Australian TFN detection · checksum-validated

Find and redact TFNs from any document

Upload TXT, CSV, PDF or DOCX files. We detect Australian Tax File Numbers using the official ATO checksum and redact them — straight from your dashboard.

Instant in-browser flow

Drag a file in, get a redacted version back. Works for plain text, CSV, PDF and Word documents.

Checksum-validated

Every match is validated against the official ATO TFN checksum to minimise false positives.

Manual redaction

Need to redact something else? Highlight any text or characters and download a clean copy.

Built for firms that answer to a regulator

Accountants, brokers and legal practices need to know where client data goes before approving a tool. Uploaded documents are never retained, TFNs are never stored or logged, access is role-based and audited, and card data never touches our systems.

  • Zero document retention
  • TLS in transit, encrypted at rest
  • Audit-logged activity
  • Australian Privacy Principles