Declare a foreign bank account to the NBB Central Point of Contact

Load https://becivic.be/skills/bank-nbb-foreign-account-declaration and walk me through it for my situation.

This skill walks the declaration of a foreign bank account to the Belgian National Bank's Central Point of Contact (Point de Contact Central / Centraal Aanspreekpunt — CAP / CPC) [code-impots-revenus-1992-art-307] [nbb-cap-portal]. The obligation applies to every Belgian-resident taxpayer holding a foreign bank account at any point during the tax year — a category that includes nearly all newly-arrived foreign residents who retain bank accounts in their country of origin. Most new arrivals are unaware of the obligation; this skill exists to surface and walk it.

Scope. The skill covers the NBB CAP registration step plus the parallel tick on the annual income-tax declaration. Foreign-account income reporting (the actual income from the foreign account) is part of the broader income-tax declaration (deferred to a future walk on tax-declaration / Tax-on-Web). The skill does not cover Belgian-domestic accounts (which are auto-registered by the bank with the NBB at account opening — no user action) or business accounts (different regime under the Belgian VAT and accounting framework).

Statutory basis

The foreign-account declaration obligation derives from the Code des impôts sur les revenus 1992 (CIR 92 / WIB 92) article 307 §1/1 [code-impots-revenus-1992-art-307]. The provision was tightened in 2014–2015 with the introduction of the NBB CAP-side registration as the centralised data store; since then, Belgian-resident taxpayers must:

1. Declare every foreign account to the NBB CAP (one-time registration per account, plus notification of changes / closure).
2. Tick the box on the annual income-tax declaration (Tax-on-Web) that confirms foreign account holdings.

The CAP holds the account-existence data; the tax authority (SPF Finances) cross-references the CAP data with declared income to detect non-declaration of foreign income.

The CAP also holds Belgian-domestic account-existence data (banks register accounts on opening) and registers of life-insurance contracts and various other financial-contract types — but those are auto-registered by the institution; only foreign accounts require active user action.

Eligibility — who must declare

Every Belgian-resident taxpayer who at any point during the tax year held:

• A foreign bank account (in any currency, in any country, of any balance).
• A foreign cash account at a brokerage or investment platform.
• A foreign payment-services account (e.g. Revolut, Wise — see Known surprises below).
• A foreign life-insurance contract (separate registration regime).
• A digital-asset / crypto account at certain regulated platforms (regime evolving; verify current scope).

The "at any point" wording is strict. Closing the foreign account during the year does not exempt — the year-end declaration must register it (as held during the year and closed).

The first declaration deadline for a new arrival is typically the deadline of the first annual tax declaration covering a Belgian-resident period (typically June-October of the year following commune registration). The CAP registration itself can be done at any time before that — earlier is better, as it spreads the administrative load.

Required information

Per foreign account:

• Account holder identity: NISS, name.
• Country of the account.
• Bank / institution name.
• IBAN or equivalent account identifier.
• Date of opening (and date of closure if closed during the year).
• Account type (current, savings, brokerage, etc.) — the NBB CAP form has structured options.

The user does not declare the balance or income to the CAP — only the account's existence. Income is handled separately on Tax-on-Web.

Process

Stage 1 — CAP registration

The NBB CAP registration runs through the official portal at nbb.be/en/central-point-contact-cap. Authentication is via:

• eID + card reader (most common).
• Itsme (once bootstrapped — see bank-account-opening-resident for the chicken-and-egg issue with Itsme bootstrap for new arrivals).
• For users who cannot authenticate digitally: paper form submission to NBB. Slower; verify the current paper-form availability.

The user logs in, accesses the CAP module, and registers each foreign account with the structured fields above. Registration is typically immediate on submission; confirmation is provided.

Stage 2 — Annual tax declaration tick

On the annual income-tax declaration via Tax-on-Web (or paper declaration), the user must also tick the dedicated box confirming foreign account holdings. The box is in section XIV / Comptes à l'étranger / Buitenlandse rekeningen. The tick is separate from and additional to the CAP registration; both are required.

The first tax declaration of a new resident covers the year of arrival (partial-year residency). The Belgian tax year follows the calendar year; the declaration is due in June-October of the year following.

Stage 3 — Notification of changes / closure

If a registered foreign account is closed, transferred to a different institution, or has materially changed details, the user updates the CAP record — typically via the same portal. The CAP record is then marked closed / updated for the relevant date.

If a new foreign account is opened during the year (or after the initial declaration), it is added to the CAP record at the next opportunity. The deadline for new-account declaration aligns with the next annual tax-declaration cycle.

Known surprises

• Most new arrivals are unaware of the obligation. Belgian banks do not flag the foreign-account declaration to new account-opening customers; the obligation is a tax-side responsibility, not a bank-side one. The first the user typically hears of it is at tax-declaration time, often after a delay of months.
• Revolut / Wise / N26 are foreign accounts. Revolut is Lithuanian-licensed, Wise is UK / Belgian for some products, N26 is German. Users with accounts at these neobanks need to declare them — even when the account feels "Belgian-resident-friendly" through localisation. Verify the licensing entity.
• Joint accounts require declaration by both account holders if both are Belgian residents. Each declares independently with their own NISS.
• Closed-during-year accounts still need declaration. A user who arrived in March, closed their UK account in May, must still declare the account existence for the period it was held.
• Income-tax declaration tick is mandatory but easily missed. New users on Tax-on-Web sometimes overlook the foreign-account section. The CAP-side registration alone is not sufficient; the tax-side tick is also required.
• Cryptocurrency accounts may be in scope. Account-style holdings at regulated centralised exchanges (Coinbase, Kraken, Bitstamp via foreign entity) are increasingly treated as in-scope for CAP. Self-custody wallets (private-key-based, no centralised provider) are typically out of scope. The regime is evolving; verify current guidance.
• Sanctions for non-declaration. Non-declaration is treated by SPF Finances as a tax-side administrative offence; fines apply. More consequentially, the omitted account creates a reverse-of-burden in any later tax dispute — the burden shifts to the taxpayer to prove the omitted account did not generate undeclared income. Fix earlier rather than later.
• Pre-2014 omissions. The obligation pre-dates 2014 in some respects (the income-tax-declaration tick existed earlier; the centralised CAP registration tightened the regime). Users who have been Belgian-resident for years without ever declaring foreign accounts face a substantial cleanup task; consult a tax adviser for retroactive compliance ("régularisation fiscale" — separate procedural regime).
• Non-resident-then-resident transitions. A user who was a non-resident in Belgium with a Belgian non-resident account and home-country resident account, and then becomes Belgian resident: the previously-non-resident Belgian account is now resident-Belgian (auto-registered by the bank); the home-country accounts are now foreign-Belgian-resident and need CAP declaration.
• Spouses of Belgian residents. A non-Belgian-resident spouse who becomes Belgian resident through family reunification has the same obligation from the date of becoming resident. The Belgian-resident spouse is unaffected for accounts they themselves held — only the new resident's accounts are in scope.

Verify with

• NBB Point de Contact Central: nbb.be/en/central-point-contact-cap — authoritative source for the CAP procedure and current registration portal.
• CIR 92 art. 307 §1/1: Justel consolidated text.
• SPF Finances Tax-on-Web: finances.belgium.be for the annual income-tax declaration's foreign-account section.
• Tax adviser for retroactive declaration ("régularisation fiscale") of long-omitted accounts; the procedure has its own deadlines and reduced-fine regime.

Verify with the NBB CAP portal before declaring — the registration procedure and form structure can change.

References

See frontmatter references for full bibliographic detail. Inline tags above use the [id] shorthand.