Paychex vs ADP (2026): Picks Under and Over 50 Staff
Paychex vs ADP is two decisions: under 50 staff it is Paychex Flex against ADP RUN, both quote-based near $80-$145 a month at 10 people. Over 50 it is ADP Workforce Now (est. $23-$30 per employee) against Paychex Flex or Paycor, which Paychex now owns. Pick on support model and contract terms.
Paychex vs ADP Workforce Now: which is better for Enterprise Employee Scheduling teams?
Under 50 employees, ADP RUN has the edge for owners who want 24/7 phone help and no contract; Paychex Flex has the edge for owners who want an assigned [payroll](/categories/payroll-software) specialist. Expect $80 to $145 a month at 10 people from either, by quote.
From 50 to about 1,000 employees, [ADP Workforce Now](/software/adp-workforce-now) (est. $23 to $30 per employee, about $2,300 to $3,000 a month at 100) is the deeper HR suite. Paychex's answer at that size is increasingly Paycor, which it bought in April 2025, so get a Paycor quote alongside Flex.
Don't sign with either without the renewal increase, W-2 fees and any early termination fee written into the order form. Those three items drive most complaints about both companies.
Paychex vs ADP Workforce Now: what each tool does
Paychex is a long-established US payroll and HR provider whose Flex platform includes 401(k) administration and a PEO option.
- Starting price
- ~$39/mo + $5 per employee (legacy) (est.)
- Deployment
- Cloud
- Free trial
- No free trial; bank-partner promotions have offered months of free payroll
[ADP](/software/adp) Workforce Now is the mid-market HR and payroll platform from ADP, the company that has been processing paychecks since 1949 and now serves over 920,000 clients worldwide.
- Starting price
- ~$23-$30 per employee/mo (est.) (est.)
- Deployment
- Cloud
- Free trial
- No free trial found; demo and quote only
Paychex vs ADP Workforce Now: side by side
Rows are grouped by the decision they belong to, and a row is marked where the two products answer differently. Rows they answer the same way stay visible: that is an answer too.
| Pricing | Paychex | ADP Workforce Now |
|---|---|---|
| Starting price | ~$39/mo + $5 per employee (legacy)Estimated, quote-based | ~$23-$30 per employee/mo (est.)Estimated, quote-based |
| Typical cost | Quote-based; third-party est. $47-$95/mo + $3-$5/employeeEstimated, quote-based | $55K-$72K/yr at 200 employees on Plus (est.)Estimated, quote-based |
| Billing unit | per month + per employee | per employee per month |
| Free trial | No free trial; bank-partner promotions have offered months of free payroll | No free trial found; demo and quote only |
| Price transparency | Quote only (range from third-party sources) | Quote only (range from third-party sources) |
Prices verified Sep 2026. Sources: Paychex Flex: Paychex compare payroll packages (no prices shown), Paychex Flex: Tech.co Paychex pricing (July 2026), Paychex Flex: Workstream, Paychex pricing (June 2026), Paychex Flex: RemotePeople Paychex pricing (May 2026), Paychex Flex: Capterra Paychex Flex pricing, Paychex Flex: VeraBank 6-months-free Paychex promotion, ADP Workforce Now packages page (no prices), ADP Workforce Now: Outsail ADP Workforce Now review 2026 (July 2026), ADP Workforce Now: CostBench ADP Workforce Now (verified June 2026), ADP Workforce Now: Vendr ADP pricing (updated Feb 2026).
Full plan tables: Paychex pricing, ADP Workforce Now pricing.
| Criteria |  Paychex |  ADP Workforce Now |
|---|---|---|
| Commercials | ||
| Starting priceDiffers | ~$39/mo + $5 per employee (legacy) (estimated, quote-based) | ~$23-$30 per employee/mo (est.) (estimated, quote-based) |
| Pricing modelDiffers | Tiered pricing | Custom quote |
| Free trialDiffers | No free trial; bank-partner promotions have offered months of free payroll | No free trial found; demo and quote only |
| Typical costDiffers | Quote-based; third-party est. $47-$95/mo + $3-$5/employee | $55K-$72K/yr at 200 employees on Plus (est.) |
| Who it fits | ||
| Best forDiffers | Employers wanting payroll, 401(k) and PEO from one vendor | Mid-market payroll teams running multi-entity or global payroll |
| Rollout & platform | ||
| Deployment | Cloud | Cloud |
| Supported platforms | Web, iOS, Android | Web, iOS, Android |
Paychex vs ADP Workforce Now: key differences
Two different Paychex vs ADP decisions
Both companies sell one product to small businesses and another to mid-sized ones. Compare the right pair or the quotes will not line up.
| Your size | ADP product | Paychex product | What decides it |
|---|---|---|---|
| 1-49 employees | RUN Powered by ADP (or the Roll app) | Paychex Flex | 24/7 phone support vs an assigned specialist |
| 50-999 employees | ADP Workforce Now | Paychex Flex upper tiers or Paycor | HR depth, implementation time, renewal terms |
| Staff in several countries | ADP Global Payroll (140+ countries) | US and parts of Europe only | ADP, unless you add an EOR |
Paychex and ADP cost at 10, 25 and 100 employees
| Product | 10 employees / mo | 25 employees / mo | 100 employees / mo |
|---|---|---|---|
| Paychex Flex, last published entry plan ($39 + $5) | $89 | Not offered above 19 | Not offered |
| Paychex Flex Pro (est. $47-$95 + $3-$5) | $77-$145 | $122-$220 | Quote |
| ADP RUN Essential (est. $79 + $4) | $119 | $179 | Not sold above 49 |
| ADP Workforce Now (est. $23-$30 per employee) | Not sold under 50 | Not sold under 50 | $2,300-$3,000 |
Paychex specialist or ADP's 24/7 line?
