The Fine Print Australia · PUBLISHED 24 JUN 2026 · VERIFIED 24 JUN 2026 · AU EDITION

$1,400 Gone: How HECS HELP Debt Hits Your Tax Return

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If you earned $70,000 in 2024–25 and didn’t realise you’d crossed the HECS/HELP threshold, your entire expected tax refund could disappear into a $1,400 compulsory repayment before you see a cent, because repayments are taken from your tax assessment, not as a separate bill.

The number that matters

The minimum HECS/HELP repayment threshold is $54,435 in the 2024–25 year, and jumps to $67,000 in 2025–26, with repayments taken at rates up to 10% of your income once you lodge your tax return.

How it quietly costs you

Mechanism: HECS/HELP repayments are hidden inside your tax assessment and quietly eat your refund

• HECS/HELP debt is not paid like a normal loan; it is repaid through your tax return once your “repayment income” passes the annual threshold.
• For 2024–25, the minimum repayment income threshold is $54,435; if you earn more than this, the ATO automatically adds a compulsory repayment to your tax assessment.
• Repayment rates are progressive, ranging from 1% to 10% of your repayment income depending on your bracket.
• Employers withhold extra PAYG tax if you tick that you have a HECS/HELP debt, but this isn’t kept separate; it just increases total PAYG and is only matched against your HECS/HELP liability after you lodge.
• The ATO does not ask you to enter your HECS/HELP balance on the tax return; it matches your loan from its records and adds the repayment on your notice of assessment automatically.

Impact on your refund or tax bill

• A tax agent site notes directly: HECS repayments reduce the amount of your tax refund, because the compulsory repayment is subtracted from any refund you would otherwise receive.
• Example (2024–25 thresholds; illustrative tax and Medicare only):
• Income: $70,000 (above $54,435 threshold).
• Repayment rate at this level is about 2% of repayment income (using current progressive schedule in that band).
• Compulsory repayment: roughly $1,400 (2% × $70,000).
• If your PAYG withholding exactly covered your normal income tax and Medicare levy, that $1,400 would turn what you expected as a refund into a $1,400 payable, or a $1,400 smaller refund.
• Where employers under‑withhold (e.g. did not know you had HECS/HELP or you have multiple jobs), the ATO still applies the compulsory repayment, leaving you with an unexpected tax bill at assessment time.

Old vs better (how much is at stake)

• “Old” behaviour: not ticking HECS/HELP with each employer or not estimating your end‑of‑year income. This can mean hundreds to several thousand dollars of surprise tax payable because no extra tax was withheld during the year.
• “Better” behaviour: correctly declaring a HECS/HELP debt to all employers and, if you have multiple jobs, asking at least one to withhold extra PAYG based on your total expected income so the repayment is spread through the year.
• Tax practitioners highlight that multiple jobs, salary sacrifice, and fringe benefits often cause under‑withholding, which means the HECS/HELP component hits as a lump sum at tax time rather than being smoothed through pay.

The second, compounding trap

Mechanism: Indexation and “repayment income” rules mean your HECS/HELP grows faster than you expect if you only just meet compulsory repayments

• Your HECS/HELP balance is indexed to inflation every 1 June, which increases the debt before your compulsory repayment from the previous year is applied.
• During the high‑inflation year 2022–23, the indexation rate was 7.1%, meaning many people saw their debt jump by thousands of dollars in a single year.
• Importantly, that 7.1% indexation was applied to the loan balance without considering any amounts withheld during the year for HECS/HELP; PAYG withheld is only applied when the tax return is processed after 30 June.
• HECS/HELP compulsory repayments are based on repayment income, which is taxable income plus:
• Total net investment losses (including rental losses)
• Reportable fringe benefits
• Reportable super contributions (e.g. salary‑sacrifice super)
• Some exempt foreign employment income
• This means strategies like salary sacrificing into super, or having negatively geared property, can increase your HECS/HELP repayment even if they reduce your taxable income.

