HECS Voluntary Repayments Strategy Australia | When It Makes Sense
Short answer
HECS-HELP is indexed to CPI each year on 1 June — in recent years that has been around 3% to 7%. Making voluntary repayments before the indexation date reduces the balance that gets indexed. Whether that is the best use of your money depends on what else you could do with it: if you have higher-interest debt, investing opportunities, or a home deposit to save for, those may deliver better returns than avoiding CPI indexation.
The indexation math
CPI indexation is applied on 1 June each year to your remaining balance. At 4% indexation, a $30,000 debt grows by $1,200 in one year. A voluntary repayment of $10,000 before 1 June would save $400 in indexation that year. Over multiple years, the compounding effect adds up.
Opportunity cost
HECS is effectively a 0% real interest loan when CPI matches inflation. If you can earn returns above CPI (e.g., through shares or super contributions), your money may work harder elsewhere. But this involves risk — CPI savings are guaranteed, investment returns are not.
Threshold strategy
If your income is just above a repayment threshold, salary sacrificing into super can push your repayment income below the threshold — reducing your compulsory repayment rate. This is not about avoiding the debt, but about controlling the timing of payments.
Common mistakes
- Making a large voluntary repayment after 1 June — the indexation has already been applied. Time your payments before the June indexation date for maximum benefit.
- Prioritising HECS over credit card or personal loan debt — those charge real interest at 10% to 20%, far higher than CPI indexation.
- Assuming voluntary repayments are tax deductible — they are not, unlike salary-sacrificed super contributions.
- Depleting your emergency fund to pay off HECS — the indexation cost is relatively low compared to the risk of needing cash and having to borrow at high interest.
HECS repayment calculator
Project how long it will take to pay off your HECS debt at your current income.
Income threshold calculator
Find your current repayment rate and see how income changes affect compulsory payments.
Project the numbers
Voluntary repayments make sense in some situations — model yours first.
See how your HECS balance tracks over time with and without voluntary repayments, including indexation.
Project your repaymentsRelated guides
Frequently Asked Questions
- Are voluntary HECS repayments tax deductible?
- No. Voluntary HECS-HELP repayments are not tax deductible. They simply reduce your outstanding balance. The only financial benefit is avoiding future CPI indexation on the amount you repay early.
- Can I get a refund on voluntary HECS repayments?
- No. Once a voluntary repayment is made to the ATO, it cannot be refunded or reversed. Make sure you are comfortable with the amount before submitting payment.
- What are the current HECS repayment threshold rates?
- HECS repayment rates range from 1% to 10% of your repayment income, starting once you earn above the minimum threshold (around $54,435 for 2024-25). Rates increase in brackets as income rises, similar to income tax.