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The Benefits/Disadvantages of using a credit card
never carry a balance on a credit card. there is almost always a cheaper way to borrow money. the exception to that rule is when you are offered a 0% promotion on a credit card, but even then watch out for cash advance fees and how payments are applied (typically to promotional balances first). paying interest on daily spending is a bad idea. generally, the only time you should pay interest is on a home loan, car loan or education loan.  basically that's because those loans can either allow you to reduce an expense (e.g. apartment rent, taxi fair), or increase your income (by getting a better job). you can try to make an argument about the utility of a dollar, but all sophistry aside you are better off investing than borrowing under normal circumstances. that said, using a credit card (with no annual fee) can build credit for a future car or home loan. the biggest advantage of a credit card is cash back. if you have good credit you can get a credit card that offers at least 1% cash back on every purchase.  if you don't have good credit, using a credit card with no annual fee can be a good way to build credit until you can get approved for a 2% card (e.g. citi double cash). additionally, technically, you can get close to 10% cash back by chasing sign up bonuses. however, that requires applying for new cards frequently and keeping track of minimum spend etc. credit cards also protect you from fraud. if someone uses your debit card number, you can be short on cash until your bank fixes it.  but if someone uses your credit card number, you can simply dispute the charge when you get the bill. you don't have to worry about how to make rent after an unexpected 2k$ charge. side note: it is a common mis-conception that credit card issuers only make money from cardholder interest and fees. card issuers make a lot of revenue from "interchange fees" paid by merchants every time you use your card. some issuers (e.g. amex) make a majority of their revenue from merchants.