These measures will also apply to SMSF annual returns, the ATO confirmed yesterday.

These arrangements will be put in place automatically, meaning tax practitioners do not need to contact the ATO.

This announcement comes as the ATO’s key portals, including the tax agent and BAS agent portal, experienced further periods of downtime and degraded performance in the first week of July.

Further disruption is on the horizon for professionals, as the ATO grapples with the scope of their digital restoration and improvement work.

“The issues we have encountered with our systems over the past few weeks highlight the sheer size, scale and complexity of the ATO’s IT environment. We continue to examine the triggers and cause of these issues and this analysis is informing the ongoing remediation work we are undertaking,” a statement from the ATO said.

“While we are doing everything we can to minimise the risk of being exposed to systems incidents in the future and the resulting impact these incidents have on our stakeholders, we do anticipate there may be some further minimal disruption to our services as we continue work to implement the IT improvements identified in the report.”