HECS and other HELP debts were indexed by 2.8% on 1 June 2026 — the lowest rate since 2021 — after the government capped indexation at whichever is lower: the Consumer Price Index (CPI) or the Wage Price Index (WPI). Here's what it added to a typical balance and how the cap works.
Key facts
| What changed | Before | Now |
|---|---|---|
| 2026 indexation rate | — | 2.8% |
| Indexation applied | — | 1 June 2026 |
| Indexation cap | — | Lower of CPI or WPI (to March quarter) |
| Extra on a $30,000 balance | — | ≈ $840 |
| 2023 spike (for comparison) | 7.1% | Capped, backdated to 3.2% |
Why 2.8% and not the headline CPI figure
Since 1 June 2023, HELP indexation has been capped at the lower of CPI or WPI, both measured over the 12 months to the March quarter. The cap was legislated after CPI-based indexation hit 7.1% in June 2023, adding thousands of dollars to balances overnight — a graduate with $30,000 owing watched more than $2,000 land on their debt in a single day. Parliament later backdated the cap, retrospectively cutting that year's rate to 3.2% and crediting the difference back to affected accounts. In 2026, the wage measure came in lower than the price measure, so 2.8% was the rate applied on 1 June.
The practical effect of the cap is a guarantee: your student debt can never grow faster than average wages. That matters because HECS carries no commercial interest — indexation is the only mechanism by which the balance rises, and it now moves in step with the slower of the two economic measures rather than tracking inflation alone.
What 2.8% adds to a real balance
Indexation applies to whatever balance had remained unpaid for more than 11 months. A graduate with a $30,000 debt saw roughly $840 added on 1 June 2026; someone with $50,000 owing picked up around $1,400, while a smaller $20,000 balance grew by about $560. The adjustment happens automatically inside your ATO loan account — nothing changes on your payslip, and your employer is not notified.
Because compulsory repayments made through the year sit as a credit with the ATO until your tax return is assessed, they do not reduce the balance that gets indexed on 1 June. Only voluntary repayments, paid directly to the ATO, reduce the balance mid-year.
The 1 June deadline and voluntary repayment timing
If you made a voluntary repayment before 1 June, only the reduced balance was indexed. A payment made on or after 1 June does nothing for that year's indexation, since the calculation uses the balance as it stood that morning — a $5,000 voluntary payment on 31 May saved $140 of indexation at the 2.8% rate; the same payment on 2 June saved nothing until 2027. Whether paying early is worthwhile at all is a separate question: with indexation at 2.8%, money parked in a higher-interest savings account can earn more than early repayment saves, so the maths only favours voluntary payments in high-indexation years or when the cash has no better use.
How this interacts with the 20% debt cut
The one-off 20% reduction applied to balances as at 1 June 2025 is a separate measure to annual indexation. If your balance was cut in 2025, the 2.8% applied on 1 June 2026 was calculated on your already-reduced balance, not the pre-cut figure — so the cut also shrinks every future year's indexation in dollar terms. See our explainer on checking the 20% cut landed if you're not sure your account reflects it.
What this means for your pay
Indexation changes your total loan balance, not your compulsory repayment rate or your take-home pay directly — your employer still withholds STSL based on your income under the FY2026-27 thresholds, not your outstanding debt. What it does change is how long the debt takes to clear: a bigger balance means more years of repayments at the same withholding rate. To see how much of your pay currently goes toward compulsory HECS repayments, run your salary through our HECS-HELP calculator, and compare early repayment against super contributions with our extra super vs HECS repayment guide.