When you convert one cryptocurrency to another, Coinbase will charge a spread on the transaction. A Coinbase Fee will also apply to the conversion. The total fee for the conversion will be disclosed on the trading preview screen prior to completing the transaction.
Users who frequently convert between cryptocurrencies pay the dual-layer fee on every conversion, and the cumulative cost across multiple conversions can significantly erode portfolio value.
Every time you buy, sell, or convert cryptocurrency on Coinbase, you pay at least two layers of cost: a spread embedded in the displayed price plus an explicit Coinbase Fee, meaning the true cost is higher than the price shown before you preview the transaction. Debit card purchases incur significantly higher fees than bank account transactions, making payment method selection a material financial decision. You can reduce your fees by using a linked bank account instead of a debit card and by reviewing the full fee breakdown on the transaction preview screen before confirming.