What Is Certified Payroll? A Guide for Federal Contractors

Every federally funded construction project over $2,000 comes with a weekly reporting obligation that carries real consequences for mistakes. One miscalculated fringe benefit or a late filing can trigger back-wage claims and contract termination, and in the worst cases, a three-year ban from federal work.

This guide covers what certified payroll requires, how to fill out Form WH-347 correctly, what mistakes to watch for, and how to build a compliance system that keeps your projects on track.

What does certified payroll mean for your projects?

Certified payroll is a weekly report that every contractor and subcontractor must submit on federally funded or federally assisted construction projects. The report confirms, under penalty of perjury, that all workers received the correct prevailing wages and fringe benefits required by the Davis-Bacon Act. Prime contractors carry responsibility for their own filings and for making sure every subcontractor downstream files accurately and on time.

The requirement applies to any project exceeding $2,000 in federal construction funding, a threshold low enough to capture nearly all government construction work. Treating certified payroll as a routine administrative task from day one avoids the expensive disputes that come from last-minute scrambling.

How prevailing wages work in certified payroll

Prevailing wages have two components that contractors need to track separately: the base hourly rate (paid in cash) and the fringe benefit obligation. You can satisfy the fringe obligation through qualified benefit plans (health insurance, pension contributions, paid vacation, apprenticeship training) or by paying the fringe amount as additional cash wages. A laborer classification with a $34.52 base rate and a $7.00 fringe requirement, for example, carries a total prevailing wage obligation of $41.52 per hour.

The Department of Labor publishes wage determinations for each geographic area and trade classification. These rates change periodically, so verify the applicable determination at project start and monitor for updates throughout construction. Paying the correct base rate but shorting the fringe component is one of the most common violations and triggers the same penalties as underpaying the base wage.

How to complete Form WH-347

Form WH-347 is the standard certified payroll form published by the Department of Labor, and most contractors use it because auditors and contracting officers expect it. Each row requires several data points per worker per weekly pay period:

• Worker identification: Full name, last four digits of Social Security number, and work classification matching the wage determination for that project.
• Hours worked: Daily breakdown of straight time and overtime hours, tracked separately for each day of the pay period.
• Wage calculations: Gross wages computed at the applicable prevailing rate, with overtime calculated at 1.5 times the basic hourly rate.
• Deductions and net pay: Itemized deductions including taxes, benefit contributions, and any other withholdings, followed by the net amount paid.

The statement of compliance at the bottom of the form is where the contractor or authorized officer certifies, under penalty of perjury, that the information is correct and complete. This certification carries real legal weight, so review the numbers carefully before signing.

Certified payroll deductions contractors can and cannot take

Not every payroll deduction is permitted on certified payroll projects. The Davis-Bacon Act prohibits any deduction that reduces a worker's effective pay below the prevailing wage minimum, and several common deduction types are explicitly banned regardless of how they affect the total. Contractors cannot charge workers for tools or equipment needed to do the job, deduct for required safety gear or uniforms, withhold pay for equipment damage or material waste, or participate in any kickback arrangement where workers return a portion of their wages.

Permitted deductions include standard tax withholdings, court-ordered garnishments, union dues, and voluntary benefit contributions that the worker has authorized in writing. Keeping a clear record of authorization forms for every voluntary deduction protects you during audits, since investigators will ask for documentation on anything beyond statutory withholdings.

Consequences of certified payroll violations

The penalties for non-compliance escalate quickly and affect more than the project where the violation occurred. Contracting agencies and the Department of Labor can take enforcement actions ranging from financial penalties to career-ending sanctions:

• Back-wage payments: Every affected worker receives the full amount owed plus interest, calculated from the date of underpayment.
• Contract payment withholding: The contracting agency can freeze payments on the current project to cover the estimated underpayment amount.
• Contract termination: The agency can terminate the contract for cause, and the contractor becomes liable for completion costs.
• Debarment: Contractors can be barred from all federal contracting for up to three years, which eliminates an entire revenue stream.

Willful falsification of certified payroll reports also opens the door to criminal prosecution, since the certification is a sworn statement.

How to build a certified payroll compliance system

A reliable compliance process starts with daily timekeeping rather than end-of-week estimates. Workers should record their hours by classification each day, since many laborers perform work across multiple trade categories on the same project. Reconstructing the week from memory on Friday introduces the kind of errors that auditors flag.

