Certified Payroll Fringe Benefits, Explained
On a Davis-Bacon job, the prevailing wage is a base rate plus a fringe rate — and getting the fringe part wrong is the single most common way subcontractors end up owing back wages.
Last updated July 2026
Prevailing wage = base rate + fringe rate
Every classification on a Davis-Bacon wage determination lists two numbers, not one: a basic hourly rate (the cash you owe per hour) and a fringe rate (an extra hourly amount for benefits). The prevailing wage you must meet is the sum of the two. If the wage determination says a Carpenter gets $25.00 base and $12.00 fringe, the total package you owe is $37.00 per hour — not $25.00.
The fringe rate is real money you owe for every hour worked. You can deliver it in a few different ways, but you can never skip it. Treating the base rate as if it were the whole prevailing wage is the mistake that lands more small subcontractors in trouble than anything else on the form.
The three ways to satisfy the fringe
The Statement of Compliance on page 2 of the WH-347 gives you exactly three options for how you met the fringe obligation. You check 4(a), 4(b), or explain under 4(c):
| Method | What it means | On the form |
|---|---|---|
| 4(a) — Bona-fide plans | You pay the fringe as contributions to approved plans or funds (health insurance, a pension, an apprenticeship fund, a vacation plan). The money goes to a third party, not to the worker's paycheck. | Check box 4(a). Column 6 shows the base rate only; plan contributions are not cash wages, so they stay out of Column 7 gross. |
| 4(b) — Cash in lieu | You pay the fringe as extra cash right in the paycheck, on top of the base rate. Simple, but every fringe dollar becomes taxable wages. | Check box 4(b). Column 6 shows base / cash-fringe (e.g. 25.00/12.00). The cash fringe is included in Column 7 gross. |
| 4(c) — Combination | Part to plans, part in cash — for example $8.00 to a health plan and $4.00 as cash. Most common when a plan does not fully cover the required fringe. | Explain under 4(c): list the craft and how the split is made. Column 6 shows base plus the cash portion of the fringe. |
Why fringe is the #1 DOL audit finding
Wage and Hour Division investigators check the total package you provided against the total package the wage determination required, for every hour on the job. It is easy to pay the base rate perfectly and still come up short on fringe — a plan contribution that is lower than you thought, a benefit that does not qualify as bona-fide, or a fringe rate that was simply overlooked. Because the shortfall repeats for every hour of every worker, small per-hour gaps turn into large back-wage bills fast.
A worked shortfall example
Take that Carpenter again: wage determination of $25.00 base + $12.00 fringe = $37.00 required. Suppose you pay $25.00 cash and contribute $7.00 an hour to a benefit plan.
- Provided package: $25.00 cash + $7.00 to plans = $32.00/hr
- Required package: $37.00/hr
- Shortfall: $37.00 − $32.00 = $5.00 per hour
Your base cash looks fine — $25.00 matches the wage determination — so nothing on the face of the paycheck flags the problem. But you were $5.00 an hour short on the fringe. Over a standard 40-hour week that is $5.00 × 40 = $200.00 in back wages owed, for one worker, for one week. Multiply across a crew and a few months and you can see how a single overlooked fringe gap becomes a serious liability.
How fringe shows up on Column 6 and the Statement of Compliance
Column 6 is the "rate of pay" column. On a worker's straight-time row it shows the base rate, and — only when you pay fringe as cash — a second number for the cash fringe, written as base/fringe-cash. If you pay all of the fringe into bona-fide plans, Column 6 shows the base rate alone and you check box 4(a) on page 2. Contributions to plans are not cash wages, so they are excluded from the Column 7 gross (which reflects base cash, overtime premium, and any cash-in-lieu fringe).
Whichever method you used, you must reconcile it in the Statement of Compliance: 4(a) if you paid to approved plans, 4(b) if you paid in cash, or 4(c) with a written explanation for a combination. Signing that statement certifies the fringe was actually delivered — willful falsification carries civil and criminal exposure, so it is worth getting right.
The overtime nuance most people get wrong
Fringe is never multiplied by 1.5 on overtime hours. Overtime under Davis-Bacon and CWHSSA is calculated as 1.5 × the basic hourly rate, plus the fringe at straight time. The fringe is owed once per hour, at its plain rate, whether the hour is straight time or overtime.
Using the Carpenter's $25.00 base and $12.00 fringe, the correct overtime rate is:
(1.5 × $25.00) + $12.00 = $37.50 + $12.00 = $49.50 per overtime hour
The common mistake is to take 1.5 × the full $37.00 package, which gives $55.50 — overpaying by $6.00 an hour (half the fringe) on every overtime hour. That is 0.5 × the fringe rate times the overtime hours, thrown away. Overpaying is better than underpaying, but it still adds up, and it signals to a reviewer that the math was not done to the rule.
The cash-below-base caution
Under 29 CFR 5.32, you may credit fringe you actually furnish against the cash wage — meaning if you overpay fringe, your base cash can technically dip below the wage determination's basic rate on straight time, as long as the total package still meets base + fringe. Auditors scrutinize this hard, so it is worth flagging rather than relying on.
The critical trap: even when your straight-time cash is below the basic rate, overtime is still computed on the wage determination's basic rate, never on the lower cash you happened to pay. If the wage determination lists a $3.00 base and you paid $2.75 cash while over-contributing to a plan, your overtime regular rate is still the $3.00 basic rate — so overtime is (1.5 × $3.00) + fringe, not anything derived from $2.75. Excess fringe can offset base cash on straight time; it can never drag down the overtime base.
Fringe math is fiddly, repeats for every hour, and is exactly where a first certified payroll goes sideways — so it is worth letting a tool check the package, the Column 6 rate, and the overtime rate for you before you sign. You can try that on the free WH-347 builder in a couple of minutes, and see pricing if you file every week.
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