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Sweden TIN validator
Check whether a Sweden Personnummer follows the expected structure before you save it, send it to an API, or include it in a tax workflow.
Private by design
Your data stays in your browser
None of the TIN data you enter is ever saved to our servers — validation runs entirely on your device.
Validation Workspace
Validate Personnummer
Enterprise checks for Sweden tax identification numbers.
Instant one-by-one format validation
How Sweden tax IDs are formatted
In Sweden, the tax identifier is commonly known as Personnummer (Personnummer). The expected format is 10 digits (YYMMDD-XXXX) with Luhn checksum. Teams usually need a Sweden Personnummer check around tax registration, healthcare, banking, or before a record moves into billing, onboarding, or compliance review.
Valid examples
811228-9874670919-9530
Invalid examples
- 811228-9875 (Invalid checksum)
- 81122-9874 (Wrong format)
What this validator checks
Format and length
Confirms the number follows the expected Sweden pattern: 10 digits (YYMMDD-XXXX) with Luhn checksum.
Checksum logic
Runs the checksum rule used by Sweden when the public format includes one, helping catch typos that still look correctly formatted.
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
- Tax registration
- Healthcare
- Banking
- Government services
A format match does not prove that a Sweden 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: Skatteverket
Last reviewed: May 23, 2026. We update country guidance when public format rules change.
How to check a Sweden Personnummer
Use this check before a record reaches billing, tax reporting, or manual review.
Enter the Personnummer
Paste or type the Sweden 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 known Sweden structure, including length, separators, letters, and checksum rules where public guidance includes them.
Confirm important records
For onboarding, tax reporting, or compliance work, treat the result as a data-quality signal and confirm high-risk records with Skatteverket or your internal process.
Frequently asked questions
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