what percentage does coinbase take when you sell

Coinbase takes a percentage when you sell based on your withdrawal method. For withdrawals through a wire transfer, Coinbase charges a fee of 0.25 BTC per withdrawal, while for withdrawals through an ATM, the fee is 0.30 BTC per withdrawal. The fees are currently not refundable, but you can opt for a different withdrawal method if you prefer. Keep in mind that the fees may vary depending on the location of your withdrawal, so it's best to check the withdrawal fees on Coinbase's website before making a withdrawal.