New Zealand Credit Cards: How I Compare ANZ, ASB and Westpac Cards Before Applying

The first time I looked at credit cards in New Zealand, I made the classic mistake of starting with the rewards. Airpoints, cashback, bonus points on groceries, it all sounds appealing until you realise the card you picked charges a fee that quietly eats the benefit. These days I work backwards. I check what the card costs me when I behave badly, what it costs when I behave well, and only then do I look at the perks.

This is how I compare the cards from ANZ, ASB and Westpac, three of the biggest names in New Zealand banking, before I commit to anything. I am not telling you which card to get, because that depends entirely on how you spend and how you repay. I am showing you the questions I ask.

Start With How You Actually Pay

Before comparing any product, I ask one honest question: do I clear the balance in full every month? If the answer is yes, the interest rate is almost irrelevant to me, and I can focus on annual fees, rewards and interest-free days. If the answer is no, or even sometimes no, then the interest rate becomes the single most important number on the page, and rewards cards become a trap rather than a benefit.

I know people who chase a premium rewards card while carrying a balance month to month. The interest they pay on that balance typically outweighs whatever points they earn. A plain low-rate card would serve them far better. Being honest about your own habits saves more money than any clever optimisation.

What I Look at on Every Card

Annual fee

Fees vary widely across the market, from no fee at all to a few hundred dollars for premium cards with travel benefits. Each bank publishes its current fee on the card's product page, and I always read the schedule rather than trusting a comparison site that may be out of date. A no-fee or low-fee card is usually the right starting point unless I can clearly see the benefits covering the cost.

Interest rate on purchases

Credit card rates in New Zealand tend to sit well above home loan and personal loan rates, and they vary by card type. Standard and rewards cards typically carry higher rates than low-rate cards. I look at the purchase rate, but I also check the cash advance rate and whether interest starts immediately on cash withdrawals, which it usually does with no grace period.

Interest-free period

Most cards offer a number of interest-free days on purchases if you have paid the previous statement balance in full. The exact period varies by issuer and card. The detail that trips people up is that if you carry any balance forward, you generally lose the interest-free period on new purchases until you clear everything. I treat the interest-free days as a reward for paying in full, not as a free loan.

Comparing ANZ, ASB and Westpac

All three banks offer a range of cards covering the same broad categories: low-rate, standard, rewards and premium travel. Rather than quoting figures that change, I compare them on structure.

Rewards structure

Some cards earn points that convert into travel or vouchers, others offer cashback, and some link into airline programmes. The question I ask is whether the points have a realistic path to being used. Points that expire or that need a huge balance before redemption are worth less than they look. I also check whether there is a cap on how many points I can earn per year, since that changes the maths for heavy spenders.

Relationship benefits

If I already bank with one of these three, I check whether holding the card alongside my everyday account unlocks anything, such as fee waivers, bonus points or better access to other products. Sometimes the card is more valuable as part of a bundle. Other times the bundle is a nudge to move everything to one bank, and I would rather keep my options open.

Travel and insurance extras

Premium cards often advertise complimentary travel insurance, purchase protection or lounge access. I read the actual terms. Cover often depends on paying for the trip with the card, comes with exclusions, and may have age or duration limits. If I would buy a separate travel insurance policy anyway, I do not let the card's promise sway me.

Reading the Fine Print the Regulators Care About

New Zealand has rules around responsible lending that apply to credit card providers. The Credit Contracts and Consumer Finance Act sets out disclosure and lending obligations, and the Commerce Commission enforces consumer credit rules. When I apply, the lender will ask about my income, expenses and existing debts. I treat that as a useful check on myself, not just paperwork. You can read the official guidance for borrowers on the Consumer Protection website, which is run by the government and explains your rights when taking on credit.

I also read the disclosure document the bank provides. It sets out fees, rates and what happens if I miss a payment. It is not exciting reading, but it is where the real cost of the card lives.

Credit Limit: Lower Is Often Smarter

Banks usually offer a limit based on my income and existing commitments, and it can be tempting to accept the highest one. I do the opposite. A lower limit acts as a natural guardrail. If I know I will rarely spend more than a certain amount in a month, I ask for a limit not much above that. Lenders also consider your total available credit when you apply for other loans, such as a mortgage, so a large unused limit can reduce how much you can borrow elsewhere. If you are planning a home purchase, my guide to fixed and floating home loan rates in New Zealand covers the other side of that decision.

Build Habits Before You Chase Perks

Once I have a card, the habits matter more than the product. I set up an automatic payment from my everyday account to clear the full statement balance each month. If I cannot afford to do that, I treat the card as a warning sign and reduce spending until I can. If you ever find yourself slipping into carrying a balance, the principles in my piece on avoiding the revolving credit trap apply no matter which country you are in, even though that article is written around Thailand.

Check your credit file

Every application leaves a mark on your credit file, and too many in a short window can look like financial stress to lenders. I only apply when I have decided on a card, rather than applying to several and seeing who says yes. If you are new to this, it also helps to understand how your history gets scored before you apply for anything.

My Quick Decision Checklist

When I am down to two or three cards, I run through a simple process in my head. First, can I realistically pay this card off in full every month? Second, does the annual fee make sense against the rewards I would actually use, not the ones I imagine using? Third, is the interest rate acceptable if I slip once or twice? Fourth, are the extras like insurance something I would genuinely use? If a card passes all four, it goes on the shortlist. If it fails on the first question, none of the others matter.

I also keep an eye on the central bank's perspective on household debt. The Reserve Bank of New Zealand publishes financial stability material that explains how interest rate changes flow through to borrowers, which is useful context when you are deciding how much credit to take on.

Final Thoughts

Comparing ANZ, ASB and Westpac cards is less about finding a perfect winner and more about matching a card to your real behaviour. The best card for a disciplined full-balance payer is not the best card for someone who sometimes carries debt. I would rather pick a plain card I use well than a flashy one that costs me in ways I only notice later. Take your time, read the disclosure document, and let the numbers on the fee schedule, not the marketing, make the decision.