Thanks to a Guardian story based on a FoI request we now know that Treasury has modelled changes to HELP debt repayment times under Job-ready Graduates. They are six years too late to influence the original policy, but better that than never as JRG remains a live issue.

Treasury used much more sophisticated methods than my own recent analysis of arts graduate repayment prospects. However, Treasury does not use the new student debt repayment system introduced in 2025-26, and so under-estimates current repayment times. I will return to this, but Treasury has produced a helpful conceptual and empirical guide to what the Morrison government should have considered prior to Job-ready Graduates being proposed, and the Albanese government should think about when redesigning the system.

Debt and income data

Instead of just using debt levels based on three years of the relevant student contributions for each course, Treasury put into their model actual subjects, with data from the Department of Education included in PLIDA. So the model captures extra debts caused by double degrees, changing courses or failing and repeating subjects. It also captures lower debts of people who never complete a course.

My analysis used Australian citizen median income by single year of age, as recorded using ATO and DSS income linked to Census records. For years 1 to 10 after university Treasury used a model based on actual debtor income in PLIDA (which also has ATO and DSS data). These are critical years for repayment for most debtors, so this is important. Treasury’s model uses Census data to estimate repayments after 10 years.

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