Customers of retail bank TSB have reported problems with payments not going through to their accounts.
Many took to social media to say they had not been paid their child benefit on Tuesday, while others said they had not received their salaries.
TSB apologised and said it was working on a fix and would get payments to people as soon as possible.
The problems started overnight, with a “small number of customers” affected, the bank said.
“We’re aware of an issue with some BACS payments not yet showing on customers’ accounts. We are working on fixing this and will provide an update as soon as possible,” it said in a statement.
Customers should contact the bank if they have had any problems, a spokesperson said, adding that customers who have gone overdrawn “will not be out of pocket” with any charges.
As soon as the problem is fixed, the payments should go through, the spokesperson added. TSB has about five million customers.
The Downdetector website, which monitors outages of online services, showed hundreds of complaints about TSB on Tuesday, with many concerning payments.
One user, Olivia, wrote: “At this point, I’m going to have to borrow money because I’m overdrawn without an overdraft and need to do a food shop.”
Many people would have been expecting their child benefit, which is due every four weeks on a Monday or Tuesday.
Writing on X, a user called Nicola told HMRC customer service that she had not received her payment.
An HMRC spokesperson said: “Some customers who bank with TSB have not received their Child Benefit today due to issues at the bank. All our systems are working and affected customers should contact TSB.”