Freight Audit Software: Detect Invoice Errors Before They Hit AP

Princeton TMX freight audit software automates end-to-end auditing – validating charges, surfacing errors, and giving teams full visibility into true transportation costs by ensuring every invoice is accurate before it’s paid.

Gain control of your freight spend

INVOICE VALIDATION

Validate invoices before payment

Ensure every invoice matches what was tendered, shipped, and delivered without manual review

• Match invoices against contracts and routing guides — automatically detect rate errors, accessorial mismatches, and incorrect charges
• Validate shipment details in real time — compare carrier invoices with actual shipment data for precise auditing
• Reduce manual workloads — let automation handle the repetitive checks so your team can focus on exceptions

DISPUTE MANAGEMENT

Fix errors quickly and transparently

Streamline communication with carriers to prevent recurring issues, payment delays, and relationship damage

• Auto-flag exceptions for review — identify incorrect charges, missing documentation, or out-of-tolerance variances instantly
• Manage disputes within a single platform — track communication, approvals, and resolutions without spreadsheets or email chains
• Improve accuracy over time — uncover patterns in common disputes to drive corrective actions with carriers

FINANCIAL ACCURACY

Build trust with your finance team

Gain complete visibility into freight spend with tools that ensure accuracy from invoice to payment

• Consolidate all invoices and audit data — maintain a clean, centralized record of what was billed, approved, and paid
• Strengthen internal controls — eliminate duplicate payments, unauthorized charges, and unapproved rate usage
• Improve forecasting and budgeting — rely on accurate, validated financial data for confident transportation spend management

What is freight audit software?

Freight audit software automatically checks every carrier invoice against your contracts and actual shipment data to catch rate errors, duplicate charges, and authorized accessorials before AP pays them. It replaces the manual, line-by-line invoice review that lets overcharges slip through, and gives finance teams an accurate, centralized record of true transportation cost.

Princeton TMX combines freight audit with dispute management and financial controls in one platform, so exceptions are flagged, disputed, and resolved without leaving your TMS.

Freight audit and payment in one workflow

Auditing an invoice is only half the job – paying the right amount is the other. Princeton TMX connects freight audit and payment so validated invoices flow straight to payment (including through partners like Loop), while flagged exceptions are held for review. That closed loop prevents the duplicate and overpayment leakage that happens when audit and payment live in separate systems.

How to audit freight invoices: match each invoice to its contracted rate and routing guide, compare billed charges against actual shipment data, auto-flag any discrepancy or missing documentation, and route exceptions to dispute resolutions – then release clean invoices for payment. Freight audit software runs these steps automatically on every invoice.

One platform for all your tech

Unify Workflows

All modules, data points, and teams work together to eliminate silos and minimize disruptions.

Real-Time Data

Every shipment update flows instantly across teams, carriers, and partners.

End-to-End Visibility

From planning to analytics, the entire shipment lifecycle stays connected.

Scale Operations

Configurable infrastructure allows you to operate across teams, locations, and modes without adding complexity.

Trusted by leading shippers

"Load tendering, which previously involved manual emails and data entry, now operates with minimal human intervention"

"They're helping make our supply chain more strategic and data-driven. We have folks across our business asking to see the data that our TMS is showing us—it's that valuable across our entire organization."

"Today, we have clear, real-time control over deliveries because of Princeton TMX."

Real shippers. Real results.

Learn how industry leading shippers are reducing costs, improving visibility, and gaining control of their freight with Princeton TMX's Unified Transportation Management System.

Freight audit software FAQ

What is freight audit software?

Freight audit software automatically validates carrier invoices against contracts and shipment data to detect rate errors, duplicate charges, and incorrect accessorials before payment – reducing overpayments and giving finance accurate cost data.

What is freight audit and payment (FAP)?

Freight audit and payment pairs invoice validation with the payment process: invoices are verified for accuracy, disputed if wrong, then released for payment. Princeton TMX handles the audit side – validating charges, flagging errors, and managing disputes. For shippers who need a managed freight payment solution, we can connect you with trusted partners.

What’s the difference between a freight bill audit and a freight invoice audit?

They’re used interchangeably – both mean checking a carrier’s charges for accuracy. “Freight bill audit” is the older term; “freight invoice audit” is the same process applied to the digital invoice Princeton TMX validates automatically.

How much do freight invoice errors cost shippers?

A meaningful share of carrier invoices contain billing errors, and without automated auditing most are paid in full. Automated freight audit recovers these overcharges and prevents duplicate payments.