Hello guys, I'm creating a small not-for-profit online marketplace. I've been working on this project for over a year now and it's almost finished; I expect to be able to launch it in about 2 months or so. But the legal/business side of it is putting me off so much that I just don't know what to do. I would hire an accountant to answer my questions but I'm a broke student and cannot afford it. So I would greatly appreciate your advice. So, my website will basically have 3 groups of sellers: 1- Individuals selling handcrafted products and such. Not registered for VAT 2- Small businesses that don't make enough to be registered for VAT 3- Businesses with a big enough turnover to be registered. The problem is that I don't really understand how VAT works for an online marketplace operator (AKA me). I can set taxes to be "non-applicable" for groups 1 and 2 if I want to, and set it to the normal 20% (UK) for the 3rd. So here is how it will work. A customer buys a product for X (incl. VAT) amount of money. The actual money goes to my account. The seller (a big company) can see that they have X money in their wallet to be requested. They request it, so I transfer it to them. Should I transfer the tax of said product to them, so they can pay it to HMRC by the end of the tax year? Should I keep it and pay it in their behalf myself? What if they don't pay it and they get me in trouble? As you probably know, marketplace operators are now liable for any unpaid VAT and stuff like that, so I really don't want to get intro trouble. But there is so little actual information about this on the Internet that the more I read the more confused I am. The website will be locked down to the UK at first by the way, so only selling and shipping within the UK. I think this will make my life easier. But I do want to open it to the EU eventually. How should approach this matter if I want to do that? And if I open it to the EU, should I charge taxes depending on the billing address? Shipping? Or what? It's just that I have read many contradictory information about this. Thanks!