MasterCard vs Visa (and why MasterCard is better)

Our guide outlines how Mastercard and Visa use different exchange rates when you make a purchase overseas and the important differences between each card provider

Updated 5 April 2025

Summary

There's very little difference between MasterCard and Visa when it comes to interest rates, fees and interest-free days as the bank (or whoever provided the card) sets these terms; MasterCard or Visa simply process the payments you make.
But if you use your card on overseas purchases, either online or in stores when outside of New Zealand, what you will pay in NZD will vary depending on whether you use MasterCard or Visa. This is because, as per our extensive research, Visa offers worse FX rates than MasterCard in every currency we analysed.
This means that in almost all instances, your purchase will be more expensive if you use a Visa rather than a MasterCard on an overseas transaction. Bank currency conversion fees (1.85% to 2.60% on the transaction value) apply to the purchase as well, so to get the best deal you will need to select a bank that charges the lowest percentage fee.
This guide sets out the single significant difference between MasterCard and Visa, and why picking a MasterCard will most likely save you money if you spend overseas.
Important: Our research was conducted in 2018, but we continue to monitor the exchange rates between both providers. Based on consistent results, we believe that the best credit card for general spending, including overseas transactions, is a MasterCard.

Introduction

Go overseas and use your credit or debit card and you'll pay a foreign currency commission on top of the exchange rate on the day of your transaction. Banks charge different amounts for their transaction commissions, ranging from 1.85% to 2.60%.
The purpose of this guide is to demonstrate the difference in the foreign exchange (FX) rates used by MasterCard and Visa. You may think the card providers would have the same foreign exchange rate; our in-depth research between them proves otherwise.
We analysed a range of currencies throughout 2017 and 2018 to determine the best credit card to use for overseas purchases (i.e. online shopping) or to use overseas. Our research was based on each bank's FX commission fee and MasterCard and Visa's average daily exchange rates.

Why is this important?

We found the best credit cards could save cardholders as much as 3.50% on the purchase value when compared to ANZ, TSB, Westpac and Heartland bank's credit card selection. The 3.50% is a combination of the average MasterCard exchange rate saving (1% compared to Visa) and the currency conversion charge (0% to 2.60%) the bank charges.
A 1% difference between MasterCard and Visa does not sound like much, but get the wrong card and you could easily pay $100, $200 or even $300+ more in fees and commissions unnecessarily if you spend NZ$10,000 a year on your credit card on overseas purchases.

Our guide covers:

BEST CREDIT CARDS FOR
FOREIGN CURRENCY SPENDING

What’s the difference between MasterCard and Visa?

Other than the names, there really isn't a difference between either credit card provider. Both are accepted equally within New Zealand and all over the world. What you pay in fees, interest and repayment terms will vary between cards but this is based on the bank or lender you use (i.e. Westpac, QCard, Kiwibank etc).

Unlike American Express, which tends to be less accepted locally and globally, MasterCard and Visa charge retailers a lower commission and for this reason will be accepted as payment by any retailer who accepts credit cards.

How do Visa and MasterCard make money when I use my credit card?

MasterCard and Visa make money in a number of ways:

By charging a commission to the retailer each time a purchase is made, historically around 1.50%. This means if you make a $100 purchase, the retailer will pay $1.50 to either Visa or MasterCard depending on your card.
By charging overseas withdrawal fees which can be as high as NZ$10 if you need to advance money outside of New Zealand.
By making a margin on overseas spending by selling you foreign currency at a rate higher than the market price. The actual market exchange rate and the Visa and MasterCard exchange rates are very different. We outline this in detail below.

Know this: Interest charged for late payments is collected by your bank or credit card issuer (i.e. GEM Visa or Q MasterCard), not Visa or MasterCard.

Foreign Exchange Differences Revealed: MasterCard vs Visa

MasterCard vs Visa - MasterCard usually wins in all of the currencies we surveyed

We were aware from overseas publications that MasterCard's FX rates tended to beat Visa when it came to spending money overseas. But we didn't know if this was the case for popular currencies such as the USD and AUD, or all currencies.
To find out, we took the published wholesale exchange rates between October 2017 and October 2018 from the MasterCard and Visa websites.
We picked four dates a month and used a range of currencies New Zealanders use when they go overseas. The data we gathered provided us with enough information to compare.
The result was striking - MasterCard outperformed Visa in every currency.

BEST CREDIT CARDS FOR
FOREIGN CURRENCY SPENDING

How much better is the MasterCard rate than the Visa rate?

The charts below are proof that MasterCard gives better rates than Visa for every currency we analysed, but the difference does range and overall between all the currencies we looked at, it was around 1.17%. To make sense of our results, we've analysed differences between the Visa and MasterCard FX rates.

For the Australian Dollar (AUD), as the graph indicates, the MasterCard exchange rate (shown in red) was on average 0.55% better than the Visa exchange rate (shown in blue), which is the smallest average difference of all the currencies we surveyed.
This means you would be around $5.50 better off (i.e. pay less) with a MasterCard than a Visa on the same NZ$1,000 purchase in Australian Dollars.

