What is STSL? It is the amount employers withhold when employees have student loans. Study and Training Support (STSL) in the pay run often surprises employees with an outstanding debt. The ATO says these repayments flow through the income tax system, and payroll uses updated tax tables.
Employees with an STSL debt should check their payslips early, because the withholding amount can change with pay frequency. New employees with an STSL should declare it quickly, so payroll can determine relevant calculations correctly. This guide explains STSL in the pay run, withholding checks, and EOFY tax arrangements.
What is STSL?
STSL means study and training support loans, an income-contingent debt managed through Australia’s tax system. People usually repay it after their income reaches the compulsory repayment threshold. Employers do not charge interest like a bank loan, but the balance follows tax rules.
The loan can cover higher education, apprenticeship, and training costs, depending on eligibility. Repayments appear through tax withheld during the year, then final amounts are settled on assessment. A tax return may adjust the final figure if withholding was too low or high.
What is STSL Tax?
STSL tax means payroll withholding for the loan component during ordinary pay runs. The amount of STSL depends on income, pay frequency, and published thresholds and rates. Employers use tax tables and payroll software to calculate STSL consistently. If an employee has an STSL debt, the payroll system withholds the correct amount before payment. These amounts are treated as tax deducted, then reported through the tax system.
What is STSL on My Payslip?
STSL on your payslip refers to extra withholding for study and training support loan repayments. Employers in Australia generally combine PAYG and STSL into one amount during payroll processing. Accordingly, the deduction helps cover any potential STSL debt before the employee lodges their tax return. The actual withholding depends on the employee’s pay, pay run frequency, and applicable tax table.
Additionally, payroll systems incorporate PAYG and STSL calculations automatically using current ATO tax tables. Employees should review their pay slips regularly because incorrect withholding may affect EOFY tax arrangements.
Who STSL Applies to in Australia:
STSL generally applies to employees with a study and training support loan debt. Employers generally withhold when a tax file number and loan details appear in payroll records. It also applies where exempt foreign employment income counts toward repayment income under ATO rules. Workers should check their tax return, because the final repayment can differ.
Types of Loans Covered Under the STSL Program
The program includes several study and training loans managed through Australia’s income tax system. These study and training support loans generally require repayment after income reaches yearly thresholds and rates. HELP loans support university students, while training support loan options assist vocational and apprenticeship pathways.
Additionally, employers may withhold STSL amounts during each pay run when employees declare eligible debts. Common loan categories include HECS-HELP, FEE-HELP, VET Student Loans, and Australian Apprenticeship Support Loans.
Main Loan Categories Under STSL:
| Loan Type | Purpose | Repayment Method |
|---|---|---|
| HECS-HELP | Supports subsidised university course contributions | Through the tax system, after the threshold income |
| FEE-HELP | Covers eligible tuition fees for higher education students | STSL repayment through income tax withholding |
| VET Student Loans | Assists approved vocational education students | Tax is deducted through payroll withholding |
| Australian Apprenticeship Support Loan | Helps apprentices cover living and training costs | Withhold STSL once repayment thresholds apply |
| Student Start-up Loan | Assists eligible students with study expenses | Reported through tax return obligations |
Official government guidance explains eligibility and repayment conditions for each training support loan category.
STSL Thresholds and Rates:
The ATO updates thresholds and rates yearly; employers should monitor current tax tables carefully. STSL calculations now follow a marginal repayment method instead of applying percentages across total income. Consequently, employees keep more wages before compulsory repayments begin under revised repayment arrangements.
| Repayment Income for 2025–26 | STSL Repayment Requirement |
|---|---|
| Below $67,000 | Nil compulsory repayment |
| $67,000 to $124,999 | 15 cents for each dollar above the threshold |
| Above $125,000 | $8,700 plus 17 cents above threshold |
These thresholds affect payroll software settings, tax withheld amounts, and employee take-home earnings during each pay frequency.
Changes to STSL Rules in 2026:
Several 2026 changes adjusted the STSL tax work process and compulsory repayment structure across Australia. Firstly, the government increased minimum repayment thresholds from previous limits to $67,000 annually. Secondly, repayments now apply only above the threshold income instead of total taxable earnings.
Additionally, many borrowers received a one-off 20% debt reduction on eligible study and training loans. These updates affected tax tables, payroll system settings, Single Touch Payroll reporting, and tax return calculations.
How STSL Works in a Pay Run
The payroll system checks the relevant tax tables, then works out the withholding amount for each applicable pay frequency. It adds PAYG and STSL into one amount, and withholds it before wages are paid. Afterwards, Single Touch Payroll sends the withheld amounts in the pay run and year-to-date figures to the ATO.
This reporting helps employers in Australia stay aligned with payroll records and employee tax obligations. Additionally, systems incorporate PAYG and STSL calculations automatically using the calculation method published by the ATO.
