The payment methods supported by Coinbase vary by country, and are determined by our partnerships with local banks and payment processors.
In some countries, the only supported payment methods are credit/debit cards (Visa & MasterCard). Cards are only able to be used for buys. At this time we are not able to transfer funds back to a card, so they cannot be used to sell digital currency. Please take note of this limitation before using Coinbase if you are in a country where credit/debit cards are the only payment option, because you will not be able to sell digital currency. You are still able to send digital currency from your Coinbase account to another wallet or exchange.
Countries affected by this are: Australia, and Singapore.
As Coinbase expands we hope to keep adding more payment methods so that customers in these countries will have access to the full range of payment options.