| Feature | Paychex | ADP Workforce Now |
|---|---|---|
| Support model | Phone, chat and online on all plans; dedicated payroll specialist on higher tiers | Client service specialists; enterprise clients get a Client Success Executive |
| Published hours | HR, benefits and time lines weekdays 8am-8pm ET | ADP says all payroll plans include 24/7 live payroll professionals |
| Accountant access | Partner Pro portal (formerly AccountantHQ) | Accountant Connect (built around RUN) |
| Accounting sync | QuickBooks Online, Sage Intacct and Xero via the general ledger service | ADP Marketplace and APIs; a native QuickBooks Online link is not confirmed for Workforce Now |
| Packages | Flex tiers; Paycor for larger companies | Select, Plus (adds benefits), Premium (adds time) |
| Global payroll | US and parts of Europe | 140+ countries through ADP Global Payroll |
| Scale (2026 filings) | About 840,000 customers | 1.1 million+ clients |
Where Paycor fits now that Paychex owns it
- Paychex completed its $4.1 billion purchase of Paycor on April 14, 2025.
- Paycor runs as a standalone business unit; existing customers stay on the Paycor platform.
- Paychex's 2026 annual report calls Paycor its main HCM platform for larger businesses, with Flex for small and medium-sized ones.
- For a 150-person company, the fair comparison is often ADP Workforce Now against Paycor. See Paycor vs Paylocity and UKG vs ADP Workforce Now.
Contract terms to get in writing from both
- Term length and auto-renewal. ADP RUN has no contract; Workforce Now and Paychex deals usually renew automatically.
- The cap on renewal increases. Third-party benchmarks report Workforce Now rises of 5% to 8% a year.
- Year-end fees. ADP lists W-2 and 1099 forms as an additional fee on RUN.
- Early termination fee and notice period. ADP RUN needs 30 days' written notice; ask Paychex for its figure.
- Who files the final quarter and W-2s after you leave, and at what price.
Switching between Paychex and ADP
- 1Pick the cutover: January 1 is cleanest, then a quarter start. Only one provider files each quarter.
- 2Pull year-to-date payroll by employee, tax payments made and quarterly returns from the old provider before access ends.
- 3Give written notice. ADP RUN requires 30 days; confirm Paychex's notice period in your agreement.
- 4Allow time. RUN can run its first payroll within days of setup; Workforce Now typically takes 10 to 14 weeks.
- 5Check the first two pay runs against the old provider's registers before closing the old account.
What Paychex and ADP customers complain about
Themes from Trustpilot, SoftwareFinder and Capterra, checked October 2026. Both Trustpilot pages mix payroll customers with employees.
- Paychex, a fee for everything: add-on charges that push the bill well past the quote (Trustpilot, 1.7/5 from 853 reviews).
- Paychex, cancellation drag: reviewers describe months of billing after closing an account (Trustpilot).
- Paychex, rep quality: long holds and transfers between assigned reps (Trustpilot).
- ADP, unordered fees and price rises after a promised freeze (Trustpilot, 1.2/5 from 3,125 reviews).
- ADP Workforce Now, confusing reports: users find it hard to pull data into a single report (SoftwareFinder; Capterra).
- ADP, hard to reach a person despite the 24/7 promise (Trustpilot).
Related: Gusto vs ADP, Gusto vs Paychex, Paycor vs Paychex, and payroll software vs payroll services.
Frequently asked questions
Is Paychex or ADP cheaper?
Neither publishes current prices, so it depends on your quote. Paychex's last listed plan was $39 a month plus $5 per employee, and third-party estimates put Flex Pro at $47 to $95 plus $3 to $5 per employee. ADP RUN is estimated at $79 plus $4 per employee. At 10 employees both land around $80 to $145 a month before add-ons.
Does Paychex own Paycor?
Yes. Paychex announced the deal on January 7, 2025 and completed it on April 14, 2025, for about $4.1 billion. Paycor still runs as a separate platform: Paychex's annual report describes Paycor as its main HCM platform for larger businesses and Paychex Flex as its platform for small and medium-sized businesses.
Which has better customer support, ADP or Paychex?
ADP offers longer hours: it says all payroll plans include 24/7 access to live payroll professionals. Paychex lists weekday 8am to 8pm Eastern hours for several support lines and assigns a dedicated payroll specialist on higher tiers. Both score poorly on Trustpilot, mostly over billing and cancellation, so judge the support you are quoted.
Do ADP and Paychex require contracts?
ADP RUN does not: ADP says you can end service at any time with 30 days' written notice. Workforce Now deals are usually term contracts that auto-renew. Paychex does not publish Flex payroll terms, and older reviews describe 12-month minimums; its PEO agreement includes an early termination fee. Ask both for the term and exit fee in writing.
How long does it take to switch from Paychex to ADP?
ADP RUN can start as soon as you have your EIN, tax documents and bank details, and ADP says you need not wait for a quarter end. ADP Workforce Now implementations typically take 10 to 14 weeks, per OutSail. In both cases only one provider files each quarter, so a quarter-start switch is cleanest.
Which is bigger, ADP or Paychex?
ADP. In July 2026 ADP reported more than 1.1 million clients in 140+ countries and $21.9 billion in annual revenue. Paychex reported about 840,000 customers, mostly in the US with some in Europe, and says it pays one in eleven US private-sector workers. Size matters most if you need payroll outside the US, where ADP covers 140+ countries.