18% of freight invoices contain errors. from inflated detention to incorrect rates. This 15-point checklist helps you catch incorrect charges before you authorize payment. Estimated time: 10-15 minutes per invoice.
18%
of invoices with detectable errors
5-7%
average savings with rigorous audit
15
critical points to verify
The Complete Checklist
Basic Data
Correct trip number
CriticalThe billed trip exists and corresponds to a real assignment.
Service date
HighThe invoiced date matches the actual trip date.
Tax data
CriticalCorrect RFC, legal name, and tax regime.
Rates and Costs
Correct base rate
CriticalThe invoiced rate matches the quote or contract.
Cargo type
HighThe correct rate was applied for the merchandise type (dry, refrigerated, hazardous).
Equipment type
HighRate matches the vehicle type used.
Discounts applied
MediumVolume discounts, prepayment, and similar terms are reflected.
Accessorials and Extras
Documented detention
CriticalEvidence of actual plant time (GPS, photos, POD).
Authorized handling
HighCharged handling fees were agreed in advance.
Tolls and permits
MediumAmounts match actual routes.
Fuel
HighIf included in the rate, it must not be billed separately.
Documentation
Complete POD
CriticalProof of Delivery with signature, seal, and date.
Valid Carta Porte
CriticalStamped Carta Porte with no errors.
Delivery photos
MediumPhoto evidence of merchandise condition.
No duplicates
CriticalThe trip has not been invoiced before.
A rigorous freight invoice audit can recover 3-7% of total transportation spend.
Priority Order
Not every point has the same impact. Here is the recommended order:
Critical points (always verify)
Points 1, 3, 4, 8, 12, 13, 15
High priority (verify on large invoices)
Points 2, 5, 6, 9, 11
Medium priority (monthly sampling)
Points 7, 10, 14
Estimated Time by Volume
| Volume | Recommended Method | Time/Invoice |
|---|---|---|
| 1-10 invoices/week | Manual checklist | 10-15 min/invoice |
| 10-50 invoices/week | Excel + rules | 5-8 min/invoice |
| 50+ invoices/week | Automation | 1-2 min/invoice |
What to Do When You Find Errors
Resolution Workflow
Document the error
Screenshot, trip reference, incorrect amount vs. Correct.
Notify the carrier
Send clear evidence and request a corrected credit note or invoice.
Set a deadline
Give 48-72 hours to resolve before escalating.
Log the case
Maintain error history by carrier to evaluate performance.
Adjust payment
Do not pay the original invoice until you receive the correction.
Automation with OCL Cargo
All 15 Points, Verified Automatically
With OCL Cargo, every invoice is audited automatically against the original assignment, received documentation, and agreed rates. You only review exceptions.
Key takeaways5 points
- 18% of freight invoices contain detectable errors, from inflated detention to incorrect rates.
- This 15-point checklist can help detect incorrect charges before authorizing payment, with an estimated time of 10-15 minutes per invoice.
- The order of priority: critical points (1, 3, 4, 8, 12, 13, 15), high priority (2, 5, 6, 9, 11) and medium priority (7, 10, 14).
- Audit time varies depending on volume: 10-15 min/manual invoice, 5-8 min with Excel, 1-2 min with automation.
- An automated system can verify all 15 points automatically, comparing invoice vs. Original assignment.
Frequently Asked Questions
According to industry studies in Mexico, 18% of freight invoices contain some type of error. The most common are: inflated detention (35% of errors), incorrect rates (25%), duplicate accessorials (20%), and excessive mileage (15%). This can represent 5-7% of your total freight spend.
Time varies depending on the method: 10-15 minutes per invoice manually, 5-8 minutes with Excel and formulas, 1-2 minutes with an automated system. For an operation of 200 invoices/month, this means 33-50 manual hours vs. 3-7 hours with automation.
The 7 critical points you should always verify are: correct trip number, origin/destination, agreed rate, weight/volume, detention, charged accessorials, and a valid CFDI with Carta Porte. These represent 85% of the monetary errors detected.
A TMS with an audit module automatically compares each invoice against the original assignment: agreed rate, route, authorized accessorials, actual detention, and a valid CFDI. The system detects discrepancies and generates alerts before you authorize payment. OCL Cargo automates all 15 checklist points.
Recommended process: 1) Document the error with evidence (screenshots, comparison), 2) Notify the carrier in writing (email), 3) Request a credit note or corrected invoice, 4) Withhold payment of the disputed amount (not the entire invoice), 5) Log the case for pattern analysis.