Understanding the Scraping of Deductability for General Interest Charges and Superannuation Guarantee Increases in 2025
- Blanca Rios
- May 20
- 3 min read

Managing financial responsibilities can be daunting for both individuals and businesses. A frequently discussed topic is the elimination of deductions for General Interest Charges (GIC) and Shortfall Interest Charges (SIC), along with the forthcoming increase in the Superannuation Guarantee (SG) in 2025. This blog post will simplify these important subjects to help you understand the complexities involved and their potential impact on you.
Understanding General Interest Charges and Shortfall Interest Charges
General Interest Charges (GIC) are levied by the Australian Taxation Office (ATO) on unpaid tax amounts, accruing daily on overdue tax liabilities. For instance, if you owe $1,000 in tax and delay payment for 30 days, you might incur an additional charge of around $30 to $50, depending on the current GIC rate.
Shortfall Interest Charges (SIC) occur when the tax reported in a return is less than what should have been reported based on actual income. For example, if you declare a taxable income of $50,000 but the actual amount is $60,000, the ATO may impose SIC to recover the interest lost on the underpaid tax amount.
Both GIC and SIC significantly affect your overall tax liability, influencing your financial planning and cash flow.
From 1st July 2025, taxpayers will no longer be able to deduct the General Interest Charge (GIC) and Shortfall Interest Charge (SIC) on their tax returns. This change, enacted by Parliament on 26th March, means taxpayers will need to reconsider how they handle tax debts.
Under the new regulations, the Commissioner can still remit interest charges in cases where it is fair and reasonable, considering the circumstances surrounding delayed tax payments or shortfalls.
This change aims to create a fairer environment for those who already fulfill their obligations.
While GIC and SIC remain non-deductible, clients can explore payment arrangements with the ATO. Eliminating the deductibility of the General Interest Charge (GIC) and Standard Interest Charge (SIC) will make using the ATO less appealing for taxpayers, as the GIC is typically higher than most commercial interest rates.
Consider approaching a bank for a loan to cover the ATO debt. Bank loans have a clear advantage: the interest on these loans is generally tax-deductible. Seeking a bank loan is a proactive strategy that could help offset the impact of GIC and SIC’s loss of deductibility.
Superannuation Guarantee Increase in 2025
Starting 1st July 2025, the Superannuation Guarantee (SG) rate will rise from 11.5% to 12%. Employers should update payroll systems to reflect the new rate and ensure compliance. Failure to comply could result in penalties, including the Superannuation Guarantee Charge (SGC).
This is part of a strategy to enhance Australia’s retirement savings system, promoting better financial futures for retirees.
This increase can significantly affect both employers and employees. For example, if an employee earns $70,000 annually, the increase will add about $350 more to their annual super contribution, potentially leading to larger retirement savings over time.
Implications for Employers
Employers should prepare for this increase, as it will impact budgeting and financial projections. Non-compliance can lead to penalties, so ensuring the new SG rate is accounted for in payroll is crucial. For example, if a company employs 10 staff members, each earning an average of $70,000, failing to update the SG could cost the business over $3,500 in lost contributions over a year.
Employers may also want to review their payroll systems to ensure they can easily accommodate this change. Planning ahead can ease the cash flow impact and assist in maintaining good employee relations.
Benefits for Employees
For employees, an increase in SG leads to larger superannuation balances over time, primarily benefiting younger employees. For instance, a 25-year-old with a starting salary of $70,000 could accumulate up to an additional $30,000 or more by the time they reach retirement age, thanks to the power of compound interest and the increased contribution rate. Staying informed about these changes allows employees to adjust their retirement plans accordingly.
Additionally, from 1st July 2025, super contributions of 12% will be paid on the Australian Government’s Parental Leave Pay. The payment will be administered by the Australian Taxation Office (ATO) and paid as a lump sum to the recipient’s nominated superannuation fund after the relevant financial year ends.
Final Thoughts
In conclusion, understanding the elimination of deductions for General Interest Charges and Shortfall Interest Charges is crucial for managing tax liabilities effectively. These deductions can ease the financial burden of tax-related charges, especially those tied to income-generating activities.
Furthermore, the upcoming increase in the Superannuation Guarantee in 2025 requires attention from both employers and employees. Planning ahead and making necessary adjustments is important to avoid any issues, as preparation and compliance are essential for a smooth transition to the new rates.
Although tax obligations and superannuation requirements can be daunting, being informed and proactive can significantly enhance your financial planning and security.
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