So I have set up my own company (Sole proprietorship) and from my understanding (correct me if I'm wrong) I need to create invoices and save for future reference when declaring tax? Now, most affiliate programs don't need invoices and they will automatically pay commission to the bank account. What annoys me a bit is that I have to chase down aff managers and bug them about company info and VAT to put on my invoices. Some of them seem a bit confused and some don't even know the VAT so I'm starting to think this is not normal procedure? I'm based in northern Europe (EU) by the way if that makes any difference.