Mastercard card payments failed across Australian retail on Saturday afternoon. The first official acknowledgement was logged at 3.03pm AEST and the network was declared back to normal at 4.10pm, putting the disruption at a little over an hour on the public record.
Tyro, which supplies card terminals to Australian merchants, posted the first notice. Its status page told businesses to ask customers to try a physical Mastercard rather than a digital wallet, or to use another payment method entirely.
Commonwealth Bank named the source an hour later. At 4pm AEST its service updates page attributed the declines to a global Mastercard issue and said card payments were being restored. Customers still being knocked back were told to insert the card and select savings, which sends the transaction through eftpos instead of Mastercard.
That workaround is the part worth holding onto. The domestic eftpos network kept running through the whole window, on the same terminals that were rejecting Mastercard.
Commonwealth Bank said its ATMs and all its other services stayed available. Westpac's merchant status page reported every merchant system operational. The banks were not down. The card scheme they carry was.
Tyro closed the incident at 4.10pm AEST. Transaction processing had returned to normal, it said, though recent payments might take longer than usual to appear across its portal, app and terminals. Commonwealth Bank's notice still read as restoration in progress at that point rather than finished.
No estimated repair time was published at any stage. Neither company put a figure on when full service would return, and neither said what had failed inside Mastercard.
Tyro's advice did draw one line, between the physical card and the digital wallet, telling merchants to ask customers for the plastic. It did not say why one worked better than the other.
The outage hit a retail sector already operating under new cash rules. Since 1 January, businesses selling groceries and fuel have had to accept cash for in-person purchases under $500 under a Treasury mandate, with businesses under $10 million in annual turnover exempt unless they trade under a larger retailer's brand. The mandate runs three years before it is reviewed.
For a merchant, an hour of declined Mastercards on a Saturday afternoon is a queue and an apology. The question is what caused it. Mastercard has not said, and until it does no business has any basis to judge whether Saturday was a one-off or something to plan around.
