HECS-HELP Debt Indexation: Why Your Student Debt Keeps Growing
In 2023 Australian HECS-HELP debts were indexed by 7.1% — the highest in a generation. Understand how indexation works, when it's applied, and strategies to pay your debt off faster.
On 1 June 2023, the balances of every Australian with a HECS-HELP debt increased by 7.1% overnight — the highest indexation rate in over three decades. A $30,000 debt became $32,130 in a single day. For many graduates who had been diligently making repayments, their balance was higher than when they started paying.
How did this happen, and what can you do about it? This guide explains everything.
How HECS-HELP indexation works
HECS-HELP debt is not charged interest in the traditional sense, but it is indexed to inflation (the Consumer Price Index, or CPI) once a year. The indexation is applied on 1 June each year, based on the CPI for the March quarter compared to the previous year's March quarter.
In formula terms: new balance = old balance × (1 + March CPI change / 100)
In a normal year with 2–3% inflation, this is a modest adjustment. But in 2022–2023, Australia experienced the highest inflation in decades — driven by global supply chain disruptions and energy price shocks — and HECS debts grew accordingly.
Historical indexation rates
For context on how unusual recent years have been:
| Year (applied 1 June) | Indexation Rate | Impact on $30,000 debt |
|---|---|---|
| 2019 | 1.8% | +$540 |
| 2020 | 1.8% | +$540 |
| 2021 | 0.6% | +$180 |
| 2022 | 3.9% | +$1,170 |
| 2023 | 7.1% | +$2,130 |
| 2024 | 4.7% | +$1,410 |
| 2025 | ~2.4% (est.) | ~+$720 |
The cumulative effect of 2022–2024 is stark. Someone with a $30,000 debt at the start of 2022 who made no repayments would have seen their balance grow by approximately $5,238 through indexation alone over those three years.
Why can repayments fail to reduce the debt?
This is the situation many Australians found themselves in during 2023. The compulsory repayment rate at many income levels is lower than the indexation rate when inflation is high.
Example: At $75,000 income, the compulsory repayment rate is 3.5%, = $2,625/year. But on a $45,000 debt with 7.1% indexation, the debt grew by $3,195 on 1 June 2023. Net result: debt increased by $570 that year despite making $2,625 in repayments.
Use our HECS/HELP Repayment Calculator to model your own situation. You can adjust the indexation rate to see how different scenarios affect your payoff timeline.
Government response: 2024 indexation cap
In response to widespread public concern, the Albanese government legislated a change in 2024 that limited HECS indexation to whichever is lower — the wage price index or CPI. Wages grew at a slower pace than prices in 2023, so under the new rule the 2023 indexation would have been approximately 3.2% instead of 7.1%. The government also applied this retroactively to reduce the 2023 indexation that had already been applied.
While not eliminating indexation, this change significantly reduces the worst-case scenario in future high-inflation years.
Strategies to manage your HECS-HELP debt
1. Make voluntary repayments before 1 June
Any voluntary repayment you make before 1 June reduces the balance that indexation is applied to. If you have $5,000 in savings you could use, making a voluntary repayment on 31 May saves you 4–7% of that $5,000 in indexation — effectively a guaranteed return equal to the indexation rate.
2. Compare to your other debts
With HECS indexation now capped at wage price index (typically 3–4%), and credit card rates at 20%+ and personal loans at 8–15%, HECS debt is almost certainly your cheapest debt. Prioritise paying off higher-rate debts first.
3. Consider the home loan impact
Your HECS repayment is treated as a reduction in net income by mortgage lenders. If you are planning to apply for a home loan, reducing or eliminating your HECS balance beforehand can increase your borrowing capacity by $50,000–$100,000 depending on income. This may justify accelerating repayments even if the indexation rate is low.
4. Know your repayment threshold
For FY 2025–26, no compulsory repayment is due if your income is below $54,435. If you are studying, taking a career break, or earning below this threshold, you are not legally required to make compulsory repayments — though voluntary ones can still be made.
See the full repayment band table and calculate your exact repayment using our HECS/HELP Calculator.
Frequently asked questions
When is HECS-HELP debt indexed each year?
HECS-HELP debt is indexed on 1 June each year. The indexation rate is based on the March quarter CPI (Consumer Price Index) figure published by the ABS, compared to the previous March quarter.
Can I avoid HECS-HELP indexation by making a voluntary repayment before 1 June?
Yes — voluntary repayments made before 1 June reduce the balance that indexation is applied to. If you make a $5,000 voluntary repayment on 31 May, that $5,000 is not subject to the 1 June indexation. However, as of 2022, the government removed the 5% bonus for voluntary repayments, so there is no longer an additional incentive beyond avoiding indexation on the amount repaid.
Is HECS-HELP debt interest-free?
HECS-HELP is often described as interest-free, but this is not entirely accurate. While no interest is charged, the debt is indexed annually to CPI inflation. In low-inflation years (1–2%), this is effectively very cheap debt. In high-inflation years (like 2023 at 7.1%), the indexation can significantly increase your balance — effectively acting like interest.
Should I pay off my HECS debt early?
It depends. With recent indexation rates above 4%, paying off HECS debt early makes more financial sense than historically. Compare the indexation rate to after-tax returns on savings or investments. If you can earn more after-tax than the indexation rate, invest instead. If your debt is small and indexation is high, paying it off provides a guaranteed 'return' equal to the indexation rate.
Does HECS-HELP debt affect my credit score in Australia?
No — HECS-HELP debt is not a consumer debt and does not appear on your credit report. However, it does affect your borrowing capacity for a home loan, as lenders include compulsory repayments in their serviceability calculations as a reduction in your net income.
Indexation rates and thresholds referenced in this article are based on ATO and ABS published data. The 2025 indexation rate is an estimate based on CPI data available at time of writing. This article is for general information only and does not constitute financial or tax advice.