DAC8: what do the new European crypto rules mean for you?
From January 1, 2026, new European rules apply to sharing tax information about crypto. These rules fall under DAC8. This means Amdax is required to record certain information about clients and their crypto transactions and report it to the Dutch Tax Administration (Belastingdienst) every year. To meet this obligation, we need additional information from our clients. This includes your tax residence and your tax identification number, such as your BSN. On this page we explain what DAC8 involves, which details we need from you and what happens if you don't provide them.
Key dates
- January 1, 2026Amdax starts recording the data covered by DAC8.
- December 31, 2026Deadline to submit your tax details.
- January 31, 2027Amdax reports for the first time, on calendar year 2026.
What are DAC8 and CARF?
DAC8 is European legislation that requires crypto service providers such as Amdax to report information about their clients and crypto transactions to the Dutch Tax Administration every year.
CARF (Crypto-Asset Reporting Framework) is an international standard developed by the OECD. It allows tax authorities to exchange crypto information outside the European Union as well.
Both aim to give tax authorities better insight into crypto transactions and to combat tax evasion.
DAC8
European legislation
Governs the reporting of crypto information and its exchange between tax authorities within the EU.
CARF
International standard
Makes it possible to exchange crypto information with participating countries outside the EU.
How it works
Amdax holds a MiCAR license from the AFM. That's why we report to the Dutch Tax Administration. The Dutch Tax Administration exchanges your information with the country where you are a tax resident, if that is another country.
January 1, 2026
Recording
From this date we record the data covered by DAC8, including information about your crypto transactions in 2026.
December 31, 2026
Deadline for your details
Submit your tax details as soon as possible, by December 31, 2026 at the latest. If your details are still missing after that, your trading options may be temporarily restricted. We'll let you know in advance.
January 31, 2027
Reporting
We report the 2026 data to the Dutch Tax Administration.
Every year after
Exchange
Each year we report the data for the previous calendar year. The Dutch Tax Administration may also exchange this data internationally.
What does DAC8 mean for you?
We need to know which country or countries you are a tax resident of, and what your tax identification number (TIN) is there. In the Netherlands, for individuals, that's your citizen service number (BSN). For a B.V., foundation or other legal entity, the TIN is the RSIN. You provide this to us yourself in your own declaration, also called a self-certification.
This applies to you if you:
- open an account with Amdax;
- are already a client and we ask you to complete your details;
- move abroad or become a tax resident of another country in another way.
Personal
What do we ask of you?
In the client environment you enter your tax residence and TIN and confirm they are correct. Tax resident in more than one country? Enter each country with its TIN. For a joint account, each account holder completes their own declaration. Have a child's account? Then you complete the declaration on your child's behalf, with your child's BSN.
Business
What do we ask of your business?
For a B.V., foundation or other entity, we ask for the entity's tax residence and TIN, and the type of entity. Depending on that, we also ask for details of its controlling persons.
Why don't we fill this in for you?
We already know your address from your onboarding. Even so, we're not allowed to fill in your tax residence and TIN ourselves. The rules require you to provide and confirm them yourself. We do check your declaration against the details we already have.
How do you submit your tax details?
You can complete your tax details in the Amdax client environment.
Log in to your client environment.
On your home screen you'll see the banner. Click 'Start declaration' and follow the steps.
Enter your details.
Check your details and confirm your declaration.
What happens if you don't provide your details?
You'll first receive a request to complete your details. If you don't respond, we'll send you reminders. If you don't provide the requested details within the set period, Amdax may temporarily restrict your trading options.
Once you've provided the missing details and they've been processed, the restriction can be lifted.
Questions, or trouble completing your details? Contact our customer service.
What information do we report?
We only report what the law requires. We don't send the declaration itself: the Dutch Tax Administration receives a structured file with the information below. We report totals per year, per type of crypto and per type of transaction. We don't report individual transactions or wallet addresses.
Who you are
Name, address, tax residence(s), TIN, date and place of birth. For entities, also the details of controlling persons where required.
Exchanges
Per type of crypto: purchases and sales against euros or other currencies, and exchanges into other crypto. With number of units, gross amount and market value.
Transfers
All transfers to and from your account, including to external wallets, with type of crypto, amount and value. This includes staking.
When are you a tax resident of a country?
Your tax residence is the country where you are considered a resident for tax purposes. Usually this is the country where you live, work or spend most of your time. Whether you are a tax resident of a country depends on factors such as:
- you have a home address there or spend most of your time there;
- you have a tax number from that country's tax authority;
- your partner and children live there;
- your children go to school there;
- you are insured there, have a family doctor there or are a member of clubs or associations there.
Every country has its own rules. Not sure? Contact that country's tax authority or a tax advisor. Amdax cannot determine your tax residence for you.
Frequently asked questions
No. DAC8 doesn't change the existing tax rules for crypto. Whether and how much tax you pay depends on your personal situation. You remain responsible for filing a correct tax return.
Yes. CRS and DAC8 are separate obligations, and each institution needs its own declaration from you. The questions are similar, so you probably already know what to fill in.
Yes. We report to the Dutch Tax Administration, even if you are a tax resident of the Netherlands only. Your information is exchanged with other countries only if you are a tax resident of another participating country.
In the Netherlands, your TIN is your citizen service number (BSN). You'll find it on your passport, ID card and driver's license, among other places. For a B.V., foundation or other legal entity, the TIN is the RSIN. You'll find it on the extract from the Trade Register of the Netherlands Chamber of Commerce (KVK). For other countries, check the website of that country's tax authority or the European Commission's TIN pages.
Provide your new address and tax residence, together with your TIN in that country. Do this as soon as possible, so your declaration stays correct.
We only use your tax details to comply with the law. We pass them on to the Dutch Tax Administration. Are you a tax resident of another country? Then the Dutch Tax Administration may pass them on to that country. Read more in our privacy statement.
More information
Questions about your own declaration? Contact us through the client environment. Questions about your tax return are best put to your tax advisor.
This page provides general information about DAC8 and CARF and is not tax advice. Amdax B.V. is a crypto service provider licensed under MiCAR and supervised by the AFM.