Would there be any restrictions on the amount of money to enter or the amount of compensation awarded? As long as the pool is kept within a private circle, i.e. among colleagues, and is not run on a commercial basis, it is permitted to run a pool without a license, even if participants have to contribute a small amount to the prize pool. As soon as the pool is also open to outside participants and is promoted externally, you quickly enter a gr e y area. This is especially true if participants also have to pay to take part. Strictly speaking, this is not permitted. If the organizer is giving away large prizes, it may also be the case that gambling tax is payable. For prizes with a value of €450,- or more, the organizer must withhold gambling tax.