The legal deadline for deposit is :

• within fifteen working days after the publication date for publications in Belgium;
• within two months of publication for foreign publications.

A new deposit is required for each new edition, i.e. if significant changes are made to the content or form compared with previous editions of the publication.

This applies for changes to:

• the title and/or subtitle of a publication;
• cover design;
• language of the text;
• publisher name or imprint;
• author name;
• textual content other than minor corrections to misprints;
• product form (e.g. from hardback to paperback, another size, etc.);
• functional features (g. a font adapted for people with impaired vision).

If a work is reprinted (as good as) unchanged, it does not need to be re-deposited.