Share your insights or perspective on the financial matter presented in the input.

Would I ever need credit card if my debit card is issued by MasterCard/Visa?
Credit cards are often more fool proof, against over-drawing. Consider Bill has solid cash flow, but most of their money is in his high interest savings account (earning interest) -- an account that doesn't have a card, but is accessible via online banking. Bill keeps enough in the debit (transactions) account for regular spending, much of which comes out automatically (E.g. rent, utilities), some of which he spends as needed eg shopping, lunch. On top of the day to day money Bill keeps an overhead amount, so if something happens he doesn't overdraw the account -- which would incur significant fees. Now oneday Bill sees that the giant flatscreen TV he has been saving for is on clearence sale -- half price!, and there is just one left. It costs more than he would normally spend in a week -- much more. But Bill knows that his pay should have just gone in, and his rent not yet come out. Plus the overhead he keep in the account . So there is money in his debit account. When he gets home he can open up online banking and transfer from his savings (After all the TV is what he was saving for) What Bill forgets is that there was a public holiday last week in the state where payroll is operated, and that his pay is going to go in a day late. So now he might have over drawn the account buying the TV, or maybe that was fine, but paying the rent over draws the account. Now he has a overdraft fee, probably on the order of $50. Most banks (at least where I am), will happily allow you to overdraw you account. Giving you a loan, at high interest and with an immediate overdraft fee. (They do this cos the fee is so high that they can tolerate the risk of the non-assessed loan.) Sometimes (if you ask) they don't let you do it with your own transcations (eg buying the TV), but they do let you do it on automated payements (eg the Rent). On the other hand banks will not let you over draw a credit card. They know exactly how much loan and risk they were going to take. If Bill had most of his transactions going on his credit card, then it would have just bounced at the cash register, and Bill would have remembered what was going on and then transferred the money. There are many ways you can accidentally overdraw your account. Particularly if it is a shared account.