In a statement, the bank said it was using product data available from participating banks under the consumer data right to provide an easily understandable set of statistics.
"Due to dynamic market conditions, it's not always easy for consumers to compare the interest rates on different saving accounts," said 86 400 chief executive Robert Bell.
"This leads to apathy and a situation where too many Australians have their hard-earned savings netting them next-to-nothing in interest.
"Rates are arguably the most important consideration when selecting a savings account, but often the most confusing.
"We're removing the effort of comparing different options by showing how the savings rates of each of the majors compare with 86 400.
"This is just one way that we are helping Australians take control of their money, and means they can easily find the savings account that best suits their needs."
The bank said it was looking to build additional products based on similar data. It has also published APIs for its deposit and lending products, which are now available to developers.