Each Payoneer card fees and charges can be found on the top right menu after you logged in your account. IT can differ according to accounts.
Normally, yearly Payoneer charges 36 USD from your available balance. Each month 3 USD will be charged.
But if you have made 3 transactions in a calendar month it will be $1/month, hence $12 in a year.
If you do not have balance in your account, then it won't charge anything.