To keep your account secure and comply with global financial regulations, we are legally required to verify the identity of our business customers. A Tax Identification Number (TIN) is a unique identifier that helps us do this.
Collecting your company’s TIN is a standard part of our Know Your Business (KYB) process. It allows us to:
Confirm your company’s identity
Prevent fraud
Keep Pliant secure for all customers
Where to find my company’s TIN
Below is a guide to locating your company’s TIN in the countries where we require it. If your country is not listed, the information is publicly available and we are able to retrieve it automatically during onboarding.
Austria
What it’s called: Steuernummer
Format: 9-digit number, often formatted as XX XXX/XXXX
Where to find it: Any official letter or tax assessment (Steuerbescheid) from the tax office (Finanzamt), or in your FinanzOnline portal account.
Germany
What it’s called: Steuernummer
Format: 10 to 13 digits, often formatted with slashes (e.g., XX/XXX/XXXXX)
Where to find it: Your company’s tax registration certificate (Bescheinigung über die steuerliche Erfassung), company’s tax returns (Körperschaftsteuererklärung), or letters from the tax office (Finanzamt).
Important: Do not confuse the Steuernummer with the Handelsregisternummer (company registration number).
Ireland
What it’s called: Tax Reference Number (TRN)
Format: 7 digits followed by 1 or 2 letters (e.g., 1234567T or 1234567WH)
Where to find it: On correspondence from the Irish Revenue Commissioners, your Revenue Online Service (ROS) account, or your Corporation Tax return (CT1).
Luxembourg
What it’s called: Numéro d'identification fiscale (NIF), Steueridentifikationsnummer
Format: 11-digit number for companies
Where to find it: On official tax or social security documents, or a tax residency certificate (Certificat de résidence fiscale) issued by the Administration des contributions directes (ACD)
United Kingdom
What it’s called: Unique Taxpayer Reference (UTR)
Format: 10-digit number
Where to find it: The front page of your Company Tax Return (form CT600), any “Notice to deliver a Company Tax Return,” or letters from HM Revenue & Customs (HMRC).
Need more help?
If you’re unsure after checking the documents above, here’s what you can do:
Ask your company’s accountant or financial advisor – they should have this information readily available.
Contact your national tax authority via their official website:
Austria: Bundesministerium für Finanzen
Germany: Bundeszentralamt für Steuern
Ireland: Revenue Commissioners
Luxembourg: Administration des contributions directes (ACD)
United Kingdom: HM Revenue & Customs (HMRC)
You can also use the OECD TIN Portal to search for TIN formats in other countries.