Under international tax regulations — specifically CARF (Crypto-Asset Reporting Framework) and DAC8 (EU Directive 2023/2226) — Wickie is required to collect and validate your Tax Identification Number (TIN) as part of your account setup.
What is a TIN?
A Tax Identification Number (TIN) is a unique number issued by your country's tax authority to identify you for tax reporting purposes. Depending on where you live, it may go by a different name:
Country | Local Name |
Germany | Steuerliche Identifikationsnummer (Steuer-ID) |
Spain / Portugal | NIF (Número de Identificación Fiscal) |
Italy | Codice Fiscale |
USA | Social Security Number (SSN) or ITIN |
UK | Unique Taxpayer Reference (UTR) or National Insurance Number |
Every country has its own TIN format, length, and structure — which is why validation is country-specific.
What is TIN validation?
When you enter your TIN during account setup, Wickie's system automatically checks whether it is correctly formatted for your country. This is called TIN Validation.
We check that your TIN:
Follows the correct format for your country
Contains the right characters and length
Passes any official checksum rules
Is complete — not truncated or missing digits
Important: We do not access any government database or verify your identity via tax records. We only check that the format of your TIN is correct.
Why does Wickie need to validate my TIN?
Wickie is legally required to collect and validate TINs under two major international regulatory frameworks:
CARF — Crypto-Asset Reporting Framework A global OECD standard requiring crypto platforms to collect accurate taxpayer information and share it with tax authorities. Wickie operates within the scope of CARF.
DAC8 — EU Directive 2023/2226 The EU equivalent of CARF, requiring all crypto-asset service providers in the EU to collect, validate, and report TIN data for their customers.
Under both frameworks, Wickie must:
Collect accurate taxpayer information during onboarding
Prevent invalid or missing TINs from entering our records
Submit reports that pass official regulatory validation
Please note: If your TIN is invalid, it may delay your account verification. Double-check your TIN before submitting.
What happens during onboarding?
When you enter your TIN, our system will:
Identify your country
Apply the correct country-specific validation rules
Check the format and structure in real time
Flag any errors immediately so you can correct them
This process is quick, automated, and runs in the background. If there is an error, you will be notified and given the opportunity to re-enter your TIN.
Supported countries
TIN Validation is currently available for residents of the following 37 countries:
Austria · Belgium · Bulgaria · Croatia · Cyprus · Czech Republic · Denmark · Estonia · Finland · France · Faroe Islands · Germany · Gibraltar · Greece · Hungary · Iceland · Ireland · Italy · Jersey · Kazakhstan · Latvia · Liechtenstein · Lithuania · Luxembourg · Malta · Netherlands · Norway · Poland · Portugal · Romania · San Marino · Slovakia · Slovenia · Spain · Sweden · United Kingdom · United States of America
Frequently asked questions
I don't know my TIN. What should I do? You can usually find your TIN on a tax return, an official letter from your tax authority, or by logging into your country's tax authority website. If you're still unsure, please contact your local tax office.
My country is not in the list. Does that mean I don't need a TIN? No. If your country is not yet supported for automated validation, our team will handle the review manually. You may still be asked to provide your TIN for regulatory reporting purposes.
Is my TIN stored securely? Yes. All data collected by Wickie is processed and stored in accordance with our Privacy Policy and applicable data protection laws, including the Swiss nDSG and GDPR.
Still Have Questions?
Contact our support team at support@wickie.io