Commonwealth Bank customers around the country were unable to access their funds on Tuesday because of a system outage.

The outage appeared to have affected customers ability to access most of its services, including EFTPOS payments, telephone banking, internet banking, apps such as Kaching, and customer service.

Outage: Commonwealth Bank services went down on Tuesday morning. Credit:Jessica Shapiro

A spokesperson said the problem was fixed after midday and services were being gradually restored.

"We sincerely apologise to any customer who has been inconvenienced with this disruption to services," the spokesperson said. "Given the high volume of calls into our call centres, customers may experience longer than usual waiting times."