Rippling vs Gusto for Commercial Solar EPC Crews

Projects that meet the IRA's prevailing wage and apprenticeship requirements can qualify for a substantially larger investment tax credit than projects that don't. Meeting those requirements means paying at least the Davis-Bacon prevailing wage determination for the project's location and trade classification, and hitting minimum apprentice labor-hour ratios, with documentation to prove both.

This isn't optional paperwork if you're pursuing the bonus credit; it's the difference between the base credit and a meaningfully larger one, so the payroll records supporting it need to hold up to scrutiny, not just look reasonable.

If your project is pursuing the bonus credit, you're generally producing certified payroll records for every worker on that project, W-2 employee or subcontractor, showing hours, classification, and wage rate against the applicable determination. Neither Rippling nor Gusto is typically used to generate a certified payroll report on its own; both can hold the underlying wage and hours data if it's entered correctly by classification and project.

The setup work is making sure each project is tracked as its own cost center in payroll from day one, so pulling certified payroll data later doesn't mean reconstructing hours from timesheets after the fact.

Certified payroll records for a bonus credit project should cover:

• Every worker on the project, whether a W-2 employee or a subcontractor, so the documentation reflects everyone paid to perform the work.
• Hours worked and job classification for each person, matched to the applicable prevailing wage determination for the project's location and trade.
• The wage rate actually paid, compared against that determination, with records that hold up to scrutiny instead of merely looking reasonable.
• Apprentice versus journeyworker hours tracked on an ongoing basis, not only at kickoff, so the ratio holds across the project's full duration.

Larger commercial solar projects often mix your own W-2 installation crew with subcontracted electricians, sometimes union IBEW labor for the interconnection work specifically. The union electricians are typically paid through their own employer, not yours, but your prevailing wage documentation still needs to reflect what they were actually paid on your project if you're the general contractor of record.

This is more a project management and documentation discipline than a payroll platform feature; get subcontractor certified payroll records as a standard part of your project close-out process, regardless of which platform runs your own crew's pay.

Installation crews that travel between project sites in different states typically get a per diem for meals and lodging on top of wages, which is non-taxable when it meets IRS accountable plan rules and taxable when it doesn't. Suppose a crew travels from a home base in one state to a project in another for a two-week installation; that per diem needs to be tracked as a reimbursement tied to specific travel dates, not folded into regular pay.

Both platforms support non-taxable reimbursement categories. Rippling's multi-state tracking makes it somewhat easier to flag when a traveling crew's work in a new state triggers its own withholding registration, which happens more often in this industry than in most, given how frequently crews move.

A firm doing smaller residential or light commercial work with no prevailing wage exposure doesn't need much beyond standard payroll, and Gusto handles that well. A firm regularly chasing the IRA bonus credit, tracking multiple concurrent projects by cost center, and managing a traveling crew across states is a better match for Rippling's project- and location-based structure.

A firm without the internal staff to manage certified payroll documentation correctly, where getting it wrong risks the bonus credit itself, may find that a PEO or a specialized certified payroll service is worth adding regardless of which platform runs day-to-day pay.

The IRA's apprenticeship requirement isn't satisfied by hitting the right labor-hour ratio once at the start of a project; it has to hold across the project's full duration, which means tracking apprentice versus journeyworker hours on an ongoing basis, not just at kickoff.

A crew that starts compliant and then loses an apprentice partway through, without backfilling, can fall out of compliance without anyone noticing until the credit documentation is assembled at the end. Building a running apprentice-hour tally into your project tracking, checked at least monthly, catches this while there's still time to adjust staffing rather than after the project closes out.