Judgment summary
This is a transcript of an application for special leave to appeal to the High Court of Australia, heard on 25 October 2024 before Gageler CJ, Gordon J and Steward J. The applicant, Singapore Telecom Australia Investments Pty Ltd (STAI), sought leave to appeal from a decision concerning transfer pricing adjustments made by the Commissioner of Taxation under Division 815-A and Article 6 of the Australia-Singapore Double Tax Agreement.
The dispute concerned intra-group financing arrangements arising from STAI's acquisition of shares in Optus from an intermediate holding company, SAI, financed by shares and debt, with SingTel as the ultimate parent. The primary judge, Moshinsky J, and the Full Court had found that an arm's length price for the financing involved imputing a parent guarantee from SingTel, based on credit rating evidence.
STAI argued that this involved an error of principle, namely imputing a guarantee based on a non-independent, parent-subsidiary relationship that would not exist between independent parties, and that if a guarantee was imputed, an arm's length guarantee fee also had to be imputed, which would increase the borrowing cost. STAI contended that without an imputed guarantee, the unchallenged evidence supported a credit spread of 400 basis points, which would resolve the case in its favour.
The Commissioner opposed special leave, arguing that the applicant would need cumulative success on multiple grounds, that there were numerous unchallenged adverse factual findings (including as to fixed interest rates, hindsight modelling, capitalisation of interest, and the use of United States bond market pricing as a proxy) that independently prevented the applicant from establishing that the assessments were excessive.
After argument, the Court retired briefly and, upon resuming, held that the appeal would not present a suitable vehicle for the Court to examine the issue of principle raised by proposed ground 1, and that the proposed appeal otherwise had insufficient prospects of success. Special leave to appeal was refused with costs.
Background
STAI acquired shares in Optus from SAI, an intermediate holding company, with SingTel as the ultimate parent. The acquisition was funded by an issue of shares and a loan of $5.2 billion, priced at the same terms as the original external takeover financing (referred to as the LNIA).
The Commissioner made transfer pricing adjustments under Division 815-A on the basis that the arm's length price for the LNIA should reflect a hypothetical parent guarantee from SingTel, informed by credit rating evidence given by expert witnesses, including Dr Chambers, Mr Chigas, Mr Weiss and Mr Johnson.
At trial, the primary judge, Moshinsky J, and subsequently the Full Court, found in favour of the Commissioner, holding that an independent party in STAI's position could reasonably be expected to obtain, and a parent such as SingTel could reasonably be expected to provide, a guarantee. The Full Court noted, in relation to a notice of contention, that there would have been much to commend the conclusion that STAI had not discharged its onus, due to forensic choices and evidentiary problems (Full Court [309]).
Core dispute
The applicant sought special leave to appeal on the basis that the courts below erred, for the purposes of Article 6 of the Australia-Singapore DTA and Division 815-A, in imputing a parent guarantee from SingTel to STAI, when such an arrangement reflected the non-independent relationship between a parent and its wholly-owned subsidiary rather than what independent parties dealing at arm's length would do (ground 1(a)).
A further issue was whether, if a guarantee were properly imputed, an arm's length guarantee fee also had to be imputed, which the joint expert evidence indicated would increase the taxpayer's overall borrowing cost (ground 1(b)). A third ground concerned the rejection below of debt capital markets (DCM) pricing evidence as a basis for the unguaranteed hypothetical interest rate (ground 3).
The applicant contended that ground 1(a) alone was sufficient to succeed, because unchallenged evidence supported an unguaranteed credit spread of 400 basis points, compared with a guaranteed spread of around 100 basis points. The Commissioner contended that the applicant needed cumulative success on grounds 1, 2 and 3, given multiple unchallenged adverse findings regarding the applicant's evidentiary case, including as to fixed interest rates, hindsight-based modelling, and capitalisation methodology.
Court findings
The primary judge accepted expert evidence, including from Dr Chambers, that STAI's credit rating with implicit parental support was BBB-, compared with SingTel's rating of AA or AA-, and found, having regard to the size of the potential saving (around 300 basis points), that it was likely a parent such as SingTel would provide a guarantee to its wholly owned subsidiary (primary judgment [165(k)], [322], [324], [328], [363(d)]). The Full Court upheld this reasoning, finding no error disclosed (Full Court [235], [245]).
The primary judge described the guarantee fee evidence as speculative (primary judgment [328]), notwithstanding a joint expert report stating that use of a SingTel guarantee, with an arm's length guarantee fee, would have resulted in a higher all-in cost to STAI (primary judgment [290], joint report [3.14]).
The Full Court also found a "very substantial disconnect" between Mr Chigas' bond market evidence and the actual financial position of the Optus Group, since his modelled interest costs over the ten-year period would have wiped out the group's net profits (Full Court [161]).
After hearing argument, the High Court (Gageler CJ, Gordon J and Steward J) held that, having regard to the state of the evidence before the primary judge, the appeal would not present a suitable vehicle for the Court to examine the issue of principle raised by proposed ground 1. The Court otherwise considered that the proposed appeal would have insufficient prospects to warrant a grant of special leave.
Outcome
Special leave to appeal was refused, with costs awarded against the applicant.
Tp method highlighted
The transfer pricing analysis centred on the arm's length hypothetical under Article 6 of the Australia-Singapore Double Tax Agreement, as incorporated into Division 815-A, applied to intra-group debt financing.
Expert evidence addressed alternative pricing methodologies, including United States debt capital markets (DCM) bond pricing as a proxy for an unguaranteed credit spread (evidence of Mr Chigas indicating 400 basis points, primary judgment [263(d)]), and pricing on the basis of an imputed parent guarantee with a guarantee fee, which the joint expert report indicated would result in a credit spread of 300 to 360 basis points before a guarantee fee (primary judgment [263(c)]), against an actual/guaranteed spread of around 100 basis points.
The dispute also concerned whether it was appropriate to import a hypothetical parent guarantee at all, given the taxpayer's argument that such a guarantee reflected the non-independent parent-subsidiary relationship rather than dealings between independent parties, engaging the principle in Glencore at paragraph 180 regarding disregarding conditions attributable to the non-arm's length relationship.
Major issues / areas of contention
- Whether it was appropriate, under Article 6 of the Australia-Singapore DTA and Division 815-A, to impute a parent guarantee from SingTel to its wholly-owned subsidiary STAI in constructing the arm's length hypothetical
- Whether, if a guarantee was imputed, an arm's length guarantee fee also had to be imputed, which would increase STAI's hypothetical borrowing cost
- Whether the rejection of debt capital markets (DCM) bond pricing evidence as a proxy for the unguaranteed hypothetical interest rate was correct
- Whether unchallenged findings on fixed interest rates, hindsight modelling, and interest capitalisation methodology independently prevented the applicant from establishing the assessments were excessive
- Whether the proposed appeal presented a suitable vehicle for the High Court to consider the issue of principle concerning imputation of a parent guarantee