How to Declare Your Foreign Broker Account to the Belgian Authorities
A step-by-step guide to declaring your DEGIRO, Interactive Brokers, or Trade Republic account to the National Bank of Belgium.
Why You Must Declare Foreign Accounts
If you're a Belgian resident using a foreign broker like Interactive Brokers, DEGIRO, Trade Republic, or Saxo Bank, you have a legal obligation to declare this account to the Belgian authorities.
Failing to do so can result in fines, and the authorities already know about your account through international data sharing agreements.
Two Declaration Requirements
1. Central Point of Contact (CPC/CAP)
You must register your foreign account with the National Bank of Belgium's Central Point of Contact (Centraal Aanspreekpunt / Point de Contact Central).
Good news: This is a one-time registration.
2. Annual Tax Return
Every year, you must indicate on your tax return that you hold foreign accounts.
Step-by-Step: Declaring to the NBB
Step 1: Access the Portal
Go to the NBB web portal: https://cappcc.nbb.be/
Step 2: Log In
You can log in using:
- itsme app (recommended)
- eID card reader
Click on "Belastingplichtige" (NL) or "Contribuable" (FR).
Step 3: Enter Your Account Details
You'll need to provide:
- Account holder name(s) - Your name as it appears on the account
- Account number - Your broker account number
- Type of account - Securities account (effectenrekening)
- Country - Where the broker is registered
- Name of institution - The broker's legal name
- Address - The broker's registered address
Common Broker Details
| Broker | Country | Registered Address |
|---|---|---|
| Interactive Brokers | Ireland | 10 Earlsfort Terrace, Dublin 2, D02 T380, Ireland |
| DEGIRO | Germany | Rembrandt Tower, Amstelplein 1, 1096HA Amsterdam, Netherlands |
| Trade Republic | Germany | Kastanienallee 32, 10435 Berlin, Germany |
| Saxo Bank | Denmark | Philip Heymans Allé 15, 2900 Hellerup, Denmark |
Step 4: Submit
Once you've entered all details, submit the declaration. You'll receive a confirmation.
Alternative: Paper Form
If you prefer, you can mail a paper form to:
National Bank of Belgium Central Point of Contact 14 Boulevard de Berlaimont 1000 Brussels
Annual Tax Return Declaration
Where to Declare
In your annual tax return (Tax-on-Web), go to Section A and answer "Yes" to the question about foreign accounts.
Enter code: 1075-89 X
The "X" indicates "Yes."
You Don't Need to List Details
The tax return only asks whether you have foreign accounts, not the specific details. Those details are already registered with the NBB.
What Happens If You Don't Declare?
Automatic Data Sharing
Belgium participates in the Common Reporting Standard (CRS), an automatic exchange of financial account information between countries. Your broker already reports your account to their local tax authority, who shares it with Belgium.
Penalties
- Administrative fines
- Tax increases on discovered income
- In serious cases, criminal prosecution
Voluntary Disclosure
If you've been investing for years without declaring, consider voluntary disclosure. Penalties are typically reduced for taxpayers who come forward voluntarily.
Deadlines
NBB Registration
Must be completed before or when you file your tax return for that year.
Example: If you opened an account in November 2025, register with NBB before filing your 2025 tax return (due in 2026).
Tax Return
The standard deadline is typically June 30 for paper returns, with extensions for online filing.
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