Freight brokers lose 3–7% of invoice value to overbilling — detention overcharges, FSC miscalculations, unauthorized accessorials, duplicates. ConCheck compares every line against your rate confirmation and hands you a copy-ready dispute email. Free, no login. Upgrade for unlimited audits & history.
Or run the demo — a real overbilling example (linehaul +$150, FSC 25% vs 22%, detention 6 hrs vs 4-hr cap).
Every check is deterministic and shown in your report — no black box. We compare each invoice line against the rate con:
Carriers routinely bill 4 hrs of detention when the rate con caps at 2 — at $75/hr that's a $112.50 overcharge on one load. Catch it before the wire goes out; the 180-day contest window closes fast.