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How to detect fake invoices before you pay them: a step-by-step guide

Fake invoices usually succeed because teams lack fast, contextual proof. Here’s how to catch them using repeatable signals.

Step 1: Verify vendor identity and history

  • Check vendor bank details vs prior payments
  • Confirm email/domain matches expected vendor patterns
  • Watch for “urgent” pressure paired with account changes

Step 2: Compare invoice changes to what’s normal

If an invoice is “different” in a way your team can’t quickly explain, it’s a signal. Good fraud controls turn differences into reviewable evidence.

Step 3: Use automation for consistency

Vantirs fingerprints vendors using QuickBooks Online payment history and flags bank mismatches and spoofed email signals so your team doesn’t rely on memory.

Want a reviewable workflow?

See how Vantirs catches suspicious invoices before the wire leaves the account.