How EFTPOS, Debit and Credit Cards Differ
💳 Three Cards That Work Very Differently
Most New Zealanders carry a card to pay for things, but the card in your wallet can work in one of three ways, and the difference matters for your money. EFTPOS, debit, and credit cards all let you tap or swipe to pay, yet what happens behind the scenes is very different. One spends your own money instantly, one spends your own money over a network, and one spends the bank money you have to pay back.
The Quick Version
- EFTPOS card: takes money straight from your bank account, works in New Zealand, traditionally needs a PIN.
- Debit card: also spends your own money, but runs on a network like Visa or Mastercard, so it works online and overseas and supports contactless.
- Credit card: spends the bank money up to a credit limit, which you repay later, with interest if not paid in full.
🎮 How Each Card Moves Your Money
EFTPOS
An EFTPOS card is linked directly to your everyday account. When you pay, the money leaves your account almost straight away. Because it only spends what you have, you cannot go into debt with it, though some accounts allow an overdraft. Traditional EFTPOS works at New Zealand terminals but generally not online or overseas.
Debit Cards
A debit card is also tied to your own account, so you are still spending your own money. The difference is that it runs on an international card network, which means it works for online shopping, overseas purchases, and contactless payments. It looks and behaves like a credit card at the checkout, but there is no borrowing involved.
Credit Cards
A credit card is a short-term loan from the bank. You spend up to a set credit limit, and the bank bills you each month. If you pay the full balance by the due date, you usually pay no interest. If you only pay part of it, interest is charged on the rest, often at a high rate.
🔒 Fees, Contactless and Risk
Contactless Payments
Contactless, often called payWave or tap and go, lets you pay by holding the card near the terminal. It is fast and convenient, but research suggests tapping makes spending feel less real, so it can lead to spending more without noticing. Some merchants also add a surcharge for contactless or credit transactions to cover their costs.
Common Fees
| Fee | Where it shows up |
|---|---|
| Contactless or credit surcharge | Added by some shops and cafes at the till |
| Annual or monthly card fee | More common on credit cards and rewards cards |
| Overseas and currency fees | Charged when spending in another currency |
| Credit card interest | Charged when the balance is not paid in full |
Fraud and Protection
Cards on a network like Visa or Mastercard, both debit and credit, can often dispute a wrong or fraudulent charge through a chargeback. Credit cards in particular offer strong protection because the disputed money is the bank money, not yours, while it is sorted out. With a debit card the money has already left your account, so a dispute can take longer to refund.
💡 When to Use Which
For Everyday Spending
An EFTPOS or debit card is ideal for day-to-day spending because you can only spend what you have, which protects you from debt. If you want online and overseas use and contactless, a debit card gives you that without the borrowing risk of a credit card.
When a Credit Card Helps
A credit card can be useful for online purchases, travel, and the extra protection it offers, and some come with rewards. The catch is that it only stays cheap if you pay the full balance every month. Used that way, it is a convenient tool. Used as a way to spend money you do not have, it becomes expensive fast.
The Honest Test
If a credit card balance is creeping up and not being cleared each month, the rewards and convenience are almost never worth the interest. See our Credit Card Interest Calculator to see what carrying a balance really costs.
Final word: the card itself is just a tool. What matters is whether you are spending your own money or the bank money, and whether you can pay it back. This is general information, not personalised financial advice.
🎯 Test Your Knowledge
Quiz on EFTPOS, Debit and Credit Cards (20 Questions)
Related guides
- Automatic Payments vs Direct Debits, a related guide in the same area.
- Community Services Card - Learning Center, a related guide in the same area.
- Credit Card Minimum Payments, a related guide in the same area.