Dutch invoices (facturen) must show your KVK and BTW numbers, the BTW rate applied, and the BTW amount separately. The standard rate is 21%, with a reduced rate of 9% for food, books, and other essentials.
Netherlands invoice requirements
•Include your KVK (Chamber of Commerce) number and BTW-nummer
•Standard BTW rate is 21%; reduced rate is 9%
•Must show bedrag excl. BTW (net), BTW amount, and bedrag incl. BTW (gross)
•Invoices must be issued within a reasonable period after delivery