For the British Pounds (GBP), as the graph indicates, the MasterCard exchange rate (shown in red) was on average 1.50% better than the Visa exchange rate (shown in blue).
This means you would be around $15 better off (i.e. pay less) with a MasterCard than a Visa on the same NZ$1,000 purchase in British Pounds.

For the US Dollar (USD), as the graph indicates, the MasterCard exchange rate (shown in red) was on average 0.77% better than the Visa exchange rate (shown in blue).
This means you would be around $7.70 better off (i.e. pay less) with a MasterCard than a Visa on the same NZ$1,000 purchase in US Dollars.

For the Euro (EUR), as the graph indicates, the MasterCard exchange rate (shown in red) was on average 1.42% better than the Visa exchange rate (shown in blue).
This means you would be around $14.20 better off (i.e. pay less) with a MasterCard than a Visa on the same NZ$1,000 purchase in Euros.

For the Japanese Yen (JPY), as the graph indicates, the MasterCard exchange rate (shown in red) was on average 1.42% better than the Visa exchange rate (shown in blue).
This means you would be around $14.20 better off (i.e. pay less) with a MasterCard than a Visa on the same NZ$1,000 purchase in Japanese Yen.

For the Thai Baht (THB), as the graph indicates, the MasterCard exchange rate (shown in red) was on average 1.17% better than the Visa exchange rate (shown in blue).
This means you would be around $11.17 better off (i.e. pay less) with a MasterCard than a Visa on the same NZ$1,000 purchase in Thai Baht.

For the Hong Kong Dollar (HKD), as the graph indicates, the MasterCard exchange rate (shown in red) was on average 0.82% better than the Visa exchange rate (shown in blue).
This means you would be around $8.20 better off (i.e. pay less) with a MasterCard than a Visa on the same NZ$1,000 purchase in Hong Kong Dollars.

For the Singaporean Dollar (SGD), as the graph indicates, the MasterCard exchange rate (shown in red) was on average 1.17% better than the Visa exchange rate (shown in blue).
This means you would be around $11.70 better off (i.e. pay less) with a MasterCard than a Visa on the same NZ$1,000 purchase in Singaporean Dollars.

For the Canadian Dollar (CAD), as the graph indicates, the MasterCard exchange rate (shown in red) was on average 1.34% better than the Visa exchange rate (shown in blue).
This means you would be around $13.40 better off (i.e. pay less) with a MasterCard than a Visa on the same NZ$1,000 purchase in Canadian Dollars.

The Mexican Peso (MXP) is the most volatile of the ten currencies we analysed over the course of the 12 months.
As the graph indicates, the MasterCard exchange rate (shown in red) was on average 1.50% better than the Visa exchange rate (shown in blue).
This means you would be around $15 better off (i.e. pay less) with a MasterCard than a Visa on the same NZ$1,000 purchase in Mexican Pesos.

Overall Results

For every currency, the results are fairly close. The axis on the graphs is enlarged to show the MasterCard advantage, which is the winner in all of the ten currencies we looked at.
On average, from all of the currencies we analysed, Visa's exchange rates were worse by an average of around 1.5% for the British Pound 1.40% for the Euro and around 0.50% for both the Australian and American dollars. We sampled a further six Asia-Pacific currencies, outlined in Table 2 below, with all reporting worse rates using Visa compared to MasterCard.
While we haven't checked FX rates every day and more than the ten currencies selected, we believe it is very likely that the data we obtained shows a pattern that would apply to the majority (if not all) of the FX rates offered by MasterCard and Visa. These findings are consistent with the 2017 reporting published by MSE UK.
In practice, the differences between MasterCard and Visa are small – you wouldn't notice the difference when spending $10 or $50 overseas. But the differences add up, and for single large purchases, a MasterCard is likely to offer a better rate when it comes to charging the foreign currency to a credit card.

BEST CREDIT CARDS FOR
FOREIGN CURRENCY SPENDING

Table 1 - How MasterCard Beats Visa in four Popular Currencies (Annual Average)

Exchange Rate	% Worse off using Visa (vs MasterCard)	The difference on a NZ$1,000 spend made in a foreign currency
NZD:AUD	-0.55%	~$5.50
NZD:GBP	-1.50%	~$15
NZD:USD	-0.77%	~$7.70
NZD:EUR	-1.42%	~$14

Our research confirmed that New Zealanders charging British Pounds and Euros to a Visa card paid around 1.5% and 1.42% more respectively when compared to MasterCard.
Charges to Australian Dollars and US Dollars had less of a difference, at around 0.55% and 0.77% respectively.
For a purchase made overseas that costs the equivalent of NZ$1,000, Visa cardholders will pay an average of $5.50 to $15 more than a MasterCard cardholder based on evidence of lower exchange rates. This additional cost is before bank conversion fees are charged.

