Demurrage Invoice Audit Checklist
A structured D&D invoice audit you can fill, render and file — every FMC-required field checked in order.
Sources & references
- 46 CFR Part 541 — FMC D&D billing requirements
- Freight audit industry error-rate reporting
Demurrage, detention and storage tariffs are set by each carrier, terminal and contract and change frequently. The preloaded figures are editable industry-typical examples, not quotes — always verify against the current published tariff or your service contract before paying or disputing an invoice.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Most demurrage and detention overcharges survive because nobody audits in a fixed order. This checklist walks the five checks that catch nearly everything: clock start versus the actual availability event, free time as contracted (working versus calendar days, closures credited), rates against the right tariff version and equipment column, excludable events inside the billed window, and the FMC's mandatory invoice fields.
About Demurrage Invoice Audit Checklist
Fill it per invoice and export the PDF — the audit record itself becomes your dispute attachment or your pay-file documentation. The verdict field forces a decision: pay, dispute partially (the normal outcome — most flawed invoices are partially right), dispute fully, or demand substantiation where the invoice doesn't even contain enough data to audit, which under 46 CFR 541 is itself a ground. Run the audit while the invoice is fresh: tariff versions are easiest to pin within days, terminal records age out of portals, and dispute windows (commonly 30 days) are unforgiving. Teams that audit 100% of D&D invoices with a fixed checklist typically report recovery or avoidance on a double-digit percentage of billed dollars — the errors are that routine.
How to use Demurrage Invoice Audit Checklist
- 1Fill in the fields on the left — the document preview updates live as you type.
- 2Review the rendered text until every line reads exactly as you want it.
- 3Click “Download PDF” for a print-ready copy, or “Copy text” to paste it elsewhere.
- 4Keep the file with your shipment records — generation happens locally in your browser.
Why use Demurrage Invoice Audit Checklist?
- ✓Live preview that updates with every keystroke
- ✓One-click print-ready PDF export, generated entirely client-side
- ✓Structured fields so nothing required gets forgotten
- ✓Free, private and reusable — your entries never leave the browser
Frequently asked questions
What percentage of D&D invoices contain errors?+
Freight-audit firms consistently report material error rates on D&D lines — wrong day counts, stale tariff versions, dry rates on special equipment, free time ignored from contracts. Double-digit percentages of billed dollars are commonly flagged. The errors aren't malicious so much as systemic: billing systems automate tariffs that change weekly and contracts they can't see.
What does 46 CFR 541 require an invoice to show?+
The 2024 FMC rule's core list: identities of billing and billed parties, container and B/L numbers, the billed time period with start/end events, daily rates and total, the tariff or contract authority for the charge, and the dispute process with contacts and timeframe. A US-trade invoice missing these is defective — request a compliant reissue before the dispute clock pressures you.
Should I audit invoices I intend to pay anyway?+
Especially those — the audit file is what turns this quarter's 'pay in full' into next quarter's pattern evidence. Three audited invoices showing the same wrong free time become a contract-compliance claim; thirty become a rate-negotiation exhibit. The PDF this tool renders is deliberately formatted as a filed record, not scratch notes.
Working days or calendar days — which applies?+
Whichever your tariff or contract says, and they mix: free time in working days, charges in calendar days is a common (and unfavourable) combination. Holidays and terminal closures may extend free time or be billable depending on the clause. It's checklist item 2 because getting the day-counting convention wrong invalidates everything after it.
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