OpenChainGraph Suite · ART-574 · Payroll · Prime + Tax-Credit Verification

Certified Payroll / Prevailing Wage Recomputation

Runs a caller-declared certified payroll for one week against a wage determination, recomputing whether each worker was paid at or above the required combined rate for their classification with Contract Work Hours and Safety Standards Act overtime applied. Where you also paste a submitted certified payroll, the two are compared worker by worker; the recomputed side is derived here from the wage determination and hours, not copied from the submission. A prime contractor verifying a sub's weekly certified payroll can run this the same way as a Section 6418 credit-transferee diligencing a developer's prevailing-wage math before purchasing transferred credits. PWA mode adds the IRC Sec. 45(b)(7)-(8) correction-payment and penalty computation for any deficiency found.

Caller supplied wage determination + payroll Dual audience: prime or credit-transferee side Fixed-point money math Not tax or legal advice

Basis: Davis-Bacon rate compliance (base + fringe) · CWHSSA 1.5x overtime on base rate, fringe straight-time · IRC Sec. 45(b)(7)-(8) correction + penalty in PWA mode · no bundled state or WD table, wage determination is your declared parameter

🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.

⚠ This is not tax or legal advice. It does not verify your wage determination or classifications against the governing DOL publication, and it bundles no 50-state or program table for apprentice ratios, you declare those parameters. A divergence against a submitted payroll is an arithmetic finding about the figures you supply. Whether any classification, correction, or penalty figure is legally or factually correct is for counsel, a CPA, the Department of Labor, or the IRS. This page computes once when you press the button, stores nothing, runs on no schedule, and retains nothing.

Project and payroll week

The demo figures below are synthetic. They are not a copy of any real payroll record, and they are already loaded so you can press Run without entering anything of your own.

Project reference

Week ending label (your input, never a clock read)

Currency

Wage determination (per classification, minor units per hour)

JSON array: classification, base_rate_minor_units, fringe_rate_minor_units

Payroll rows for this week

JSON array: worker_id, classification, st_hours, ot_hours, rate_paid_minor_units, fringe_paid_minor_units

Submitted certified payroll (what a WH-347-style submission states)

JSON array, optional: worker_id, gross_minor_units. Leave empty and the verdict is INDETERMINATE, which is not agreement.

Apprentice ratio (optional, declared parameter)

JSON object, optional: permitted_ratio_per_journeyman, actual_journeyman_count, actual_apprentice_count

PWA mode: IRC Sec. 45(b)(7)-(8) correction and penalty

Enable PWA mode for any deficiency found

Intentional disregard declared (triples the wage component, doubles the per-worker penalty)

Sec. 6621 underpayment rate, annual percent (declared, dated by IRS quarterly)

Underpayment days (declared, for simple-interest approximation)

Payroll rows

PWA correction and penalty

Against the submitted payroll

Rejected inputs

Rationale

Execution Hash (SHA-256)

What this does not do

It does not forecast, project or model a scenario. It recomputes a stated payroll week and nothing else. It does not verify a wage determination or classification against the governing DOL publication, and it bundles no 50-state or program table for apprentice ratios, both are your declared parameters. It does not reassign excess-apprentice hours to the journeyman rate, and its Sec. 6621 interest figure is a simple-interest approximation, not the statute's daily-compounding convention. No WH-347 expiration date is encoded. It makes no assertion that any classification, correction, or penalty figure is legally or factually correct, and it is not tax or legal advice.

Shares a caller-declared-stack recomputation-against-a-submission shape with ART-572 Multi-Garnishment Stacking Recomputation, but is an independent tool with its own vocabulary, statutory basis and citations.