From 1st July 2025, the Australian Taxation Office (ATO) is introducing significant changes to the way it handles outstanding tax debts — and the impact on small businesses and individuals could be substantial if you don’t act promptly.
📈 Daily Compounding Interest on Outstanding Debts
Under the new rules, any outstanding debts with the ATO will attract General Interest Charges (GIC) that compound daily. This means interest will be calculated not just on the original debt, but also on the accumulated interest from the day before — leading to faster-growing liabilities over time.
For example, a $10,000 tax debt that remains unpaid for several months could quickly escalate into a much larger financial burden under the compounding interest regime.
As of July 2025, the GIC rate is 11.15% (this rate is updated quarterly), and the compounding effect will amplify the cost of non-compliance.

❌ Interest No Longer Tax Deductible
Another major change is that from 1st July 2025, interest charged on overdue tax debts will no longer be tax deductible.
Currently, businesses can claim a deduction for the GIC interest incurred, providing a minor relief. However, this deduction will be removed moving forward — further increasing the real cost of ignoring or delaying tax debt payments.
🔎 What This Means for You
These changes are part of a broader ATO push to improve tax compliance and recover outstanding debts more effectively. If you or your business are carrying ATO debts, it’s now more important than ever to:
- ✅ Review your ATO account and identify any overdue amounts
- ✅ Engage a registered tax agent to negotiate a payment plan
- ✅ Prioritise timely lodgment and payment of BAS, IAS, and tax returns
- ✅ Consider proactive financial planning to avoid accumulating future interest charges
🛡️ How We Can Help
At Yallaroy Business Solutions, we work closely with clients to manage tax obligations, avoid penalties, and structure payment plans that minimise financial stress. If you’re concerned about how these changes might affect you, contact our team today for personalised advice and support.
One missed payment can now cost more than ever. Don’t let tax debt snowball — get ahead of it today.



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