Four practices keep certified payroll filings clean and audit-ready:

• Daily time records by classification: Workers log hours under each trade classification separately, with supervisor verification at the end of each shift.
• Pre-submission review: A second set of eyes checks every WH-347 before the authorized officer signs the certification, comparing hours against daily logs and wage rates against the applicable determination.
• Subcontractor monitoring: Collect and review subcontractor certified payroll reports before submitting your own, since the prime contractor bears ultimate responsibility for the entire project.
• Organized project files: Maintain copies of wage determinations, signed certifications, daily time records, and fringe benefit documentation in a single project file for a minimum of three years.

Whether you manage certified payroll internally or hire outside help depends on your volume. A single project with fewer than ten workers is manageable with a careful internal process and a good spreadsheet. Once you're running three or more concurrent projects or managing more than ten workers across sites, professional payroll services (typically $500 to $1,500 per month or $50 to $150 per report) reduce the risk of errors that could cost multiples of that in penalties.

Certified payroll and your broader financial operations

The same habits that keep your weekly filings accurate, clean record-keeping and proper worker classification, overlap with the financial disciplines that keep a construction business healthy.

Worker classification is a good example. The distinction between employees and independent contractors determines which workers appear on your WH-347 and what wage obligations apply. Getting it wrong creates problems beyond the Davis-Bacon Act, including IRS penalties for misclassification and state-level employment tax liability. Make sure your business entity filings are current before taking on federal contracts, since a lapsed LLC or expired registration adds complications to an already paperwork-heavy process.

Common certified payroll mistakes to avoid

Even contractors who understand the rules make preventable errors that trigger audits or payment delays. Most of these mistakes come from rushed processes rather than ignorance, and clean general accounting practices reduce the chance of errors flowing into your certified payroll reports.

The most frequent certified payroll mistakes fall into four categories:

• Classification mismatches: Assigning workers to the wrong trade classification or applying a wage determination from a different geographic area results in underpayment even when the dollar amount looks correct.
• Fringe calculation errors: Applying the overtime multiplier to fringe benefits instead of using the straight-time rate leads to incorrect totals, since fringe obligations remain at the base rate regardless of hours worked.
• Incomplete reporting: Leaving fringe benefit payments off the WH-347 when they're paid through a qualified plan, or skipping weekly filings during periods when no work was performed, are both violations. A "no work" report is still required.
• Late submissions: Filing reports after the weekly deadline gives contracting officers grounds to withhold payment on the current project while they investigate.

Any of these triggers scrutiny from contracting officers and can delay payments across the entire project.

How certified payroll connects to reimbursements and fund disbursements

Construction projects involve constant movement of money between prime contractors, subcontractors, suppliers, and workers, and contract payments are often tied directly to accurate weekly filings. When a contracting officer withholds payment due to a certified payroll discrepancy, the cash flow pressure ripples through every subcontractor on the project.

Contractors who also handle per diem payments, travel reimbursements, or equipment allowances need to understand how those payments interact with prevailing wage requirements. Some reimbursements count toward the fringe benefit obligation and some don't, depending on whether they're classified as wages or expense reimbursements under DOL guidelines. The line between reimbursable expenses and wage payments is where contractors frequently make mistakes on their WH-347 filings, so documenting the classification of every payment type at project start prevents confusion during audits.

Frequently asked questions about certified payroll

Do subcontractors have to file their own certified payroll reports?

Every subcontractor on a federally funded construction project must submit their own weekly certified payroll report, regardless of tier. The prime contractor collects these reports and is responsible for ensuring they're complete and accurate before submitting them to the contracting agency. If a subcontractor fails to file or submits inaccurate data, the prime contractor faces the enforcement consequences.

What happens if you file certified payroll late?

Late filings can result in contract payment withholding until the reports are current, and repeated lateness may be treated as a failure to comply with contract terms. The contracting officer has discretion to escalate late filings to the Department of Labor for investigation, which can lead to back-wage assessments and potential debarment proceedings. Filing a "no work performed" report for weeks when your crew wasn't on site prevents gaps in the record.

Can you use software instead of Form WH-347 for certified payroll?

Contracting agencies accept electronic submissions and alternative formats as long as they capture all the data elements required by the WH-347 and include a signed statement of compliance. Several payroll software platforms generate certified payroll reports that meet DOL requirements, and some integrate directly with agency submission portals. The key requirement is that the output must be equivalent in content to the WH-347, regardless of the format used.

How long do you need to keep certified payroll records?

Federal regulations require contractors to retain certified payroll records for a minimum of three years after project completion. Many contractors keep records longer because state requirements vary and because disputes or audits can surface years after a project closes. Store records in an organized system that allows quick retrieval by project, worker, and pay period, since investigators expect you to produce specific documents within a reasonable timeframe.