At the moment, STP rules require employers with 20 or more workers to send superannuation and income tax directly to the ATO each time payments are made.
From 1 July, that will extend to companies which have 19 employees or less as well and to submit STP reports directly, employers would need access to the payroll component of the accounting software they use.
In a statement, Reckon said it had created the app along with user-interface, design and development company Thinkmill, and it was aimed primarily at the 450,000 micro-businesses which have between one and four employees.
The company said it had also built a new front-end platform that would support mobile-first accounting solutions which were to launch soon. "Reckon single touch payroll app users can easily integrate their data into Reckon’s wider accounting software functions, such as invoicing and point of sale, if they choose to subscribe to those services," it added.
Reckon chief executive Sam Allert said: "Single touch payroll is widely considered as the biggest change for employers since the introduction of GST almost 20 years ago.
“Many micro-businesses are still doing ‘shoebox accounting’, while overlooking payroll software that can save time and money. This might be because they’re reluctant to digitise their operations due to limited capabilities, Internet access, or cost.
"Small business owners have enough to worry about without the distraction of admin and red tape, so we designed a simple, free and STP-compliant app that can run on the devices that most people have in their pockets."