A statement from CBA on Monday said Slyp's digital receipt application could be embedded into existing banking apps. This would make it easier to manage returns, warranties and financial management.
All the four big Australian banks now have a minority stake in Slyp, following the CBA arrangement, a first for the industry.
CBA's group executive Retail Banking Services, Angus Sullivan, said: “We are thrilled to partner with the team at Slyp. Their technology provides an intuitive solution to an everyday problem for our seven million digitally active customers.
Slyp co-founder and chief executive Paul Weingarth said: "This latest partnership with CommBank is a major breakthrough for the Slyp network. To deliver a truly ubiquitous industry standard of digital receipts, we knew early on that we would need to partner with the banks.
"Now, with their backing we are in a strong position to push towards eliminating paper receipts and provide retailers and banks with a new way to delight and engage their customers post-payment.”