The transaction fee Coinbase charges for each transaction depends on the payment method used. Coinbase charges higher fees for purchases made with debit cards and instant bank transfers compared to standard ACH bank transfers.
Users who choose convenient payment methods like debit cards may be paying substantially more per transaction without fully understanding the cost differential, which can significantly erode returns on small investments.
Coinbase's dual-fee structure means retail users pay both an embedded spread (up to 2% of transaction value) and a separate explicit transaction fee on every buy or sell, making the true cost of trading higher than either charge alone suggests. Users paying with debit cards or instant bank transfers face significantly higher fees than those using standard ACH transfers, which can materially affect the economics of small or frequent trades. You can see your exact total fees — including the spread — by clicking the 'Preview' button before confirming any transaction in the Coinbase app or website.