Withhold STSL from wages:
Withhold STSL from wages whenever the employee with an STSL declares a loan, and the table requires deductions. Use the correct tax tables here based on weekly, fortnightly, or monthly pay cycles. If wages change, recalculate through payroll software and compare pay run amounts carefully.
When the employee earns exempt foreign employment income, review repayment income before finalising withholding. Employers may also consider withholding extra tax from their pay to cover any potential debt incurred during the year.
Single Touch Payroll and Payroll Reporting:
Single Touch Payroll and payroll reporting capture withholding in each pay run for an employee. Employers send updated figures through compliant payroll software instead of manual end-of-year summaries. The ATO uses those reports to match tax deducted, super information, and repayments to the ATO.
Accurate STP reporting also reduces corrections when a pay run changes later. Furthermore, pay slips and most payroll systems show up as STSL beside the ordinary withholding amount.
STSL Tax Tables and Withholding Rules
STSL tax explained within payroll generally refers to additional withholding connected to study and training support loans. The ATO updates the withholding tables regularly, and employers should use the current weekly, fortnightly, or monthly table. Accordingly, you must withhold the STSL component from taxable earnings, including allowances, bonuses, and commissions. The amount depends on the pay period, the employee’s pay, and the applicable pay frequency.
Afterwards, payroll software should combine PAYG and STSL into one withholding total. Employers should check ATO updates before each pay run, because table changes take effect immediately. The tax goes to the ATO, and the employee later sorts out how much tax should have been paid when they lodge their tax return.
STSL Repayment and Exemption Rules
Employees repay STSL through the tax system, and the ATO reconciles amounts at tax time. When withholding falls short, the employee’s tax return can create an extra repayment amount. Conversely, excess withholding may reduce the final balance or generate a refund. Repayment income can include salary, wages, and certain other reportable amounts under ATO rules.
Nevertheless, exempt foreign employment income still counts for repayment calculations under current ATO rules. Employers should still withhold correctly during the year, because the final tax return settles the account.
STSL Repayment Basics:
Employees with a loan should tell their employer using the withholding declaration process. The payer then withholds extra money through ordinary PAYG reporting and sends it to the ATO. At tax return time, the ATO compares withholding against the employee’s repayment income. Any remaining loan amount continues until the employee clears it in full.
Exempt Foreign Employment Income:
Exempt foreign employment income does not remove a study loan obligation for borrowers. Instead, the ATO includes that income when it works out repayment income. That means some employees overseas still trigger repayments, even when their income stays exempt. However, they may need separate PAYG variation advice if withholding needs adjustment.
STSL for Employers in Australia
Australian employers should treat it as part of normal payroll compliance every pay cycle. They must withhold the correct amount, report it through payroll systems, and pay it to the ATO. Additionally, new employees should complete the relevant declaration so payroll knows about their loan. If the employee later changes circumstances, payroll should update the withholding amount without delay. Accurate records reduce year-end corrections and help employees avoid surprise debts at tax time.
Pay your Employees Correctly:
Use the employee’s declaration, current tax table, and pay frequency before every run. Then add any extra withholding required for the loan and round correctly. Employers should also check termination payments separately because different rules can apply there. Finally, they should keep pay slips and reports aligned with the amount sent to the ATO.
Payroll Checks for Employers:
Run a second review whenever you hire a new employee or change software settings. Also, confirm the table date, the pay cycle, and the loan indicator before finalising payroll. Compare the result against ATO tables, and escalate mismatches immediately to payroll staff. These checks lower the risk of under-withholding and later amendment work for employers.
Conclusion
What is STSL? It is a payroll withholding component, not a separate tax outside the system. Employers must use the tax tables published by the ATO and process amounts through each pay run. Employees should confirm the STSL calculation when wages change, because actual PAYG and STSL owed can shift. That is especially important during termination pay, when pay run amounts may vary.
If employees have any leftover debt, the ATO settles it through the tax return. Keep checking your payslip, because the employee finalises their tax arrangements at EOFY. What part of STSL still feels unclear to you?
FAQs
1. Does STSL reduce take-home pay?
Yes, because payroll withholds extra money from wages. The withheld amount goes to the ATO during the year.
2. Can STSL apply to new employees?
Yes, if they fall into the category and complete the declaration. Employers then withhold using the applicable tax tables.
3. What if the employee’s pay changes during the year?
Payroll should recalculate withholding using the correct table for that pay period. The ATO says withholding can change with updated tables.
4. What is negative STSL in payroll?
It usually means a reversal or adjustment of earlier withholding. Payroll should review the pay event and confirm the correction.
5. How do employees sort out STSL at EOFY?
The ATO compares withholding with repayment of income when the employee lodges their tax return. Any leftover amount becomes part of the final assessment.