Free tool · No account · No upload
Duplicate payment detection tool
Paste a vendor invoice CSV and flag likely duplicates before cash leaves — or after. Heuristics for review, not a verdict. Your pilot replaces the sketch.
Paste CSV — stays in your browser
Columns: invoice_id, vendor_id (or vendor name), amount (or line_total_usd). Optional: invoice_date.
Scan results
Invoices parsed
Likely duplicate pairs
Illustrative exposure (sum of pair amounts)
- $12,500high
Same vendor + same amount within 14 days
INV-AP-100 ↔ INV-AP-100B · VEND_ACME · rows 2/3
- $6,500high
Exact same invoice ID appears twice
INV-AP-102 ↔ INV-AP-102 · VEND_BETA · rows 5/6
Client-side scan only — nothing is uploaded. Heuristics flag likely duplicates for review; they are not proof of a recoverable payment. A free pilot audits your real invoice files.
Related: How duplicate payment detection works · Vendor overpayment recovery · ROI calculator