Softwr

Payroll & Benefits · head to head

Paychex Flex vs Slack

Paychex Flex logo

Paychex Flex

Payroll & Benefits

Payroll and HR solutions that grow with you

From
$39/month
Rated
-
Full reviewWebsite
Slack logo

Slack

All industries

Where work happens

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Slack has a free tier, so it costs nothing to try first.
  • Each has a real cost: 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; Slack 90-day message history limit on free plan results in important conversations disappearing
  • They diverge on capability: Paychex Flex covers Payroll Processing, Slack covers Channels.

Where they differ

Only the attributes on which Paychex Flex and Slack actually diverge.

Attributes where Paychex Flex and Slack differ
AttributePaychex FlexSlack
Starting price$39/monthFree
Pricing modelquoteUnknown
Free tierNoYes
PlatformsWeb, Ios, AndroidWeb, iOS, Android, macOS, Windows, Linux
CategoryPayroll & BenefitsAll industries
Founded19712009

Identical on both: 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 Paychex Flex

  • Payroll Processing
  • Tax Administration
  • HR Services
  • Benefits Administration
  • Time and Attendance
  • Retirement Services
  • QuickBooks
  • Xero

Only in Slack

  • Channels
  • Direct messaging
  • Voice & video calls
  • Screen sharing
  • File sharing
  • Search
  • Workflow builder
  • Slack Connect

What people use each for

The jobs each tool is most often brought in to do.

Paychex Flex

  • Running payroll and filing payroll taxes for small and mid sized US businessesnot Slack
  • Combining payroll with benefits administration and HR services from one vendornot Slack
  • Handling multi state payroll compliance and year end tax formsnot Slack

Slack

  • Team communicationnot Paychex Flex
  • Project coordinationnot Paychex Flex
  • Customer supportnot Paychex Flex
  • Remote worknot Paychex Flex
  • Cross-functional collaborationnot Paychex Flex

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

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

Slack

  • 90-day message history limit on free plan results in important conversations disappearing
  • Per-user pricing becomes expensive quickly for larger teams
  • Notification overload with 78% of employees feeling overwhelmed by notifications
  • Mobile app performance issues including lag and slow syncing
  • Huddles limited to 50 people and cannot be recorded
  • Requires dedicated video conferencing service for formal meetings and webinars

Pricing, plan by plan

Paychex Flex

$39/month
  • Essentials$39/month
    • Payroll Processing
    • Tax Services
    • Direct Deposit
  • Select$undefined/month
    • All Essentials features
    • HR Administration
    • Onboarding

Slack

Free

No published plan breakdown. See the Slack review.

Which should you pick?

Choose Paychex Flex if

  • You need payroll processing.
  • You work on Web, Ios, Android.
  • You also want tax administration.
Paychex Flex review

Choose Slack if

  • You need channels.
  • You want to start without paying.
  • You work on Web, iOS, Android, macOS, Windows, Linux.
  • You also want direct messaging.
Slack review

Questions people ask

Is Paychex Flex or Slack better?
Neither clearly leads. Paychex Flex starts at $39/month and Slack at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Paychex Flex or Slack?
Slack has a free tier; the other does not. Paid plans start at $39/month for Paychex Flex and Free for Slack.
Does Paychex Flex or Slack run on more platforms?
Paychex Flex runs on Web, Ios, Android. Slack runs on Web, iOS, Android, macOS, Windows, Linux.
Can I use Slack for free?
Yes. Slack has a free tier, so you can try it without paying. Paychex Flex starts at $39/month.
What is Paychex Flex best used for?
Paychex Flex is most often used for running payroll and filing payroll taxes for small and mid sized us businesses, combining payroll with benefits administration and hr services from one vendor, handling multi state payroll compliance and year end tax forms. Of those, running payroll and filing payroll taxes for small and mid sized us businesses and combining payroll with benefits administration and hr services from one vendor are not what Slack is typically brought in for.
What can Paychex Flex do that Slack cannot?
Paychex Flex covers Payroll Processing, Tax Administration, HR Services, Benefits Administration. Slack covers Channels, Direct messaging, Voice & video calls, Screen sharing.

Answered from the vendors’ own pages

Slack: Does Slack have a free plan?

Yes, Slack offers a free plan indefinitely with no credit card required. Free users get 90-day message history, up to 10 app integrations, and 1:1 huddles.

Source
Slack: What are Slack's pricing plans?

Slack offers Free, Pro ($7.25/user/month with annual billing), Business+ ($12.50/user/month), and Enterprise Grid (custom pricing). Monthly billing costs approximately 20% more than annual.

Source
Slack: Does Slack support offline use?

Slack is a cloud-based platform and does not support robust offline work. Internet connectivity is required to access messages and collaborate.

Source
Slack: What integrations does Slack support?

Slack integrates with 43+ apps on average per team, including Google Drive, ChatGPT, Vercel, Asana, GitHub, and many others through their app marketplace.

Source
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Related pages

More on Paychex Flex

More on Slack

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