Related-party debt, management fees and the thin capitalisation and Part IVA interface
Danube Agribusiness Pty Ltd (DAPL) is an Australian resident company wholly owned by Danube Holdings Pte Ltd, a Singapore company with substantial staff. DAPL's tax EBITDA for 2024-25 is $6.0 million. It is funded by a $40 million loan from its parent at 9% a year, when an independent benchmark for a comparable unsecured loan is 5%; $3.6 million of interest was paid during the year. DAPL also paid its parent an $800,000 management fee for services actually performed by the parent's staff in Singapore, and paid a $1.2 million royalty to a Cayman Islands affiliate that owns the 'Danube' brand but has no employees and no premises. All three amounts were paid gross - no withholding was made on the interest or the royalty. The parent is not registered for GST in Australia and the services are not connected with Australia. DAPL is not an ADI or a financial entity, is not in a consolidated group, and derives all of its income in Australia.
1. Calculate the debt deduction allowed to DAPL for 2024-25 under the thin capitalisation rules and explain what happens to the disallowed amount.
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For income years beginning on or after 1 July 2023, general entities apply the fixed ratio test unless they elect the group ratio test. The arm's length debt test is no longer available to non-financial entities.
- Net debt deductions: $3.6 million interest, no interest income.
- Tax EBITDA: $6.0 million.
- Fixed ratio: 30% × $6.0 million = $1.8 million threshold.
Deduction allowed: $1.8 million. Deductions denied: $1.8 million.
The denied amount is added back in DAPL's return and is permanently lost - it cannot be carried forward, unlike the old thin capitalisation safe harbour. It also increases the company's taxable income and therefore its tax and franking outcomes.
The group ratio test is unlikely to help: it allows the higher of the fixed ratio and the worldwide group's net interest expense to EBITDA ratio, and the group funds DAPL with a single related-party loan rather than third-party debt.
Also check the debt deduction creation rules: if any part of the $40 million loan was used to fund payments to related parties (a distribution, the royalty, or a return of capital), the deduction attributable to that debt is denied outright and cannot be resurrected by any test. Trace the loan proceeds through the bank statements before lodging.
2. What are the transfer pricing and withholding tax consequences of the interest and the royalty, and does the deduction depend on them?
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Interest - transfer pricing. A 9% rate against a 5% benchmark is not arm's length. Subdivision 815-B substitutes the arm's length consideration, so only 5% × $40 million = $2.0 million is potentially deductible, and $1.6 million is denied. DAPL self-assesses this adjustment and must hold benchmarking evidence. The $2.0 million then passes through the thin capitalisation calculation and is still capped at $1.8 million, so the total deduction is $1.8 million.
Interest - withholding. Interest paid to a non-resident attracts interest withholding tax under s128B at 10% (the domestic rate and the Singapore treaty rate are both 10%): $3.6 million × 10% = $360,000 should have been withheld from the quarterly payments. As payer, DAPL is liable for the unremitted amount plus general interest charge and a 25% administrative penalty for failing to withhold.
Royalty. Royalties to a Cayman Islands recipient attract 30% withholding (no treaty): $1.2 million × 30% = $360,000. The affiliate has no employees or premises, so the arm's length character and amount are both exposed under Subdivision 815-B and possibly Part IVA.
The deduction is conditional. Section 26-25 denies a deduction for interest, royalties and dividends paid to non-residents until the withholding tax is paid. Until the $720,000 is remitted, the deductions are simply unavailable - which compounds the thin capitalisation result. Remit the withholding, then claim the (reduced) deductions.
3. Assess the Part IVA exposure created by the 9% rate, the $800,000 fee and the Cayman royalty, and explain the GST treatment of the fee.
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Part IVA. The scheme is the combination of related-party debt pricing, the offshore fee and the interposition of a no-employee brand owner. A tax benefit clearly arises ($1.6 million excess interest, part of the fee, and the royalty). On the s177D factors, the dominant purpose is strongly indicated: the 4-point pricing premium on a loan a third party would make at 5%, a Cayman entity that neither develops nor exploits the brand, and the group's ability to have the brand held anywhere. Subdivision 815-B and Part IVA can both apply; the Commissioner commonly uses Part IVA where the arrangement, not merely the price, is contrived.
Consequences: a determination under s177F, amended assessments (four-year amendment period, unlimited for fraud or evasion), a base penalty of 50% of the shortfall subject to a 20% or 80% voluntary disclosure reduction, and possible promoter penalty exposure for the advisers who designed the structure.
GST on the management fee. The parent makes a supply that is not connected with Australia and is not registered, so it is not a taxable supply. DAPL, being registered and acquiring for a creditable purpose, must reverse charge under Division 84. The GST is 10% of the consideration, not 1/11: $800,000 × 10% = $80,000. DAPL reports $80,000 on its BAS and claims an $80,000 input tax credit, so the cash effect is nil, but the acquisition must be reported. If the fee is reduced to an arm's length amount, the reverse-charged GST falls proportionately, and the BAS already lodged should be corrected.