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Freight Invoice Audit Software

Every carrier invoice checked against the rate agreed and the service delivered

Carrier invoices are audited properly or they are audited statistically. Pysar.AI checks every line on every invoice against the rate confirmation that agreed the price and the BOL and POD that record what actually happened — before payment, not after.

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Overview

Sampling is not auditing

Most freight invoice audit programmes are sampling programmes wearing a different name. A team checks the invoices above a dollar threshold, or a random tenth of the file, and pays the rest on trust because there are not enough hours to do otherwise.

That approach has a predictable failure mode: errors cluster below the threshold. A $75 detention charge billed against two hours of free time will never trip a $500 review rule, and it will recur on every load with that carrier until someone notices.

Automated audit changes the economics. Reading two documents and comparing every charge line takes seconds, so the marginal cost of checking the hundredth invoice is the same as the first. The threshold disappears and the small recurring leaks become visible.

The charges that generate disputes

Linehaul rarely disagrees — it is the number both parties remember. Disputes live in the accessorials. Detention billed without the agreed free time. Fuel surcharge calculated on a different basis than the rate confirmation specified. A lumper charge with no receipt attached. A reclass or reweigh applied without supporting documentation.

Each of those requires reading the rate confirmation's terms, not just its total. Free time before detention, the fuel surcharge basis, and whether lumper is reimbursable with receipt are contractual details expressed in prose on the rate con and in dollars on the invoice.

Because extraction captures the terms and not only the amounts, the comparison can be made in the terms the agreement was written in — which is the only way a detention dispute is ever actually resolved.

Pre-payment audit is a different business than post-payment recovery

Post-audit recovery is real work with real returns, but it is adversarial and slow: identify the overcharge, open a claim, chase the carrier, wait on a credit that may arrive next quarter. A meaningful share of identified overcharges is never actually recovered.

Catching the same error before the payment run costs a short conversation. The invoice is corrected and reissued, the relationship is intact, and the cash never leaves.

The requirement for pre-payment audit is speed. If the check takes three days, the invoice pays on terms before the check completes. Running the audit on arrival is what makes the pre-payment version possible.

What gets audited on each invoice

  • Linehaul rate against the rate confirmation
  • Fuel surcharge basis and calculation
  • Detention against agreed free time
  • Layover, TONU, and stop-off charges
  • Lumper charges against supporting receipts
  • Reweigh and reclass adjustments against the BOL
  • Duplicate invoices for the same load
  • Load and reference numbers across all documents
  • Payment terms and quick-pay discounts applied

Caught · Invoice bills detention at $75/hr from the first hour. The rate confirmation allows two hours free before detention accrues — $150 in unsupported charges flagged before the payment run.

What the audit covers

Every invoice, not a sample

Checking is automatic, so there is no dollar threshold below which invoices pay unreviewed.

Terms, not just totals

Free time, surcharge basis, and reimbursement conditions are read from the rate confirmation and applied to the charge lines.

Duplicate detection

Repeat submissions of the same load are caught on vendor, amount, invoice number, and date — including near-duplicates.

Exceptions with the numbers attached

Flagged invoices arrive with the specific line, the expected value, and the difference in dollars — ready to send back.

How it works

  1. 1

    Invoice arrives

    Carrier emails the invoice with its supporting documents to your Pysar inbox.

  2. 2

    Package is assembled

    The invoice is matched to the rate confirmation, BOL, and POD for the same load, splitting merged PDFs as needed.

  3. 3

    Charges are compared

    Each charge line is checked against the agreed terms and the delivery evidence, with variances quantified.

  4. 4

    Approve or dispute

    Clean invoices flow to the payment run; exceptions queue with the disputed line and amount stated.

Related

Rate confirmation extractionAP automation with 3-way matchingGuide: the freight three-way match

Questions

Freight invoice audit, answered

What is freight invoice audit software?

Software that checks every carrier invoice against the agreed rate and the delivery evidence before payment — linehaul, fuel surcharge, and accessorials against the rate confirmation, and the service actually performed against the BOL and POD.

Which freight billing errors are most commonly caught?

Detention billed without qualifying free time, fuel surcharge calculated on the wrong basis, lumper charges without a receipt, reweigh and reclass adjustments, duplicate invoices for one load, and accessorials never agreed on the rate confirmation.

Can invoices be audited before payment rather than after?

Yes, and that is the point — pre-payment audit stops the overcharge instead of chasing a refund. Each invoice is checked on arrival and only exceptions wait for a human.

How much of a freight invoice audit can be automated?

The comparison work — reading both documents and checking every charge line — runs without a person. Judgement calls, like whether to grant a disputed detention charge, stay with your team.

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