How long does it take for the top-up to be loaded on my OBU?

We advise you to pay your top-up in cash (at the Service Point only), or by credit card, fuel card or debit card, as the top-up will reach your OBU as soon as the payment is successfully completed and if your OBU is switched on and coupled to a vehicle.

If you paid your top-up via bank transfer, you need to take into account that:

  • It takes at least two working days for the top-up amount to be loaded onto your OBU and that the amount is only transferred on weekdays which are not bank holidays.
  • You need to enter your customer number, followed by your complete OBU serial number (with a space between these two references) in your payment instructions. Be aware that if you do not use the correct reference, it will take more time for the top-up amount to be loaded onto your OBU. Your customer number is found on your billing documents or in parentheses (in the top right-hand corner) just after your name on the Road User Portal.
  • Please note that giving a payment order when your OBU is red does not give you the right to drive in Belgium with a red OBU. You first must make sure the amount has been loaded on the OBU, consequently making the OBU turn green, before you can start driving in Belgium.
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