# Redact tax identification numbers

> Redact TINs, EINs, and equivalent tax identifiers from invoices, payroll files, and vendor records.

Canonical: https://bitbanger.in/entities/tax-id
Last updated: 2026-10-27

Category: Identity and government IDs · Entity type: `identity.tax_id`

Tax identifiers appear on almost every B2B invoice and almost never need to leave your systems. Redactly detects them from a tax cue plus the value that follows.

## How Redactly detects tax identification numbers

- Detected by a context cue for TIN, EIN, VAT, or tax ID followed by the value.
- Accepts both hyphenated and plain digit forms.
- An SSN used as a tax identifier is reported as identity.ssn, which is the more specific type.

## Why redact tax identification numbers?

Tax IDs are used for filing fraud and are frequently exposed in invoice PDFs sent to third parties.

## Example request

```bash
curl -X POST https://api.bitbanger.in/v1/redact \
  -H "X-API-Key: rdct_your_key_here" \
  -H "Content-Type: application/json" \
  -d '{"text": "Vendor TIN: 12-3456789, W-9 on file.", "style": "replace"}'
```

## FAQ

**Does Redactly redact tax identification numbers automatically?**

Yes. Send text to the API and every detected type is redacted, including tax identification numbers. To redact only this type, pass the value identity.tax_id in the entities filter. No training or configuration is required.

**What happens to tax identification numbers after redaction?**

With style set to replace, each match becomes [identity.tax_id] — the entity type in square brackets. Setting style to mask replaces every character with a block character, and remove deletes the span entirely.

## Related entity types

- [Social Security numbers](https://bitbanger.in/entities/ssn) — Redact US Social Security numbers in 3-2-4 format from text, JSON, and CSV. Format-matched, with no model dependency.
- [National ID numbers](https://bitbanger.in/entities/national-id) — Redact national identity numbers such as NIN, DNI, PESEL, and similar government identifiers.
- [Bank account numbers](https://bitbanger.in/entities/bank-account) — Redact domestic bank account numbers that carry no checksum and no fixed format.

Try it on your own text: https://bitbanger.in/entities/tax-id