Judgment summary
The case concerns the 2017 corporate income tax (IRC) and municipal business tax (ICC) bulletins issued against (AA), a Luxembourg company carrying on intra-group financing activity. The tax office had added a global amount to (AA)'s taxable result, treating part of it as a hidden capital contribution (apport caché) linked to interest foregone on a loan to its subsidiary (CC), and another part as a non-deductible hidden distribution linked to interest paid on bonds issued to its parent (DD).
The tribunal administratif dismissed (AA)'s principal action on 6 June 2025. On appeal, the Cour administrative first excluded the State's response memorandum and the appellant's reply as filed out of time, and then examined the merits without contestation on the earlier procedural point under §205(3) AO.
The Court found in favour of (AA) on both substantive points, reforming the bulletins so that neither the alleged hidden capital contribution nor the interest disallowance stood, and remanded the case to the director for execution.
Background
(AA) is a Luxembourg company held by (DD), a securitisation vehicle governed by the law of 22 March 2004, and was the majority shareholder (65%) of (CC) S.A.S, a French company (§ background section; also paras on facts). (AA) carried on an intra-group financing activity: it granted a euro-denominated loan ("the Prêt") to (CC) at an annual interest rate of 12%, to finance equipment for waste-to-energy production, and issued US dollar bonds to (DD) in 2011 and 2015, with the bond interest rate depending on, among other factors, the interest rate on the Prêt.
(CC) encountered serious financial difficulties over the years, principally linked to construction and operational problems at its plant, which never functioned properly even after final acceptance of works on 14 June 2017. A restructuring became necessary: a Term Sheet dated 11 September 2017 was signed between (CC), (FF), (EE) (a third-party minority shareholder of (CC), unrelated to (AA)) and (AA). Under the restructuring, part of the Prêt debt was capitalised on 21 March 2018 (giving rise to new shares subscribed by (AA)), (AA) contributed its shares in (CC) to (FF) in exchange for a minority stake of about 19%, and two contracts were signed on 29 March 2018: a Settlement Agreement, under which (AA) accepted an interest amount for the period from 1 January 2017 to 29 March 2018, and a new Facility Agreement bearing an annual interest rate of 6%.
On 14 October 2020, the tax office informed (AA), under §205, paragraph (3) AO, that it intended to depart from the 2017 tax return by adding a global amount to taxable income, comprising a hidden capital contribution linked to an alleged excess of deducted debit interest (based on an 11.85% rate) and a hidden non-deductible distribution linked to allegedly under-declared credit interest (based on a 12% rate). (AA) replied on 4 November 2020, providing its transfer pricing analysis (the "Analyse TP") and an amended tax return, and asking for clarification of the adjustments, which the tax office did not provide before issuing the disputed IRC and ICC bulletins on 10 March 2021.
Core dispute
The dispute concerned whether two aspects of (AA)'s intra-group financing activity complied with the arm's length principle under Article 56 and Article 56bis LIR.
First, whether (AA)'s partial renunciation of interest due from (CC) on the Prêt, made as part of the wider 2017/2018 debt restructuring, amounted to a hidden capital contribution because it departed from the 12% rate supported by (AA)'s own transfer pricing analysis.
Second, whether the interest that (AA) paid to (DD) on the bonds should be calculated on the nominal value of the bonds, as argued by (AA), or on a depreciated market value, as applied by the tax office (at an 11.85% rate), with the disallowed excess being treated as a non-deductible hidden distribution.
Court findings
The Court first excluded the State's response memorandum, filed on 17 October 2025, as out of time, the statutory one-month deadline (extended for the reduced service period) having expired on 16 October 2025 at midnight; the appellant's reply, filed on 17 November 2025 in response to that late memorandum, was excluded for the same reason.
On the renunciation of interest, the Court held that the transfer pricing analysis had been prepared after the fact to support the arm's length character of the Prêt's original terms and did not address the situation of an imminent default by (CC). Referring to paragraphs 9.27, 9.28, 1.122 and 5.37 of the 2017 OECD Transfer Pricing Guidelines, the Court held that a restructuring between related parties must be assessed in light of the economic circumstances existing at the time of the restructuring and the realistic options available to the parties, rather than by reference to the conditions prevailing when the original financing was granted.
