The translations that HAMANO-san mentioned sound very formal, and of course, they are correct. But you can also say like below. They sound a little bit more casual than HAMANO-san's answer, but still polite. 1. How would you like to pay? お支払い方法はどうされますか？ NOTE: In my view, most shop/restaurant staff in Japan don't really say the phrase because many people prefer to pay cash. Plus, there are tons of shops and restaurants in Japan that accept only cash payment. If you want to pay by credit card, you need to ask staff whether you can do that. Shop staff would say "How would you like to pay?" only when you purchase a very expensive thing such as jewelry. 2. Would you like to pay in cash or card? 現金ですか、それともカードですか？ 3. Would you like a receipt? レシートはいりますか？

1. How would you like to pay? お支払いは、どうされますか？2. Would you like to pay in cash or card? 現金になさいますか、それともカードになさいますか？ 3. Would you like a receipt? レシートは、お入用(いりよう）でしょうか？ These are Japanese used in rather expensive stores and restaurants.