Overview of the Changes
Australia has overhauled its thin capitalisation rules and introduced Debt Deduction Creation Rules (DDCR). These changes, now in law, apply differently depending on income years:
- Thin capitalisation rules align with OECD BEPS Action 4. They are now law and apply from 1 July 2023 for general thin cap provisions. The DDCR apply from 1 July 2024 for both existing and new related-party debt deductions. (ato.gov.au)
- These rules affect multinational businesses operating in Australia, privately owned foreign-controlled Australian entities, and wealthy private groups with outbound operations. (ato.gov.au)
Key Tests in New Thin Capitalisation Framework
Taxpayers must now choose among three tests for net debt deductions:
- Fixed-ratio test: Limited to 30% of EBITDA; excess denied but carried forward for up to 15 years.
- Group ratio test: Based on worldwide group gearing and EBITDA; no carry forward of excess.
- Third-party debt test: External debt (excluding related-party debt) allowed in full; deductions from related-party portion denied.
The switch eliminates the old arm’s length debt test. (ato.gov.au)
Compliance Impact & Risk Areas
- Related-party loan structuring: Significant changes for entities using intra-group debt; terms must be arm’s length or deductions denied under DDCR.
- Carried forward denial of excess: Under the fixed-ratio test, excess debt must be documented and tracked to apply carry-forward correctly.
- Restructuring risk: Transactions designed to shift debt among group entities may attract scrutiny.
- Interaction with Division 7A: Loans between controlling shareholders and companies may fall under these rules. (ato.gov.au)
Practical Steps to Ensure Compliance
- Conduct a full audit of intra-group and external debt: classify related versus third-party; review interest rate terms.
- Model which test (fixed-ratio, group, or third-party) yields the best outcome; document your choice and rationale.
- Maintain precise financial records: EBITDA calculations; debt balances; group structure documentation.
- Consult with transfer pricing and tax structuring specialists: related-party debt will need careful structuring.
- Use transitional planning: some income years not yet caught; plan ahead where possible.
Example
Global Holdings Pty Ltd, with EBITDA of A$10 million and net debt of $4 million, if using the fixed-ratio test its net debt deduction limit is 30% of EBITDA = A$3 million. The $1 million excess is denied but may be carried forward. If using the group ratio test could allow full $4 million depending on group gearing.
Private groups must review structure early, maintain documentation, and choose the most beneficial test while staying within compliance to avoid adverse assessments.