Free duplicate invoice checker

Paste rows as vendor, invoice number, amount, date (copy from a QuickBooks or Xero bill list export). Nothing leaves your device. Please leave out bank details.

Find duplicates

Why duplicates happen

The same bill arrives by email and by mail, a vendor resends a "past due" copy, or an invoice number gets a suffix when retyped. Checking vendor + amount + similar invoice numbers catches most of them before the money is gone.

Informational only; not accounting advice.