PayPal, like any business, needs to make a profit and they do this by charging transfer and currency fees. Adding funds to your PayPal account is free. But, you may see fees when you receive money via the platform. The currency conversion fees aren’t a fee as such, but rather a mark-up on the rate. This affects you if you gamble at a casino in another part of the world with a different currency. However, unless you’re super hot on your forex rates, then you’re not really going to notice much difference.