Auditor-General Tsakani Maluleke says irregular expenditure is probably higher than the current estimated R50-billion.
Maluleke says this is because more than 100 auditees didn’t disclose their irregular expenditure.
She says there needs to be more decisive action to deal with the issue.
The Auditor-General is also concerned about the lack of consequences for irregular expenditure in government.
The outcomes of the 2019-2020 financial year released on Wednesday paint a bleak picture.