Official links
Government and professional systems frequently used for company, tax and social security procedures in Türkiye. Most sites are in Turkish.
Company formation and trade registry
- MERSİSmersis.gtb.gov.trCompany formation, trade name search, share transfers and registry applications
- Trade Registry Gazetteticaretsicil.gov.trRegistry announcements, articles of association and signature circulars
- E-TUYSetuys.sanayi.gov.trActivity and capital reporting for foreign-owned companies
- BTSO (Bursa Chamber of Commerce)btso.org.trBursa trade registry appointments, chamber registration and activity certificates
Tax office and e-documents
- Digital Tax Office (GİB)dijital.gib.gov.trTax certificates, payments, invitation-to-explain and settlement petitions
- E-Beyanname (e-filing)ebeyanname.gib.gov.trVAT, withholding, provisional and corporate income tax returns
- E-Defter (e-ledger)edefter.gov.trCertificate uploads, e-document guides and taxpayer lookup
- Official Gazetteresmigazete.gov.trDaily publication of laws, presidential decisions and communiqués
Social security and professional bodies
- SGK E-Bildirgeebildirge.sgk.gov.trEmployee entry/exit filings, incentives and debt lookup
- E-Work Permitecalismaizni.csgb.gov.trWork permit applications for foreign shareholders and staff
- TÜRMOBturmob.org.trUnion of accountants: tax calendar, circulars and guides
- Bursa Chamber of Accountantsbursasmmmo.org.trLocal announcements and professional decisions