Long‑run dollar impact

• Say you have a $30,000 HECS/HELP balance. With a 7.1% indexation, your debt increases by $2,130 on 1 June if you have not cleared it before then.
• If your compulsory repayment for that year is 2% of a $70,000 income = $1,400, that doesn’t even cover the indexation, so your debt grows by about $730 despite making compulsory repayments.
• Over 5 years of similar conditions (debt around $30k, indexation averaging say 4%–5%, and repayments roughly matching indexation rather than exceeding it), that can leave you several thousand dollars worse off than if you had reduced the balance below about $15,000–$20,000 earlier, where indexation in dollar terms is much smaller.
• Tax practitioners specifically warn that large indexation events like 7.1% in 2022–23 have “intensified financial pressure” because many people’s repayments “may not adequately cover the indexed amount”.

Behavioural trap

• Many borrowers believe “it comes out of my pay anyway” and never look at the loan, so they:
• Do not realise that indexation is applied before their annual repayment is credited.
• Miss the chance to make targeted voluntary repayments just before 1 June to shrink the balance and minimise the indexation hit.
• Because HECS/HELP doesn’t affect your credit score and is collected via the tax system, it feels “out of sight”, which hides the compound effect of repeated indexation on a large balance.

What this looks like in practice

Persona

• Name: Sarah
• Age: 29
• Job: Marketing coordinator in Melbourne
• Income (2024–25): $72,000 salary
• HECS/HELP balance: $32,000
• Account type: HECS‑HELP loan (under the Higher Education Loan Program)
• Years to retirement: roughly 38
• Situation: First year earning above $70k, two casual side jobs, salary‑sacrifices $3,000 to super, and has a small negatively geared investment property.

Discovery 1 — Her “tax return surprise” is mostly HECS/HELP

• Sarah expects a $1,000 refund based on an online tax calculator and what friends told her.
• When she lodges, her notice of assessment shows only a $50 refund because a compulsory HECS/HELP repayment of about $1,440 (2% of $72,000) has been added to her assessment.
• She discovers that the entire $950 difference between her expected and actual refund is effectively her HECS/HELP repayment embedded in the tax assessment, not “extra tax”.

Discovery 2 — Her “repayment income” is thousands higher than her taxable income

• On her notice of assessment, Sarah sees that her repayment income is $78,000, even though her taxable income is $72,000.
• She learns this is because repayment income adds back $3,000 salary‑sacrifice super, plus $3,000 net rental loss from her investment property—both are included for HECS/HELP calculations.
• Compared with her assumption that HECS/HELP is based only on taxable income, this extra $6,000 pushes her effectively into a higher effective repayment than she expected, costing her an extra $60–$120 a year (1–2% of the added amount) in compulsory repayments at the margin.

Discovery 3 — A well‑timed voluntary payment could save her hundreds in indexation

• Sarah checks her loan balance via myGov in May and sees a projected indexation of about 4% (if inflation moderates from the 7.1% spike).
• On a $32,000 balance, 4% indexation would add $1,280 on 1 June.
• If she makes a $5,000 voluntary repayment in May (before 1 June), indexation applies to $27,000 instead of $32,000, adding $1,080 instead of $1,280—$200 saved in that year alone.
• She realises that repeating this once or twice—timing voluntary repayments before 1 June—could save hundreds of dollars over a few years, compared with doing nothing and letting indexation compound on a larger balance.

The full cost of doing nothing

Headline number: For someone like Sarah, combining under‑withholding “refund shock” with indexation on a large balance can easily cost around $10,000–$15,000 over her working life in higher lifetime repayments and foregone refunds, compared with managing thresholds, timing, and voluntary repayments more actively.

Modelling basis (illustrative, grounded in published settings):

• Starting HECS/HELP balance: $32,000.
• Income path: from $72,000 at age 29, growing moderately over time; always above the applicable threshold.
• Repayment settings:
• 2024–25 threshold $54,435; repayments from 1% to 10% of repayment income based on ATO schedule.
• 2025–26 threshold $67,000, with repayments only on income above $67,000 and higher marginal rates up to 10%.
• Scenario A (passive):
• Never checks loan.
• No voluntary repayments.
• Occasional under‑withholding due to multiple jobs and salary sacrifice, leading to surprise $800–$1,500 tax bills every few years when compulsory repayments exceed PAYG withheld.
• Indexation averages 3–4% per year over the next decade; balance remains above $20,000 for much longer, so cumulative indexation is several thousand dollars.
• Scenario B (active):
• Ensures employers withhold appropriately; spreads compulsory repayment through pay, reducing large year‑end bills.
• Makes two $5,000 voluntary repayments timed before 1 June in early career.
• This brings balance under $15,000 much sooner, cutting annual indexation from hundreds to tens of dollars.

