Life in plastic: what you need to know about credit cards

By MAS Team | 9 September 2019

There are benefits to using credit cards – they help you build a positive credit score (assuming you repay in full and on time), and can often offer perks such as Airpoints or other cash rewards. But if they’re abused, they can put you into a financial hole that takes time to escape from.

No one-size-fits-all

Shop around to find the right credit card for you. You don’t need to go with the card offered by your usual bank. Many offer benefits such as free travel insurance, free smartphone screen repair, or cashback. But don’t be wooed by perks if you’re not comfortable paying high annual fees – there are many low-fee options out there.

Build your credit score

Your credit score affects whether you can get credit as well as offering access to better rates on things like utilities. To build a credit score, make sure you pay off your credit card in full, on time, each month. It’s also a good idea to put regular items such as your phone bill on your credit card to prove you’re good with credit.

Don’t do dumb debt

When you have a high credit limit, it’s tempting to spend up large. But don’t let credit cards burn a hole in your pocket. Eventually, you have to pay it back and interest rates mean you will end up paying more for those things. Is that pair of fancy shoes or new video game really worth it if you end up paying 20% or more on top of the price tag? If temptation is too strong, reduce your credit card limit to what you can reasonably pay back within the billing cycle.


Red to black

Staring down the barrel of a large credit card debt can be terrifying. Breathe – you can get through this. You want to kick that debt to touch as soon as you can, so budget for the maximum repayment from each pay cycle. But be realistic, there’s no point going into more debt because you’ve left yourself with too little at the end of the month. You could also consider a balance transfer onto a new low- or no-interest credit card. This should only be done as a last resort and it’s crucial you pay the debt back in the time limit stipulated, or you may end up paying high interest on that card.

Credit cards and mortgages

If you’re shopping for a mortgage, you should consider reducing your limit or even closing down your credit cards. Mortgage lenders consider your available credit when determining how much you can borrow and even if you only ever spend $3,000 on your $10,000 limit card, the lender will likely judge you on the limit, not the amount you actually spend.

Another thing to be aware of is ensuring you repay your credit cards in full and always keep your balance as low as possible to ensure you can get the mortgage you need.

Avoid store cards

Store credit cards are a dumb debt trap and should be avoided. They will often offer an in-store discount or other perks, but come with high-interest rates and can’t be used in other stores. Having multiple store cards can be hard to keep track of and can leave you financially in the red.

  • Share

You might also like
A mainfreight truck travelling on a highway

Investments deep dive - Mainfreight

28 January 2021

The MAS KiwiSaver Plan and the MAS Retirement Savings Plan funds invest in Mainfreight, and we had a chat with Tom Phillips from investment manager JBWere, about why Mainfreight is such a good investment, and what the future holds for the company.


Common holiday home insurance claims and how you can avoid them

29 November 2018

These tips can help safeguard your holiday home from some of our most common claims caused by water damage, stormy weather or burglars.


Kickstart your savings with KiwiSaver

27 July 2020

Whatever your saving goal is, here are the ins, outs and need-to-knows so you can get your nest egg sorted with KiwiSaver.