Given (CC)'s severe financial deterioration, evidenced by negative equity of (11) euros at 31 December 2017 and a declared cessation of payments on 17 December 2018, the Court found that maintaining the 12% rate was no longer an arm's length reference for 2017. It held that the relevant renunciation covered only the period from 16 October 2017 to 31 December 2017 (not a reduction from 12% to 6% for the whole year, as the first instance judges had held). The Court found that an independent creditor in a comparable position could rationally accept a partial waiver of interest to avoid a worse outcome from default or insolvency, particularly where the restructuring involved an unrelated third party, (EE), and yielded (AA) countervailing benefits, including additional guarantees and a minority stake of about 19-20% in (FF). It concluded that the renunciation of interest did not violate the arm's length principle and could not be characterised as a hidden capital contribution.
On the interest paid to (DD), the Court held, by reference to Article 23, paragraph (4) LIR, that debts must in principle be valued at the amount received to be repaid (nominal value), and that a valuation below nominal value is not permissible absent an actual and definitive debt forgiveness. It further held that the valuation of a debt is not relevant to the calculation of interest, which must run on the contractually due principal amount rather than on a depreciated market value. It therefore found that the disallowed amount constituted deductible debit interest expense.
Outcome
The Cour administrative declared the appeal well-founded on both points examined. It reformed the judgment of the tribunal administratif of 6 June 2025 and declared the principal action in reformation well-founded.
It reformed the IRC and ICC bulletins for the year 2017, both issued on 10 March 2021, holding that there was no basis to add the disputed amount to taxable profit as an alleged hidden capital contribution, and that the disputed interest amount constituted deductible debit interest arising from the bond borrowings from (DD).
The case was remanded to the director of the Administration des Contributions directes for execution, for transmission to the competent tax office. The costs of both instances were charged to the State.
Tp method highlighted
The Court applied the arm's length principle as codified in Article 56 LIR (from fiscal year 2015) and Article 56bis LIR (from fiscal year 2017), which defines the arm's length price as that which would be applied on a comparable transaction on the open market, and referred to Article 9 of the OECD Model Tax Convention as the underlying international reference.
The underlying transfer pricing analysis prepared by (AA) had determined a net margin of 0.147% on the financing volume and a debt interest rate of 12%, figures which were not contested by either party. The Court held, however, that this analysis, prepared to support the original terms of the Prêt, could not simply be applied unchanged to a subsequent debt restructuring undertaken because of the borrower's financial deterioration.
Drawing on paragraphs 9.27, 9.28, 1.122 and 5.37 of the 2017 OECD Transfer Pricing Guidelines, the Court assessed the restructuring by reference to the realistic alternatives available to the parties at the time of the restructuring, rather than the conditions prevailing at the inception of the financing, and considered the involvement of an unrelated third party and the countervailing benefits obtained by (AA) as supporting the arm's length character of the interest waiver. For the bond interest, the Court applied Article 23, paragraph (4) LIR to hold that debts, and correspondingly the interest running on them, must be calculated on nominal value rather than a depreciated market value.
Major issues / areas of contention
- Whether the State's response memorandum and the appellant's reply, filed after the statutory deadlines, could be admitted before the Cour administrative.
- Whether (AA)'s partial renunciation of interest due from (CC) under the 2017/2018 debt restructuring complied with the arm's length principle under Article 56 and Article 56bis LIR.
- Whether a transfer pricing analysis prepared at the inception of a loan remains a valid arm's length benchmark once the borrower's financial situation has significantly deteriorated and a restructuring is undertaken.
- Whether the involvement of an unrelated third-party shareholder in the restructuring, and countervailing benefits obtained by (AA), were relevant to assessing arm's length compliance of the interest waiver.
- Whether the interest waiver could be characterised as a hidden capital contribution (apport caché) to (CC).
- Whether interest on bonds issued to (DD) should be calculated on the nominal value of the debt or on a depreciated market value.
- Whether the disallowed portion of interest paid to (DD) was correctly characterised as a non-deductible hidden distribution.