Comprehensive Carrier Invoice Auditing
PatrolPuffin detects 10 types of carrier billing discrepancies across USPS, UPS, and FedEx.
10 Discrepancy Types Detected
Rate Mismatch
Charges that don't match your negotiated rates or published tariffs.
DIM Weight Overcharge
Incorrect dimensional weight calculations inflating your shipping costs.
Late Delivery Refund
Service guarantee violations eligible for automatic refunds.
Duplicate Charge
The same shipment billed multiple times on your invoice.
Surcharge Error
Incorrectly applied surcharges (residential, fuel, delivery area).
Address Correction Fee
Fees charged when the address was actually correct.
Void Not Credited
Voided shipments that were still charged on your invoice.
Zone Pricing Error
Shipments billed at the wrong zone based on origin/destination.
Weight Discrepancy
Actual package weight doesn't match billed weight.
Service Downgrade
Express service billed when ground service was delivered.
Supported Carriers
USPS
Full audit coverage for USPS Commercial Plus and Priority Mail.
UPS
Complete UPS invoice auditing including Ground, Air, and International.
FedEx
FedEx Express and Ground invoice reconciliation.
How It Works
Connect Your Accounts
Link your carrier accounts to PatrolPuffin in minutes.
Automatic Auditing
We analyze every invoice line against rates, contracts, and service guarantees.
Recover Savings
Review discrepancies, file claims, and track recovered funds.
Start Auditing Your Carrier Invoices
See how much you can recover with PatrolPuffin.