The Westpac Low Rate Mastercard offers two things that matter most in a safety-net credit card: no annual fee and a low interest rate. Here’s who it suits and how it compares.
The Westpac Low Rate Mastercard ($0 fee, 13.9% p.a.) is a solid no-frills card for Westpac customers who sometimes carry a balance. No rewards, no annual fee, and a rate well below the standard 20.95%. The BNZ Low Rate Mastercard (13.45%) has a slightly lower rate at also $0 fee — but if you bank with Westpac, this is your best option.
Westpac Low Rate Mastercard — Key Facts
| Feature | Detail |
|---|---|
| Annual fee | $0 |
| Interest rate | 13.9% p.a. |
| Interest-free period | Up to 55 days |
| Card network | Mastercard |
| Rewards | None |
| Foreign transaction fee | ~2.25% |
| Contactless / Apple Pay | Yes |
The Value Proposition
Zero annual fee combined with a rate 7 percentage points below the standard 20.95% — on a $2,000 balance, you save $140/year in interest compared to a standard card while paying nothing for the privilege.
| Balance | Standard card (20.95%) | Westpac Low Rate (13.9%) | Annual saving |
|---|---|---|---|
| $1,000 | $209.50 | $139 | $70.50 |
| $2,000 | $419 | $278 | $141 |
| $3,000 | $628.50 | $417 | $211.50 |
And because the annual fee is $0, every dollar saved in interest is a genuine gain.
Why Mastercard (Not Visa)?
Westpac issues this card on the Mastercard network rather than Visa. In NZ and internationally, both networks are widely accepted — the practical difference is minimal. Mastercard is accepted at essentially all places that accept Visa.
One minor note: some international merchants or services specify Visa only — this is rare but worth knowing if you travel extensively. In that case, carrying a backup Visa card (like the Kiwibank Zero Visa) ensures full coverage.
Westpac Low Rate Mastercard vs Competitors
| Card | Annual fee | Interest rate | Network |
|---|---|---|---|
| Westpac Low Rate Mastercard | $0 | 13.9% | Mastercard |
| BNZ Low Rate Mastercard | $0 | 13.45% | Mastercard |
| Kiwibank Low Rate Visa | $0 | 13.9% | Visa |
| ANZ Low Visa | $30 | 12.9% | Visa |
| ASB Visa Light | Low | 12.9% | Visa |
| Kiwibank Zero Visa | $0 | 25.99% | Visa |
Key comparison — BNZ Low Rate Mastercard (13.45%) vs Westpac Low Rate Mastercard (13.9%):
On a $2,000 balance held for a year, the BNZ rate saves ~$9 more. Both are $0 annual fee. If you bank with Westpac, the $9/year difference is unlikely to be worth switching banks. If you’re choosing without loyalty to either bank, the BNZ card has a marginally lower rate.
Who Is This Card For?
Good fit:
- Westpac customers who want a safety net for months they can’t pay in full
- Those who occasionally carry a balance and want to minimise interest cost
- Westpac customers who want no rewards complexity — just a simple low-cost card
- As a backup card alongside a higher-rate rewards card (use the rewards card for spending, pay in full; switch to Low Rate card when needed)
Not a good fit:
- Always pay in full? → The Kiwibank Zero Visa ($0 fee, no foreign transaction fee) is better for travellers; any no-fee card works for domestic use
- Want rewards? → Westpac hotpoints Mastercard earns hotpoints (but at low value); consider an Airpoints card instead
- Heavy international traveller → the 2.25% foreign fee applies; use a Kiwibank Zero Visa for overseas purchases
Using the Westpac Low Rate Mastercard as a Backup Card
A popular strategy:
- Use an Airpoints or cashback card for all everyday spending — earn rewards
- Pay the rewards card in full monthly
- Keep the Westpac Low Rate Mastercard in reserve
- If you have a month where you can’t pay in full, switch the relevant spending to the Low Rate card
Combined annual cost: $0 (assuming the rewards card pays for itself through rewards exceeding its fee).
Verdict
The Westpac Low Rate Mastercard is exactly what it says — a no-fee, low-rate card with no frills. It’s the right choice for Westpac customers who want financial safety without annual cost. If you never carry a balance, you don’t need this card. If you sometimes do, it’s a sensible tool to have. The BNZ Low Rate Mastercard (13.45%) saves marginally more on interest — but for Westpac customers, the convenience of managing everything at one bank is worth the small difference.
Next Steps
- Best low interest credit cards NZ — full low-rate card comparison
- Best no annual fee cards NZ — all $0 fee options compared
- How credit card interest works NZ — understand what the 13.9% rate means in practice
- Westpac hotpoints review — if you want rewards at Westpac