Why It Might Not Be Best to Pay Off Your HECS/HELP Debt Early

How HELP Debt Actually Works

• Income-contingent: You only make compulsory repayments once your taxable income is above the threshold.
• Indexed, not interest-bearing: HELP is indexed by CPI to preserve real value, rather than charging commercial interest.
• Collected via tax system: Repayments are generally withheld through payroll and reconciled at tax time.

That structure makes HELP very different from high-interest personal debt or credit cards. If you have expensive non-deductible debt, investing or reducing that debt first is often financially stronger than rushing to clear HELP.

When Paying HELP Early Can Make Sense

• You are about to clear it anyway: A small prepayment before indexation can reduce the balance that gets indexed.
• You want certainty: Some people prefer removing admin complexity and tax-time surprises.
• You have no higher-priority debt: If expensive debt is already controlled and buffer is healthy, voluntary HELP reduction may be reasonable.

Indexation Prepayment Hack

If you know your compulsory repayment this financial year will almost clear your HELP balance, consider a voluntary prepayment before indexation is applied. This can reduce indexation on the remaining balance.

Use your ATO records and professional advice to confirm timing and amount, because exact outcomes depend on your account balance and lodgement timing.

HELP Repayment Check Calculator

Estimate your compulsory HELP repayment from annual income, then compare it with what your payslips have withheld so far to spot potential shortfalls. The calculator automatically uses the current month to estimate how much of the financial year has elapsed.

HELP Indexation vs Investing Over the Past Decade

One reason many people do not rush to clear HELP is that the debt has usually grown at low single-digit indexation rates, while diversified share investing has historically targeted much higher long-run returns, even though those returns come with more volatility.

Recent official HELP indexation outcomes have been relatively modest compared with growth assets: 1.8% in 2020, 0.6% in 2021, 3.9% in 2022, then revised rates of 3.2% in 2023, 4.0% in 2024 and 3.2% in 2025 under the newer lower-of-CPI-or-WPI approach. Over the broader past decade, HELP indexation has generally sat in the low single digits, while the S&P/ASX 200 has commonly been discussed as a high-single-digit long-term total return market rather than a 2%–4% market.

Simple example: if you had $20,000 and your choice was to voluntarily reduce HELP or leave the HELP balance in place and invest the $20,000 instead, a rough 10-year comparison can be useful. At an average HELP indexation rate of 2.4% a year, that $20,000 debt grows to about $25,369. At an 8% investment return, that same $20,000 grows to about $43,178. That is a gap of roughly $17,809 before tax and volatility. The point is not that shares win every year; it is that low-rate policy debt is often less urgent than building assets that can compound faster.

What to Do If Payroll Is Under-Withholding

• Set aside the expected shortfall in a dedicated savings bucket.
• Re-check quarterly if your income changes due to bonus, overtime, or second jobs.

Related Guides

• Debt Repayment Strategies for Property Investors
• Extra Mortgage vs Investing
• Property Emergency Fund