Closing your bank account upon returning home
Some banks offer this service online, handy for people who come from abroad as you may need to keep your account after departure until you have received your deposit refund. Think of this and check it before opening an account upon arrrival.
BNP : https://www.bnpparibasfortis.be/nl/faq/hoe-sluit-ik-een-rekening-af
ING : https://www.bnpparibasfortis.be/nl/faq/hoe-sluit-ik-een-rekening-af
ARGENTA : https://www.argenta.nl/contact/veelgestelde-vragen/sparen/hoe-beeindig-ik-mijn-spaarrekening
KBC :
Closing a bankaccount should always be free of charge, inform yourself before paying any costs to the bank
https://economie.fgov.be/nl/themas/financiele-diensten/betalingsdiensten/gratis-afsluiten-rekening