Format guidance · Verified checks when available
Switzerland TIN validator
Review the expected Switzerland AHV / AVSstructure before you save it, send it to an API, or include it in a tax workflow. Interactive validation appears only after this country's rules pass authoritative-source verification.
Private by design
Transient validation, no public history
TINs are sent securely to the canonical validation API, processed in real time, and not persistently stored by the public checker.
How Switzerland tax IDs are formatted
In Switzerland, the tax identifier is commonly known as AHV-Nummer (AHV / AVS). The expected format is 13 digits (756.XXXX.XXXX.XX) with checksum. Teams usually need a Switzerland AHV / AVS check around social insurance, tax filing, employment, or before a record moves into billing, onboarding, or compliance review.
Valid examples
756.1234.5678.97756.9876.5432.18
Invalid examples
- 756.1234.5678.90 (Invalid checksum)
- 756.1234.5678 (Incomplete)
What this page covers
Format details below are guidance from public sources. Automated pass/fail results are offered only when the backend catalog marks this country as verified syntax.
Format and length
Confirms the number follows the expected Switzerland pattern: 13 digits (756.XXXX.XXXX.XX) with checksum.
Useful examples
Shows valid and invalid-looking samples so you can compare spacing, separators, letters, and digit counts before submitting real data.
When people usually check this number
- Social insurance
- Tax filing
- Employment
- Pensions
A format match does not prove that a Switzerland tax ID belongs to a specific person or business. Use the result as a first-pass data quality check, then confirm sensitive cases with official records.
Official source: Federal Tax Administration
Last reviewed: May 23, 2026. We update country guidance when public format rules change.
How to check a Switzerland AHV / AVS
Use this check before a record reaches billing, tax reporting, or manual review.
Enter the AHV / AVS
Paste or type the Switzerland tax identifier exactly as it appears in your source record. Spaces and separators are fine when they are part of the expected format.
Review the format result
Check whether the number matches the Switzerland syntax currently implemented here. The result does not query a tax-authority registry or confirm ownership.
Confirm important records
For onboarding, tax reporting, or compliance work, treat the result as a data-quality signal and confirm high-risk records with Federal Tax Administration or your internal process.
Frequently asked questions
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