USPS postage adjustments: match the charge to the booked parcel
Match a USPS postage adjustment to the issued label, final package measurements and provider transaction before accepting or disputing the difference.
Reviewed 2026-10-08 · 2 min readIdentify the account and the adjusted parcel
Open the actual label-provider account independently and find the adjustment record. Match its carrier number with the active label and shipped parcel. Record whether the amount concerns postage, a provider charge or import processing; those costs need different supporting evidence.
USPS Automated Package Verification can detect differences between label characteristics and the processed package. USPS explains that adjustments are handled through Click-N-Ship or the relevant PC Postage provider.
Compare like-for-like package records
Use the sealed package’s measurements rather than a supplier’s product dimensions. Compare the entered service, origin and destination information with the booking. Identify any repacking, added bundle component or label replacement after the first quote.
| Check | Record or next action |
|---|---|
| Label data | Booked service, dimensions, weight and carrier number. |
| Packing record | Final outer measurements and gross weight. |
| Adjustment | Provider reference, stated reason and amount. |
| Supporting files | Measurement record, label and applicable transaction history. |
Dispute through the provider that issued the notice
USPS directs a customer who believes an APV notice is wrong to the instructions on the provider’s notice. Assemble the affected number and the package evidence for that process. Keep the dispute reference and response attached to the transaction.
A difference does not by itself establish whether the sender, warehouse or processing measurement was wrong. Describe the observed discrepancy and request review. Do not promise a refund before the responsible provider has confirmed an outcome.
Correct the dispatch process if the data was wrong
If review confirms that the label used incomplete measurements, identify the step that needs changing. For example, record final dimensions after a bundle is sealed, rather than reusing the single-unit package data. Keep the approved correction in later release instructions.
For outsourced packing, agree who measures, who buys the label and who receives adjustments. Reconcile the final charge with the shipment quote and warehouse invoice without treating unrelated duties or handling fees as the same adjustment.