Why do I need to provide my tax identification number in the application?
As part of the evolution of the requirements applicable to digital financial services in Europe, and in particular the progressive implementation of the European DAC8 regulation, Vancelian will ask its users to provide their tax identification number in the application.
This information helps ensure consistent account identification and is now part of the data required for the proper functioning and compliance of the services offered.
What is a tax identification number?
A tax identification number is a personal identifier issued by the tax authorities of your country of residence.
Depending on the country, this identifier may:
- Have a different name
- Follow a specific format
- Be composed solely of digits or of a combination of digits and letters
By way of example:
- In France, it is the tax number composed of 13 digits
- In Germany, the Identifikationsnummer composed of 11 digits
- In Spain, the DNI (Documento Nacional de Identidad) composed of 8 digits and one letter
In the application, this identifier may be referred to as NIF or TIN, which are generic terms used to group these numbers depending on the country.
When will this information be requested?
Initially, the tax identification number will be requested during registration on the application, so that new users have a complete account from the outset.
At a later stage, existing users will be invited to provide this information directly in the application, with the exception of Italian users for whom this data is already collected.
Where can I find my tax identification number?
Your tax identification number generally appears on official documents issued by the tax authorities of your country, such as tax assessments or fiscal documents, and may also be available via your personal space on the tax authority’s website.
To find the exact name and format corresponding to your country, you can consult the official database provided by the European Commission.
What is the DAC8 directive and what are its obligations?
The DAC8 directive is a European regulation aimed at strengthening tax transparency in the crypto-asset sector.
It requires service providers operating for residents of the European Union to collect, retain, and transmit certain information to tax authorities.
Concretely, DAC8 requires:
- Identify their clients who are residents of the European Union, whether individuals or legal entities
- Collect and retain detailed information on their crypto-asset transactions (disposals, transfers, returns, etc.)
- Transmit this data annually to the tax authority of their country of establishment, which will then share it with other European tax authorities
What information must be reported?
Under DAC8, service providers will be required to transmit annually to their tax authority a structured set of information relating to:
1. The reporting entity (the service provider):
- The identity of the company
- The reference Member State
- The registration or authorisation number
2. Users (clients):
- First and last name or company name
- Address
- State of tax residence
- Tax identification number (NIF)
- Date and place of birth for natural persons
3. Crypto-asset transactions:
- For each type of reportable crypto-asset:
- The nature of the crypto-asset (BTC, ETH, stablecoin, etc.
- The number of transactions carried out during the year
- The volumes and value expressed in fiat currency (for example, euros)
- The nature of the transaction (crypto/fiat, crypto/crypto, transfer)
This information must be transmitted no later than 31 January of year N+1 for transactions carried out during year N.
Tax authorities will then exchange this data with one another as part of European administrative cooperation.
Key dates of the DAC8 directive:
- 1 January 2026: start of the application of reporting obligations for crypto-asset transactions.
- 31 January 2027: first reporting by service providers to tax authorities, covering transactions carried out in 2026.
What happens if I do not provide this information?
When this information is required and is not provided, certain features of the application may be temporarily limited until the necessary information has been completed.