Accounting & Finance · head to head
Brex vs Paychex Flex

Brex
Accounting & Finance
The financial stack for growing businesses
- From
- $29/month
- Rated
- -

Paychex Flex
Payroll & Benefits
Payroll and HR solutions that grow with you
- From
- $39/month
- Rated
- -
The short version
- Each has a real cost: Brex the free Essentials tier is limited to two legal entities; Paychex Flex paychex publishes no rate card for Paychex Flex: the payroll page names the Select, Pro and Enterprise packages but gives no per employee fee, no base monthly fee and no setup fee
- They diverge on capability: Brex covers Corporate cards, Paychex Flex covers Payroll Processing.
Where they differ
Only the attributes on which Brex and Paychex Flex actually diverge.
| Attribute | Brex | Paychex Flex |
|---|---|---|
| Starting price | $29/month | $39/month |
| Pricing model | freemium | quote |
| Category | Accounting & Finance | Payroll & Benefits |
| Founded | 2017 | 1971 |
Identical on both: free tier (No), platforms (Web, Ios, Android), user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Brex
- Corporate cards
- Business accounts
- Expense management
- Bill pay
- Travel
- NetSuite
- SOC 2
- PCI DSS
Only in Paychex Flex
- Payroll Processing
- Tax Administration
- HR Services
- Benefits Administration
- Time and Attendance
- Retirement Services
- Sage
- Microsoft 365
Both cover
- QuickBooks
- Xero
- Web support
- Ios support
- Android support
What people use each for
The jobs each tool is most often brought in to do.
Brex
- Corporate cards with spend controls for startupsnot Paychex Flex
- Expense management and reimbursementsnot Paychex Flex
- Travel booking inside the spend platformnot Paychex Flex
- Bill pay and accounting system syncnot Paychex Flex
- Multi-entity spend management on the paid tiersnot Paychex Flex
Paychex Flex
- Running payroll and filing payroll taxes for small and mid sized US businessesnot Brex
- Combining payroll with benefits administration and HR services from one vendornot Brex
- Handling multi state payroll compliance and year end tax formsnot Brex
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Brex
- The free Essentials tier is limited to two legal entities
- Premium is $12 per user per month, so cost scales with headcount using the card
- Enterprise and Smart Card pricing is not published
- Eligibility criteria are not stated anywhere on the pricing page, which matters for a product that extends credit
Paychex Flex
- Paychex publishes no rate card for Paychex Flex: the payroll page names the Select, Pro and Enterprise packages but gives no per employee fee, no base monthly fee and no setup fee
- Pricing is obtained only by requesting a quote or calling sales
- Product capability is split across three packages, so features are tied to a tier whose price is not disclosed
Pricing, plan by plan
Brex
$29/month- EssentialsFree
- Corporate cards
- Expense management
- Bill pay
- Premium$12/month
- Advanced controls
- Custom approvals
- Travel booking
Paychex Flex
$39/month- Essentials$39/month
- Payroll Processing
- Tax Services
- Direct Deposit
- Select$undefined/month
- All Essentials features
- HR Administration
- Onboarding
Which should you pick?
Choose Brex if
- You need corporate cards.
- You work on Web, Ios, Android.
- You also want business accounts.
Choose Paychex Flex if
- You need payroll processing.
- You work on Web, Ios, Android.
- You also want tax administration.
Questions people ask
- Is Brex or Paychex Flex better?
- Neither clearly leads. Brex starts at $29/month and Paychex Flex at $39/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Brex or Paychex Flex?
- Brex starts at $29/month and Paychex Flex at $39/month.
- Does Brex or Paychex Flex run on more platforms?
- Both run on Web, Ios, Android, so platform support will not decide this one for you.
- What is Brex best used for?
- Brex is most often used for corporate cards with spend controls for startups, expense management and reimbursements, travel booking inside the spend platform, bill pay and accounting system sync. Of those, corporate cards with spend controls for startups and expense management and reimbursements are not what Paychex Flex is typically brought in for.
- What can Brex do that Paychex Flex cannot?
- Brex covers Corporate cards, Business accounts, Expense management, Bill pay. Paychex Flex covers Payroll Processing, Tax Administration, HR Services, Benefits Administration. Both handle QuickBooks, Xero, Web support, Ios support.
Related pages
More on Paychex Flex
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