Overview
Validate Finnish Business IDs (Y-tunnus) and VAT numbers, look up companies, and autofill business forms. Runs locally.
Finnish Toolkit speeds up everyday Finnish business admin. Validate a Y-tunnus (Business ID) instantly with the official checksum, convert it to a VAT number, and autofill business details into forms. • Y-tunnus validation (official PRH algorithm) • VAT-number conversion and checking • One-click business lookup and form autofill Validation runs locally and instantly. Free for validation; an upgrade unlocks live PRH company lookup and bulk checks. Made in Finland for Finnish businesses, bookkeepers, and anyone filling in company forms.
Details
- Version0.1.0
- UpdatedJune 17, 2026
- Offered byOtto.Maenpaa
- Size25.75KiB
- LanguagesEnglish
- DeveloperOtto Mäenpää
Kanavakatu 1 3009 Helsinki 00160 FIEmail
otto.maenpaa@gmail.comPhone
+358 44 3026453 - TraderThis developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.
Privacy
Finnish Toolkit — Y-tunnus & VAT has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
Finnish Toolkit — Y-tunnus & VAT handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
