Overdue Interest No Longer Tax-Deductible: How Should Australian Small Businesses Respond?

Summary: Starting from July 1, 2025, the Australian Taxation Office (ATO) will officially implement a significant tax reform: interest incurred on overdue tax payments will no longer be deductible for tax purposes. Although this policy has been announced in advance, it will have a profound impact on small and medium-sized enterprises (SMEs) that rely heavily on cash flow and face financial pressure. This article provides a professional tax perspective to explain the policy background, its implications, and practical strategies to help businesses navigate this adjustment period steadily.








