The problem
Carrier invoices contain errors. Most go undetected.
Studies consistently show that 1–5% of shipping invoice charges contain errors — incorrect weights, wrong surcharges, duplicate charges, and more. At scale, that's thousands of dollars per billing cycle that companies pay without question.
Carrier billing systems are automated, but the inputs (weight, dimensions, address classification) can be wrong — and the charges follow.
Most companies don't have a system to compare invoiced charges to expected costs at the shipment level.
Invoice errors are distributed across thousands of shipments, making them impossible to spot by reviewing totals or samples.
Dispute windows are time-limited — if you don't catch an error within the carrier's dispute period, you've lost the ability to recover.
Manual invoice auditing is time-consuming and typically only catches the largest or most obvious errors.
How it works
The most common shipping invoice errors
These are the errors that appear most frequently on carrier invoices. Knowing what to look for is the first step to catching them.
Incorrect DIM weight
The carrier measures package dimensions differently than your system, resulting in a higher DIM weight and a larger charge.
- Carrier remeasures with automated scanners
- Rounding differences in dimensions
- Different DIM divisor applied than negotiated
Wrong residential classification
A commercial delivery address is classified as residential by the carrier, triggering a $4–$6+ surcharge that shouldn't apply.
Address correction fees
The carrier "corrects" an address that was already correct, or applies a correction fee for a minor change that didn't require it. Fees range from $12–$20.
Duplicate charges
The same shipment appears twice on an invoice, or a surcharge is applied that was already included in a negotiated all-in rate.
Service level mismatch
You shipped via Ground but were billed at Express rates, or the service level on the invoice doesn't match the service level you selected.
Zone errors
The destination zone on the invoice differs from the correct origin-to-destination zone, resulting in a higher or lower charge than expected.
How RateRunners helps
Catch invoice errors before they become paid mistakes
RateRunners automatically compares every invoiced charge to the expected cost for that shipment — surfacing errors, overcharges, and discrepancies before you pay.
Compare invoiced DIM weight to your recorded package dimensions
Flag residential surcharges applied to known commercial addresses
Detect address correction fees on shipments with verified addresses
Identify duplicate charges across invoice line items
Verify service level and zone accuracy on every shipment
Track error patterns by carrier and surcharge type over time
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