Simply put, PayPal is completely free to use when you are gambling or playing with online casinos. PayPal does not enforce any kind of fee or interest when you make deposits or withdrawals for online casinos, so do not worry in that regard. However, some online casinos can be strict about that kind of thing and may enforce fees on certain PayPal payments. None of the casinos mentioned in the PayPal casino list above enforce fees, however, and none of the casinos on our online casino payment methods page do either.