Certified Payroll and Job Costing: Gusto or Rippling for a GC

Not every project needs a certified payroll report, but any job with federal, state, or local prevailing wage requirements does, and the trigger is usually the funding source, not the job's size. A privately funded office buildout has none of these requirements; a public school renovation almost always does.

Track which active jobs are prevailing wage jobs in one place, ideally the same system that runs payroll, so a crew member's hours get coded correctly from the first day on site instead of getting reclassified after the fact.

Workers' comp class codes are assigned by the type of work performed, not the employee's job title. A foreman who frames on Monday, supervises on Wednesday, and does electrical rough-in on Friday should have hours split across the corresponding class codes for that week, since each carries a different comp rate.

Coding everything to one blended rate is common and it's wrong. It either overstates your comp premium on lower-risk hours or understates it on higher-risk ones, and either version creates problems at your annual audit when the carrier reconciles reported payroll against actual job records.

Gusto can be a reasonable fit for a straightforward crew with a handful of states, standard pay rates, and no certified payroll requirement. Its interface is simple enough that a bookkeeper without construction-specific training can run it without much hand-holding.

Rippling's more configurable pay types and per-project rules give a contractor more room to model fringe rates and job-based pay that only apply on certain contracts, which matters once you're running union-adjacent fringe schedules on one job and open-shop pay on another. Check how any payroll platform, Gusto included, supports multiple fringe benefit schedules and certified payroll reports, since you may need a separate certified payroll tool or a WH-347 export from your payroll data.

None of the previous points matter much if payroll data doesn't sync to job costing until weeks after the crew has moved to the next site. Ask specifically how a pay run maps to your job numbers in the general ledger, and whether that mapping happens automatically or requires someone to code hours after the fact.

A project that's already closed out with the wrong labor cost attached doesn't help you bid the next one accurately, and by the time the discrepancy shows up in your job-cost report, the crew that caused it has forgotten which day they worked where.

Most jurisdictions want a WH-347-style certified payroll report weekly, with a signed statement of compliance attached. Confirm how your payroll platform exports hours and pay rates by job and worker, since that export is what feeds whichever tool or portal produces the actual report, and a clean export saves your project accountant from rebuilding it by hand every Friday.

Also confirm the fringe benefit credit calculation matches what your prevailing wage determination allows. Miscalculating the fringe credit is one of the more common findings in a certified payroll audit, and it's much easier to set up correctly once than to correct across months of past reports.

Before each weekly filing, confirm these points:

• Which active jobs carry federal, state, or local prevailing wage requirements, since the funding source usually decides it.
• Hours are split across the correct workers' comp class codes by the type of work performed, not by job title.
• The payroll export shows hours and pay rates by job and worker, since that export feeds the report and signed compliance statement.
• Pay runs map to job numbers in the general ledger automatically, so labor cost lands on the job before it closes.

Your general contractor or owner may hold back a percentage of each draw as retainage until the job closes out, but your crew still expects to get paid every pay period regardless of when that retainage releases. Confirm your payroll process is funded from operating cash, not tied to draw timing, so a slow-paying owner on one job never delays wages on another.

This is a cash flow planning problem more than a payroll platform problem, but it's worth building a simple rolling forecast that separates job draws from payroll obligations, so a controller can see the gap coming a month out instead of discovering it the week payroll is due.