Over 15–20 years, the difference between:

• higher cumulative indexation on a larger balance, plus
• repeated years of under‑withholding surprise bills (where Sarah must divert savings to the ATO instead of investing),

easily builds to five‑figure impact on her net position compared with an engaged, optimised strategy—particularly once you factor in the missed investment growth on the money used to plug unexpected tax debts.

What to do about it

1. Check your HECS/HELP balance and indexation before 1 June

1. Action: Log in and confirm your current HECS/HELP balance and when indexation will next apply.
2. Tool/portal: myGov → ATO Online Services → Loan accounts (shows your HELP/HECS account, current balance and past indexation).
3. Steps:

• Log in to myGov and link/enter the ATO service.
• Navigate to “Loan accounts” and select your HELP or HECS‑HELP account.
• Note the current balance, the last indexation rate applied (e.g. the recent 7.1% spike), and the date indexation is applied (1 June each year).

4. What “good” looks like:

• You know your exact balance and can see how much indexation added last year.
• If your balance is over $20,000 and you’re not planning to use that cash immediately, it’s worth considering whether a pre‑1‑June voluntary repayment could reduce next year’s indexation by hundreds of dollars, especially in higher inflation years.

2. Estimate your compulsory repayment so your refund isn’t a shock

1. Action: Work out your likely compulsory HECS/HELP repayment before you lodge your tax return.
2. Tool/portal:

• ATO tax rates and study and training support loan thresholds page (shows the 2024–25 threshold of $54,435 and the full rate schedule; 2025–26 threshold of $67,000 and new marginal rules).

3. Steps:

• Find your expected repayment income: start with taxable income, then add back net investment losses, reportable fringe benefits, reportable super contributions, and relevant foreign employment income.
• Check the ATO’s HELP repayment table for your income year to find your repayment rate (e.g. 1%, 2%, … up to 10%).
• Multiply that rate by your repayment income (or the amount above $67,000 from 2025–26 onwards) to estimate the dollar repayment.

4. What “good” looks like:

• You have a specific dollar figure in mind (e.g. “my HECS/HELP repayment will be about $1,500”).
• You’re not surprised when your refund is smaller or a small bill appears, because you already built this into your expectations and cash‑flow planning.

3. Fix your PAYG withholding so HECS/HELP doesn’t create a lump‑sum bill

1. Action: Update your Tax file number declaration / withholding declaration with your employer(s) so enough tax is withheld for HECS/HELP.
2. Tool/portal:

• ATO forms: “Tax file number declaration” and “Withholding declaration” (your payroll or HR can supply these; they include the question about having a study and training support loan).

3. Steps:

• For each employer, ensure you’ve answered “Yes” to having a study and training support loan (HELP/HECS) so they withhold the correct extra tax.
• If you have multiple jobs or large reportable benefits, ask one employer to withhold an additional fixed amount per pay to cover the extra HECS/HELP repayment you calculated in Move 2.
• Review your first few payslips after the change to confirm the increased PAYG withholding and keep a note of the annualised total.

4. What “good” looks like:

• When you lodge your tax return, total PAYG withheld roughly equals your income tax + Medicare levy + HECS/HELP repayment, so you get a small, expected refund or a very small payable—not a surprise $1,000+ bill driven by HECS/HELP under‑withholding.

A myth worth clearing up

Myth: “HECS/HELP just comes out of your pay, so my tax return and refund are basically unaffected.”

Fact: HECS/HELP is calculated and collected through your tax return, not as a separate payroll deduction, and the ATO adds a compulsory repayment of 1–10% of your repayment income to your tax assessment if you earn above the threshold, which directly reduces your refund or creates a tax bill. This repayment is based on repayment income (which can be higher than taxable income due to things like salary sacrifice and fringe benefits), and indexation is applied each 1 June before your annual repayment is credited, so “set and forget” can cost you more over time.

Sources

• https://www.studyassist.gov.au/managing-and-repaying-your-loan/loan-repayments
• https://www.ato.gov.au/individuals-and-families/study-and-training-support-loans/compulsory-repayments

Researched 2026-06-24.

Corrections & disclosure: an AI-assisted, human-reviewed guide. Every figure is dated and sourced above. Spot something out of date or wrong? Tell us and we’ll correct it — corrections are noted here and in the video description.