Monzo runs customer payments on its backup bank during a four-hour outage
A platform fault on 19 August 2026 delayed Monzo payments for roughly four hours. The bank switched customers onto Monzo Stand-in, its separate backup platform, to keep card payments and transfers running.
What changed
A platform fault on 19 August 2026 delayed Monzo payments for roughly four hours. The bank switched customers onto Monzo Stand-in, its separate backup platform, to keep card payments and transfers running.
What changed
Monzo's status page opened an incident at 11:55 UTC reporting delays in processing payments. By 12:38 UTC the delays were unresolved and the bank's phone lines were also failing to connect. At 13:12 UTC Monzo confirmed it had activated Monzo Stand-in, the independent backup bank it maintains on separate infrastructure from its primary platform, so that customers could continue making card payments, withdrawing cash, freezing cards, and sending and receiving bank transfers while a fix was rolled out. The incident was marked resolved at 15:40 UTC, and no further incidents were logged in the days that followed. The episode is a live demonstration of a stand-in capability of the kind UK operational-resilience supervision expects of a deposit-taker.
What merchants must do
Merchants and platforms that take inbound bank transfers from UK consumers should treat delayed settlement notification, rather than failure, as the likely symptom of an event like this, and avoid cancelling orders on a missing-payment signal alone during a publicised issuer outage.