Six line items sit outside the headline per employee rate often enough to wreck a budget built on that rate alone, and each gets harder to move after signature.
Implementation and data migration
Implementation is quoted separately and is frequently negotiable on multi-year deals.[12] Budget 10 to 20 percent of annual software spend in the mid-market and one to two times annual subscription for an enterprise rollout.[11][13] Ask what the fee covers, because historical payroll migration and custom integrations are commonly scoped as extras.
Modules that are not in the headline rate
The advertised rate usually buys core HR and nothing else. BambooHR sells payroll, benefits administration, time and attendance, and global employment as add-ons with no published unit price, discounting 15 percent when payroll and benefits administration are bought together.[1] Rippling modules typically add $4 to $12 per employee per month each, and Paylocity's managed services layer adds $5 to $15 or more.[14][11]
Seat minimums and billing floors
Minimums appear at the platform tier and again on individual benefit accounts. BambooHR moves companies of 25 or fewer onto flat pricing from $250 a month, which is a floor rather than a discount.[1] TriNet requires a minimum worksite employee count for its PEO.[4] Gusto's FSA, dependent care FSA, and commuter accounts each carry a $20 monthly minimum however few people enroll.[2]
Per transaction and per event fees
Some charges never appear in a PEPM comparison because they are event driven. Gusto publishes $90 per payroll for same day pay, $100 per payroll for instant pay, and 15 percent of any R&D tax credits it identifies.[2] Deel prices contractor of record at $325 per contractor per month against $49 for self managed contractor payments.[8]
Annual uplift and renewal
A 3 to 5 percent annual increase is standard here, and quotes that omit a cap leave room for a much larger jump at renewal.[11] Negotiate the cap into the original contract, since renewal is the point at which your switching cost is highest.
Benefits and payroll taxes
A PEO or HCM administration fee covers administration, not the underlying spend. TriNet states that medical, dental, and vision costs sit outside the PEPM fee, and that employer FICA, FUTA, and SUTA remain separate business costs.[4] Most PEOs also charge a one time onboarding fee and require an annual agreement that may carry an early termination penalty.[4]