What is the Difference Between Construction Payroll & Certified Payroll?

Regular payroll is the process of paying your employees. Certified payroll is specialized reporting required for compliance with the Davis-Bacon Act.

The key nuance: certified payroll is a compliance reporting layer added on top of your regular payroll process whenever you take on federally funded construction work.

With certified payroll, you’re proving to government officials that you adjusted compensation to reflect the prevailing wage. Meanwhile, you create the appropriate paper trail to document compliance with the Davis-Bacon Act.

Below, we’ll walk through what each involves and how they work together on jobsites where you’re managing both private and federal projects.

What is Certified Payroll?

Certified payroll is a weekly reporting requirement for contractors working on federally funded construction projects over $2,000.

The Davis-Bacon Act requires contractors to pay prevailing wages — minimum rates set by the U.S. Department of Labor based on geographic location and job type. You submit Form WH-347 weekly, documenting every laborer and mechanic on the project.

The form includes:

• Hours worked
• Job classifications
• Gross pay
• Fringe benefits
• Deductions

You sign a statement of compliance under penalty of perjury, certifying that everything is accurate.

Prevailing wages aren’t negotiable. The DOL publishes wage determinations for construction work by area.

For example, if a carpenter position has a prevailing wage of $32 per hour in your project area but your typical rate for that role is $25, you’ll need to pay the higher prevailing rate on the federal contract.

Certified payroll applies to any federal construction contract over $2,000 — including federal office buildings, military installations and highway projects. The requirement extends to all subcontractors on these projects.

State and local projects may have their own prevailing wage requirements as well. More than 30 states have enacted “Little Davis-Bacon” laws that apply to state-funded public construction projects.

These state laws operate independently of the federal Davis-Bacon Act, with their own wage rates, thresholds and reporting formats — and in some cases, stricter requirements.

If your project receives both federal and state funding, you may need to comply with both sets of rules and pay whichever wage rate is higher.

The consequences of certified payroll violations include:

• Withheld contract payments
• Back wage liability
• Potential three-year debarment from federal contracts

Records must be maintained for three years after project completion and be accessible for Department of Labor audits.

What is Construction Payroll?

Construction payroll is your everyday, on-site payroll — the standard process for compensating employees on private construction projects.

You pay negotiated wages, withhold taxes, handle Social Security and Medicare and file quarterly reports. You set pay rates based on market conditions as long as you meet minimum wage laws. Processing happens on your schedule — weekly, biweekly or semi-monthly.

Regular payroll still requires careful management, especially for larger companies juggling multiple jobsites, a variety of trades and employees that switch tasks throughout the week.

On private projects, you’re not filing weekly federal compliance reports or signing a statement of compliance under penalty of perjury. But wage accuracy matters regardless of project type — misclassifying workers or underpaying carries legal exposure on both private and federal work.

Where Certified Payroll Reporting Fits (and Doesn’t Fit) Into Your Construction Payroll

Certified payroll reporting is a compliance layer built on top of standard construction payroll when contractors perform federally funded work.

When your crew is on a federal project, you’re running the same core payroll operations, plus the prevailing wage tracking and weekly WH-347 reporting that federal work requires.

Here’s what that looks like operationally across different project types.

Federal/Government Projects

Federal work changes your payroll workflow from the moment the contract is signed.

Before your crew sets foot on a government jobsite, you need to pull the applicable wage determination from the DOL and set up each job classification with the correct prevailing wage rate in your payroll system.

From that point forward:

• Every hour worked on the federal project must be tracked by job classification
• Wages must meet or exceed the prevailing rate
• A completed WH-347 — signed under penalty of perjury — must be submitted weekly to the contracting agency

Any workers who split time between the federal project and private work in the same week need their hours tracked separately so the right rate applies to each set of hours.

For example, a pipefitter classified as a plumber’s apprentice on a federal courthouse project may have a prevailing wage determination of $42/hour in your county.

Your payroll system needs to flag that classification and rate automatically when that worker clocks in on the federal project — and revert to their negotiated rate when they’re back on private work.

Each week, you document those hours, wages and job classifications on Form WH-347 and submit it to the contracting agency.

Private/Commercial Projects

On private projects, your payroll setup is simpler by design.

You negotiate wages with your workers, set your own pay schedule — weekly, biweekly or semi-monthly — and process payroll accordingly. There’s no wage determination to pull, no prevailing rate to verify against and no WH-347 to file.

Your compliance obligations on private work are still real — FLSA requirements, proper worker classification, accurate tax withholding and quarterly filings all apply.

But without a federal contract in play, you’re not subject to prevailing wage mandates or the weekly reporting burden of certified payroll.

Managing Both Simultaneously

The real complexity hits when workers split time between project types in the same week.

You track hours by project, apply the correct wage rate to each set of hours and generate both your standard payroll and the weekly certified payroll report for federal work.

For example, an electrician might log 24 hours on a federal airport expansion at the prevailing wage of $38/hour, then 16 hours on a private office building at their regular rate of $30/hour.

Your payroll system needs to capture this split, calculate pay correctly for each project type and produce the documentation each requires.

Running construction payroll reports and certified payroll reporting in parallel is standard practice for contractors working on both private and government projects.

The challenge isn’t choosing between regular and certified payroll — it’s running both payroll operations efficiently while keeping workers paid correctly and staying compliant with both sets of requirements.

Streamlining Your Payroll Efforts

Handling standard construction payroll alongside certified payroll reporting doesn’t require separate systems — modern payroll platforms integrate everything.

You’re processing standard employee compensation while also tracking prevailing wages, submitting weekly Form WH-347 reports and maintaining additional documentation for federal projects — all within one integrated system.

Payroll4Construction is a construction payroll service that handles both standard and certified payroll requirements.

Our platform handles tax withholdings, quarterly reporting and wage payments for your everyday operations.

Payroll4Construction also tracks prevailing wages by project, generates compliant Form WH-347 reports, manages fringe benefit calculations and maintains the documentation trail federal auditors expect.

Regardless of what your payroll circumstances look like — whether you’re managing private projects, federal contracts, or both — talk with a Payroll4Construction expert who understands the unique challenges construction companies face with payroll management.