worth a comparison + likely switch.

Switching mid-year and breaking W-2 continuity

Year-mid switches require both systems to produce partial W-2s, which is confusing for employees and creates extra accountant work. Schedule switches for year-end whenever possible.

Underestimating PEO costs at scale

PEOs charge either flat per-employee fees (Justworks, roughly $59-109 per employee per month) or 2-5% of payroll (TriNet, Insperity). On a percentage model, a $5M payroll runs $100K-250K/yr, much more than Gusto's flat-fee model. PEO only makes sense if you're getting materially better benefits or HR support.

How StartupCFO works with your payroll provider

We coordinate with Gusto, ADP, Rippling, and Justworks

Keep your existing payroll provider. We work at the data level, reconciling payroll into your ledger so ClariFi can report per-employee unit economics, tying out payroll tax filings, and catching multi-state nexus before audit. If you don't have a payroll provider yet, we run payroll for $50/W-2/mo (payroll add-on available on Foundation and Growth plans).

Read the payroll setup guide

We integrate with both, and migrate between them

StartupCFO clients run on Gusto, Rippling, ADP, and Justworks. We set up payroll properly the first time and manage migrations between providers without breaking monthly close.

Read our payroll setup guide

Compare other options

Most founders weigh several of these at once. Here is the rest of the set.

See all comparisons