Many companies share the same frustration: a discount was agreed with the carrier, yet actual spend lands well above the model. Auditing invoices for customers, we see the same categories of issue again and again.
1. Dimensional weight calculated on a different basis
Divisors, rounding rules and whether packaging is included vary by carrier and even by service type. If the model used one basis and billing used another, the difference compounds on every shipment.
Fix: maintain the billing basis per carrier and service in the system, and estimate cost using the real basis before the label is created.
2. Accessorials ignored during modeling
Residential delivery, remote area, address correction, fuel and peak surcharges are individually small but broadly applied. Many cost models only count base freight.
Fix: price predictable accessorials into the rate-shopping stage, especially residential and remote-area determinations.
3. Discounts not correctly applied
Tier determination, contract effective dates and whether a specific service falls inside the discount scope all drift in practice. Without line-level checking, these are nearly invisible.
Fix: load the contract rate table into the system and compare expected against actual charges line by line.
4. Address quality driving extra fees
Malformed addresses, mismatched postcodes and missing unit numbers trigger correction fees and, in bad cases, failed delivery and return — doubling the cost.
Fix: validate and auto-correct addresses before label creation to eliminate these at the source.
5. Refundable claims never filed
Guaranteed-service refunds have a firm claim window and expire. Checking delivery times by hand is impractical, so most companies quietly forfeit this money.
Fix: let the system compare promised service against actual delivery and file claims automatically.
Summary
None of these five requires renegotiating a contract. What they share is that only line-level verification finds them — and line-level verification requires a system. That is why freight audit tooling usually pays for itself within a few months.