FAQ Onegate
What is OneGate?
OneGate is a completely secured online application that the National Bank of Belgium provides to declarers. The application allows the companies to submit declaration forms online, either by entering the data manually or by uploading files.
Access to OneGate
How to access OneGate?
Please find the login page to the application. There are several ways to connect.
- via the CSAM portal,
- by means of a commercial certificate.
What is CSAM and how to register?
Since 2022, it is possible to connect securely to OneGate through the "CSAM" portal dedicated to Belgian general interest services. This system is already used by other federal applications such as Intervat, Finprof, Dimona, DMFA, ...
In addition to guaranteeing your identity at the level of access to the OneGate application, you can now manage your own accesses and the accesses of your employees thanks to the federal service My eGov role management.
A page on our website is dedicated to this type of connection. Additional information can be found directly on the CSAM portal site.
How to connect with an electronic certificate?
For some surveys, the username and password combination are not secure enough and this method cannot be used. OneGate recognizes Electronic Certificates from Globalsign, Isabel and Quo Vadis. These are the same certificates that are accepted by E-Government-applications such as Intervat, Finprof, Dimona, DMFA and DRS.
These certificates can be purchased from the following providers:
Currently accepted certificates:
✓ GlobalSign GCC R45 PersonalSign 3 CA 2020
✓ GlobalSign GCC R45 PersonalSign 3 CA 2022
Currently accepted certificates:
✓ Isabel Certification Authority
✓ Isabel Certification Authority Root
Currently accepted certificates:
✓ QuoVadis Belgium Issuing CA G2
✓ QuoVadis EU Issuing Certification Authority G4
These providers issue Electronic Certificates after payment and after authentication by the applicant. It is therefore necessary to retrieve these certificates in person with an ID-card.
When logging in to OneGate, choose the option "identification with an Electronic Certificate" and choose a copy of the certificate.
During the first login, the declarer will be asked an additional identification. The declarer will thus have to enter an identification-code (KBO-number). During the next hours, access will be granted to the user. This is confirmed via email.
If the certificate was already registered and valid, the user will get immediate access.
Third Party Declarers
What is a Third-Party Declarer?
The OneGate-Application allows declarers to give access to a third party (accounting firm, fiduciary office...) to fill in their surveys for them.
What do I do when I want to assign a Third-Party Declarer?
- If you logon with CSAM, you should use the OneGate’s User Management module (CSAM method) to create a third-party user.
- If you logon with an electronic certificate, you should fill this form in and send it to the OneGate Access Management Team. They will take all next steps regarding the Third-Party activation.
Compatibility of web browsers
Which browsers can I use with OneGate?
OneGate application on the following operating systems and browsers:
- Windows: Edge, Mozilla Firefox, Chrome or Opera.
- Linux: Mozilla Firefox, Chrome or Opera.
- Mac: Mozilla Firefox or Safari.
We cannot guarantee you proper operation on other web browsers.
OneGate Opening hours
| Monday - Friday | 00:00 - 24:00 |
| Saturday | 00:00 - 16:00 |
| Sunday | 12:30 - 24:00(*) |
(*) Declarations submitted on Sunday will only be processed from Monday 00:00.