Table 2 - MasterCard Beats Visa in six Asia/Pacific Currencies (Annual Average)

Exchange Rate	% Worse off using Visa (vs MasterCard)	The difference on a NZ$1,000 spend made in a foreign currency
NZD:JPY	-1.42%	~$14
NZD:THB	-1.17%	~$12
NZD:HKD	-0.82%	~$8.20
NZD:SGD	-1.17%	~$11.70
NZD:CAD	-1.340%	~$13.40
NZD: MXP	-1.50%	~$15

Again, our research confirmed that New Zealanders charging a number of Asian and Pacific currencies to a Visa card paid around 0.82% and 1.5% more respectively when compared to MasterCard.
For a purchase made overseas that costs the equivalent of NZ$1,000, Visa cardholders will pay an average of $8.20 to $15 more than a MasterCard cardholder based on evidence of lower exchange rates.

What does MasterCard having better FX rates than Visa mean in practice?

Quite simply, MasterCard will give you a better exchange rate for purchases made overseas than Visa.
But, your bank also applies a fee for 'currency conversion assessment' on top of the MasterCard or Visa rate.
This can range from 0% (Flight Centre Q Card) to 2.50% (TSB and Westpac credit cards and debit cards).

Our research proves MasterCard offers better foreign exchange rates than Visa over ten popular currencies used by New Zealanders

Our findings state the differences between MasterCard and Visa FX rates for ten popular currencies commonly used for online shopping and/or overseas travel.
The average 1.17% difference between the two credit card providers will only amount to around ~$12 per NZ$1,000 spent overseas, but per currency it can vary far more. As an example, using a Visa instead of a MasterCard and spending EUR 2,000 is likely to cost an extra NZD 45, excluding bank fees. It's not an insignificant amount and makes a valid reason for switching to MasterCard from Visa if you do spend in foreign currencies frequently.
See our Best Bank Currency Conversion guide for more details about the range of bank currency conversion fees.

Picking the Best Credit Card to Save Money

Based on our research, the best credit card is going to be a combination of:

A MasterCard with
0% (or as low as possible) bank/provider Foreign Currency commissions with
$0 (or low) Annual Fees with
Low Interest Rates and generous interest-free periods and/or
Rewards or Cashback

Best of all, such credit cards do exist - we outline our picks in the Best Buys section below. If you make purchases online, travel often or just want to know you are getting the best value for money, one of these cards will give you the best value on every $1 you spend.

Foreign Currency Conversions Charges Comparison - New Zealand Banks and Alternative Options

Payment Method	Foreign Currency Conversion Fee
Wise Debit Card	~0.49%
Flight Centre Mastercard	0.00%
Q Mastercard	1.40%
Kiwibank Credit Cards	1.85%
TSB Debit Card	1.90%
Westpac Debit and Credit Cards	1%
SBS Debit Card	2.00%
ASB Debit and Credit Cards	2.10%
Co-operative Bank Credit Card	1.90%
BNZ Debit and Credit Cards	2.25%
Kiwibank Debit Cards	2.50%
Co-operative Bank Debit Card	2.60%
Prezzy Card	3.50%
PayPal	4.50%

Fees correct of 22 March 2025, obtained from ANZ, ASB (credit card), ASB (debit card), Westpac, Kiwibank (debit card), Westpac (debit card), BNZ, SBS Bank (credit card), SBS Bank (debit card), Flight Centre Mastercard and the Co-operative Bank.

Best Credit and Debit Cards for Purchases in Foreign Currency

We have selected five cards below that are the best in their class, with a focus on foreign exchange fees, low fees and Airpoints dollars. We have excluded any Visa-issued card, such as the ANZ offering, given the inferior exchange rates in contrast to Mastercard.

Best Foreign Exchange Credit Card
Card: Flight Centre MasterCard
Annual fee: $50 (charged as $25 every 6 months)
International ATM withdrawal fee: $3
Foreign currency conversion fee: 0% on transaction value
Interest rate on purchases (if not repaid): 24.99% p.a.
Interest rate on cash advanced: 26.99% p.a.
Interest-free period: Up to 55 interest-free days
Minimum repayment: $10 or 3% (whichever is the greater)
Rewards: $1 for every NZ$100 spent can be used for flights and travel at any Flight Centre store.

Best Foreign Exchange Debit Card
Card: Wise Debit MasterCard
Annual fee: $0
International ATM withdrawal fee: Free (up to NZ$350/month, then 2% of transaction)
Foreign currency conversion fee: 0.35% and 2.85% in overseas currency conversion fees. For popular currencies such as AUD, GBP, USD and EUR, you'll pay around 0.50%

Are there any other differences between MasterCard and Visa?

For New Zealand-based transactions, you won't notice any difference between MasterCard and Visa – your card is issued in New Zealand dollars and as you spend in New Zealand dollars, exchange rates won't affect you.
Both MasterCard and Visa are accepted throughout New Zealand and worldwide by millions of retailers.
If a retailer accepts MasterCard, in almost all cases it will accept Visa, and vice versa. This is not the same for American Express, which has relatively less coverage in comparison.

Related Guides: