How HECS Repayments Actually Work

A HECS/HELP debt behaves differently from most loans. There’s no interest in the usual sense, repayments are tied to what you earn rather than what you owe, and the order things happen in each year matters more than people realise.

Repayments come out of your income

Compulsory repayments have used marginal rates since 1 July 2025, subject to an overall limit of 10% of your total repayment income. Repayment income can include reportable super contributions and fringe benefits as well as taxable income.

In the highest band, the 10% applies to your whole repayment income, not just the amount above $186,050.

For example, $100,000 of repayment income falls in the 15-cent band and produces a $4,570.80 compulsory repayment before any limit for the remaining debt.

Your employer may withhold extra tax through the year, but the ATO calculates and credits the compulsory repayment when your tax return is assessed. Check the government repayment guidance for the distinction between repayments and payroll withholding.

The one-off 20% debt reduction

Eligible HELP debt balances outstanding on 1 June 2025 qualified for a one-off 20% reduction, applied automatically by the ATO. The 1 June date identified eligible balances, rather than when every account was updated. Processing began in November 2025, and the ATO advised that more complex cases could continue into early 2026. Check your current loan account balance before using a payoff calculator so the reduction is not counted twice. See Study Assist's debt-reduction update.

Indexation is applied first

Each year the balance is indexed to keep pace with inflation, and that happens before your compulsory repayment is credited. That’s why a well-timed voluntary payment before the indexation date can go further than the same payment made afterwards.

Voluntary payments are optional

You can make extra payments any time to clear the debt sooner, but whether that’s the best use of your money depends on your situation, and none of this is financial advice.

Scholarships and grants shrink the debt before it starts

The cheapest HECS debt is the one you never take on. Every scholarship, grant or fee waiver you receive covers study costs you would otherwise put on the loan, so the balance that gets indexed each year starts smaller. A cash stipend helps in much the same way: money that covers textbooks, equipment or rent is money you don’t have to borrow, and if a debt is already sitting there, it can go toward a voluntary payment instead.

What surprises most students is how little competition some of these awards attract. Universities, faculties, industry bodies, professional associations, unions and private trusts all offer them, and the narrower ones (a specific degree, a regional hometown, a particular employer or community group) can close with a handful of applicants or none at all. An award nobody applies for is not saved for you; it simply goes unawarded, or rolls over to a round you may never hear about.

That is why it is usually worth applying even when you sit just outside the stated criteria. Hard eligibility rules, such as citizenship or enrolment status, are worth respecting. Soft ones are not the same thing: a grade average a fraction below the mark, a “preference will be given to” line, or a field of study that only partly matches. Selection panels usually have room to interpret their own guidelines, and a thin applicant pool gives them a reason to use it. The realistic downside is an application that goes nowhere. The upside is a few thousand dollars that never reaches your balance and never gets indexed.

Check your university’s scholarship database each semester rather than once at enrolment, since new awards and later rounds open throughout the year.

To project when your debt clears under different repayment and indexation assumptions, try the HECS Payoff Calculator.