The launch follows a collaboration with Harvard University’s STAR Lab to explore how the timing of large expenses relative to income can improve a person’s cash flow and make it easier to achieve better financial outcomes.

“People’s financial lives have so many moving parts,” said John Beshears, a professor at Harvard Business School and a member of the STAR Lab. “Income arrives on one schedule, and each major recurring expense, such as a home loan payment, often arrives on its own separate schedule. When these schedules are out of sync, many customers have difficulty planning their spending. Luckily, there are ways to help customers avoid this source of stress.”

CBA’s Executive General Manager for Home Buying, Dr Michael Bauman, said: “For many customers, home loan repayments are their biggest regular expense and traditionally repayments are monthly with the repayment date determined by the settlement date of a property.”

Last year more than 8 in 10 customers were paid weekly or fortnightly, however for the majority of home loan customers their repayments are monthly.

“The new feature in the CommBank app is designed to give customers control to be able to align their home loan repayments to when and how often they are paid. Emerging research suggests seemingly small changes like aligning a customers’ repayment day with their pay day can make it easier for them to manage their finances.”

Dr Bauman said customers are increasingly engaging with their bank via digital tools and seeking out ways of completing tasks digitally.

“The digital self-serve feature provides customers with another option to filling out a form or having to speak to their CommBank lender or broker. It adds to our growing suite of powerful digital tools that provide unparalleled support and empower customers to self-serve throughout the entire home buying and ownership journey,” Dr Bauman said.

Going forward, the bank will nudge customers via alerts in the CommBank app to let them know about the new feature and how it could help them better manage their monthly finances.

The new feature complements CBA’s Home Buying Hub4, already located in the CommBank app.