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Validate Switzerland TIN (AHV / AVS)

Free online AHV-Nummer validator. Instant validation using OECD-compliant rules for Switzerland tax identification numbers.

Validation Workspace

Validate AHV / AVS

Enterprise checks for Switzerland tax identification numbers.

Instant one-by-one format validation

Country

Switzerland

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AHV / AVS format check

Enter a AHV / AVS to validate for Switzerland

Awaiting input

Paste values with or without separators. Validation also checks a normalized value.

Use a real AHV / AVS sample to verify format compliance before filing.

About Switzerland TIN (AHV / AVS)

The AHV-Nummer is the official tax identification number used in Switzerland. Format: 13 digits (756.XXXX.XXXX.XX) with checksum

Valid Examples

  • 756.1234.5678.97
  • 756.9876.5432.18

Invalid Examples

  • 756.1234.5678.90 (Invalid checksum)
  • 756.1234.5678 (Incomplete)

Common Use Cases

  • Social insurance
  • Tax filing
  • Employment
  • Pensions

Official source: Federal Tax Administration

Frequently Asked Questions

What is an AHV-Nummer?
The AHV-Nummer (Alters- und Hinterlassenenversicherungsnummer) is Switzerland's social insurance number. It begins with '756' (Switzerland's ISO country code) followed by 10 digits.
How is the AHV number validated?
The last two digits form a check number calculated using EAN-13 checksum algorithm on the first 11 digits.

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