Certified payroll and prevailing wage compliance are among the most confusing parts of construction payroll — yet the answers to common questions can make or break your project’s cash flow, audit readiness, and compliance status.
Whether you’re preparing certified payroll reports, handling wage determinations, or responding to audit requests, this FAQ gives clear, practical answers to the questions payroll teams are actually asking.
What Are the Basics of Certified Payroll?
Certified payroll is a weekly report that contractors and subcontractors submit on public works projects to verify they paid workers according to prevailing wage and fringe benefit requirements. It documents:
- Worker classifications
- Hours worked
- Wage rates and fringes
- Compliance certification
This information tells awarding agencies that payroll adheres to required wage determinations.
Why is certified payroll required?
Certified payroll ensures public funds are used to pay workers at legally mandated prevailing wage rates rather than lower wages. It protects workers and enforces wage standards on public works.
What projects require certified payroll?
Generally, certified payroll is required on:
- Federal public works projects (Davis-Bacon Act)
- State prevailing wage projects
- Federally assisted projects with wage clauses
- Some municipal and transportation projects
Check the contract for language requiring certified payroll.
What Are Wage Determinations and Certified Payroll Pay Rules?
What is a wage determination?
A wage determination is a document that lists the required prevailing wage and fringe benefit rates for specific trades and locations on public works projects. These rates often change, so payroll teams must use the correct, effective determination for each project.
How do you find the correct wage determination?
- Federal jobs: search Wage Determinations on SAM.gov
- State jobs: visit the state labor department’s prevailing wage site
Always use the determination tied to your contract.
Do certified payroll rates include fringe benefits?
Yes. Wage determinations include required base wage + fringe benefits. Fringes may be:
- Paid into approved plans
- Paid in cash
- Split between both
Payroll must document how fringes are paid.
How Should Timesheets and Hours Be Reported on Certified Payroll?
How should hours be reported?
Hours should be reported daily for each worker, separating:
- Straight time
- Overtime
- Travel or supplemental pay (if required)
Most agencies look at daily hours, not weekly averages.
Can a worker have more than one classification in a week?
Yes. If a worker performs duties under multiple classifications, record and pay hours under the appropriate rate for each task.
How Does Worker Classification Work in Certified Payroll?
What determines the correct classification?
Classifications are determined by the work actually performed, not job titles. If a worker performs multiple tasks, hours must be split accordingly.
What if classification is unclear?
When in doubt:
- Review the wage determination’s classification descriptions
- Ask supervisors for task details
- Document decisions and retain supporting records
How Do You Submit Certified Payroll Reports?
How often must certified payroll be submitted?
Certified payroll is typically submitted weekly within the time frames specified by the contract or awarding agency.
What form do I use?
Most federal projects use WH-347 or agency-specific alternatives designated in the contract. Always confirm the required form before submission (see instructional webinar below).
What must be included in the certification?
The certification must include an authorized representative’s signature attesting that:
- Payroll data is true and complete
- Workers were paid at least the required prevailing wages
Unsigned reports are often rejected.
eBacon Smart Webinar Series:
Understanding the 2025 Revised WH 347 Form
a Payroll Manager’s Guide
Watch this video and learn all about the new WH-347 certified payroll form and how to complete it [officially in effect since January 6, 2025].
What Happens During Certified Payroll Audits and Corrections?
What happens if certified payroll is wrong?
Common errors can trigger:
- Payment delays
- Audit follow-ups
- Corrective wage payments
- Penalties or compliance reviews
Fix mistakes before submission to avoid headaches.
How long should certified payroll records be kept?
Most agencies require retention of certified payroll records for a minimum of three years after project completion. Some states or agencies require longer.
How Does Prevailing Wage Impact Tax Credits?
Does prevailing wage affect tax credits?
Yes. Requirements like IRA prevailing wage standards (for certain energy projects) can affect eligibility for enhanced tax credits if wages and records are not compliant.
What Are Common Certified Payroll Mistakes Payroll Teams Make?
Payroll teams should avoid:
- Using outdated wage determinations
- Misclassifying workers
- Reporting weekly averages instead of daily hours
- Leaving certifications unsigned
- Failing to retain supporting records
What Should Payroll Teams Know About Certified Payroll and Prevailing Wage?
Certified payroll compliance isn’t just about filling out a form — it’s about understanding prevailing wage rules, classifications, hours, fringes, and documentation. Getting these right:
- Reduces audit risk
- Keeps projects funded
- Protects your team and contractor reputations
📌 Want to make certified payroll easier?
See how eBacon aligns wages, classifications, timesheets, and compliance rules in one workflow. Book a quick demo.
Additional Certified Payroll FAQs (Quick Answers)
Here are the most–asked variations you’ll see in AI tools and search:
Q: Do I have to pay travel time on certified payroll?
A: Only if required by the wage determination or contract.
Q: What is the difference between WH-347 and WH-38?
A: WH-347 is the standard federal certified payroll form; WH-38 may be required by specific agencies or states.
Q: Can fringe benefits be paid in cash?
A: Yes, provided the total meets the required fringe amount.
Q: Are apprentices allowed on certified payroll?
A: Yes, if registered in approved programs and paid at the apprentice rate under the wage determination ratio rules.
The material presented here is educational in nature and is not intended to be, nor should be relied upon, as legal or financial advice. Please consult with an attorney or financial professional for advice.