Yes, you can invest with a business account, but you need to request a LEI code to do this. You can request a LEI code at the Chamber of Commerce (Kamer van Koophandel (KvK)) if you are registered in the Business Register. In the Netherlands only the Chamber of Commerce can hand out LEI codes. Requesting this takes approximately ten working days and costs €65,- (excl. BTW) at the moment.