Cyprus Tax Identification Number

Detects Cyprus Tax Identification Number patterns. This pattern is based on a Microsoft Purview built-in sensitive information type. Due to the numeric format, corroborative evidence keywords are essential for reliable detection.

Type: regex
Engine: universal
Confidence: high
Confidence justification: High confidence: eight digits followed by a single letter is a distinctive format for Cypriot tax identification numbers. Added context gating and exclusion rules improve precision and reduce incidental matches.
Detection quality: Verified
Jurisdictions: cy, eu
Regulations: gdpr
Data categories: pii, financial, government-id
Scope: narrow
Risk rating: 7
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Compatible, Netskope: Compatible

Pattern

\b\d{8}[A-Z]\b

Corroborative evidence keywords

TIC, tax identification, φορολογικός, αριθμός, ΤΙΝ, TIN, tax identification number, tax number, tax return, IRD, NIF, tax ID, inland revenue, taxpayer identification, αριθμός φορολογικού μητρώου, ΑΦΜ, Abgabenkontonummer, adóazonosító, adószám, belastingnummer (+47 more)

Proximity: 300 characters

Should match

12345678A — Cypriot TIN with letter suffix
98765432Z — Cypriot tax identification number
11223344M — Cypriot TIN format

Should not match

1234567A — Only 7 digits, too short for Cypriot TIN
123456789A — 9 digits with letter, exceeds Cypriot TIN format
template example placeholder record identifier — Template/sample context should be excluded even when anchor words are present

Known false positives

Generic numeric sequences in non-tax contexts such as reference numbers or account identifiers Mitigation: Require corroborative evidence keywords within the proximity window to distinguish tax identifiers from general numeric data.
Numbers from other identification schemes with similar digit patterns Mitigation: Layer with jurisdiction-specific detection to prioritise matches in tax-related documents and cross-reference with other identifier types.

References

Cyprus Tax Identification Number entity definition - Microsoft Learn