When you start working via YoungOnes, you work for yourself. You decide when and where you work. In other words: you're your own boss.
Because you essentially run your own mini-business as a freelancer, you need a VAT ID (btw-id). By applying for a VAT ID, the government knows you are working independently, allowing you to invoice officially.
You can apply for your VAT ID through the Chamber of Commerce (KvK) or the Tax Authorities (Belastingdienst). This process usually takes about two weeks.
Until then, you can complete three gigs without a VAT ID. After that, you will need your VAT ID to continue working via YoungOnes.
You can find everything you need to know about applying for a VAT ID here.
