Important information for importers! Finnish Customs will implement a new guarantee system starting on May 24, 2025. With this change, the EORI number will no longer be sufficient for reserving a guarantee in customs declarations. Going forward, it will be mandatory to provide a GRN number in declarations.
When is a GRN number required?
The GRN number is mandatory in all standard and simplified customs declarations, for example when:
A centralized import customs declaration is submitted
Customs reserves a guarantee based on the declaration to cover customs debt or liability
A customs declaration for inward processing, temporary admission or end-use.
If the GRN number is missing in the above cases, Finnish Customs will reject the declaration.
Where can I find my company’s GRN number?
The GRN number can be found in your company’s valid customs authorization, such as:
Comprehensive Guarantee Authorization (CGU)
Deferred Payment Authorization (DPO)
Authorisations for special procedures, such as inward processing authorisation (IPO) or end-use authorisation (EUS).
Note! The number of the guarantee authorization alone is not sufficient – the actual GRN number is required.
Where should I inform my company’s GRN number?
Please provide your company's GRN number to your Scanlink contact person as soon as possible so that we can prepare for changes in good time. Or to email: import(at)scanlink.fi
Email subject: GRN Number / Company Name
The GRN number can be checked in Finnish Customs' "My Information" service starting from May 24, 2025.
More information is available on the Finnish Customs website.
Thank you for your cooperation!
Source: Finnish Customs