If you are working two jobs, it is easy to forget or overlook the paperwork for your second employer. However, failing to disclose your HECS-HELP (Study and Training Support Loan) debt can have a direct impact on your bank account at the end of the financial year.

It is important to understand that your employer does not “pay” your HECS debt for you—they simply withhold extra tax from your pay to ensure you have enough money set aside to cover your compulsory annual repayment. If you don’t tell your second employer, here is what actually happens.

1. You Will Likely Face a Large Tax Bill

The most significant consequence is financial. Your employers operate in complete isolation; they do not share information with each other about your total earnings.

• The “Under-Withholding” Effect: If you don’t tick the “I have a study loan” box, your second employer will withhold tax at the standard rate. They won’t deduct the extra amount needed to cover your student debt.
• The ATO Reconciliation: When you lodge your tax return, the Australian Taxation Office (ATO) calculates your total Repayment Income (RI) from all sources. If your combined income from both jobs pushes you above the repayment threshold, the ATO will calculate your total compulsory repayment for the year.
• The Shortfall: The ATO then compares your total compulsory repayment to the extra tax your employers actually withheld. Because your second employer didn’t withhold the extra HELP amount, you will likely have a “shortfall.” You will be required to pay this difference immediately as part of your tax assessment.

2. You Are Responsible for the Shortfall

It is a common misconception that your employer is at fault if the tax withheld is insufficient. If you chose not to disclose your debt on your Tax File Number (TFN) Declaration form, the responsibility rests entirely with you. You cannot ask your employer to retroactively adjust your tax; you will simply be responsible for paying the outstanding balance yourself when your tax return is processed.

3. Your Loan Balance Won’t Be “Paid Off” Early

Some people mistakenly believe that by not disclosing their debt, they are somehow “saving” money. In reality, your compulsory repayment is calculated based on your total annual income regardless of what your employers withhold. By not disclosing your debt, you aren’t paying less HECS overall; you are just delaying the payment until the end of the year.

How to Fix the Situation

If you’ve already started a second job and forgot to declare your HECS debt, don’t panic. You have options:

• Submit a New TFN Declaration: You can go back to your second employer at any time and provide a new TFN Declaration form. Simply tick the “Yes” box for your study loan. This will prompt their payroll system to start withholding the correct amount of extra tax from your future paychecks.
• Voluntary “Self-Withholding”: If you prefer not to change your payroll status, you can manually set aside a portion of your income from that second job into a high-interest savings account. When tax time rolls around, you’ll have the cash ready to cover your HECS shortfall.
• Request Extra Withholding: You can specifically ask your payroll department to withhold an extra fixed dollar amount per pay cycle. This is a great way to “top up” your tax payments without changing your formal status if you aren’t comfortable disclosing the loan details.

The Bottom Line

Not telling your employer doesn’t get you out of paying your HECS debt; it only guarantees that you will have a larger tax bill to pay at the end of the financial year. If you want to avoid a stress-inducing “tax shock” in July, the most efficient path is to be transparent with your payroll department from day one.

Disclaimer: This information is for general educational purposes and does not constitute financial or tax advice. Because your individual tax situation is unique, you should consult with a registered tax agent or accountant to plan for your end-of-year obligations.