How many credit cards should I have?
If you have trouble deciding which card to use when you are shopping, maybe you have too many.
Some experts advise that consumers should have no more than two personal credit cards. A third credit card may be useful for work expenses.
One credit card should be for regular, everyday expenses and gets paid off monthly. The second credit card is for emergencies like medical bills.
If you have regular work expenses, you could consider a third credit card to keep all your expenses on the same card.
Source: Business Insider