(AA) S.à r.l. — waste-to-energy — v Administration des contributions directes

Distilled

The facts

The appellant is a Luxembourg financing company. On 21 December 2010 it lent to a French subsidiary — in which it held 65 per cent by 2017, the judgment not stating its holding at the loan date — at 12 per cent per annum, to fund the acquisition of equipment for a waste-to-energy and biomass power plant. The appellant had itself issued dollar bonds in 2011 and 2015, subscribed by its Luxembourg parent, a securitisation vehicle. The bond coupon was defined by reference to the loan's interest rate and to any other income and gains linked to it, which had the effect of passing the currency risk up to the parent.

The plant did not work properly. Final acceptance of the works came on relaxed operational targets in June 2017, and by the end of that year the borrower had negative equity. On 11 September 2017 a term sheet was signed by four parties: the borrower, the appellant, the group holding control of the borrower — a third party unrelated to the appellant, despite being a minority shareholder — and that group's own subsidiary. It provided for the rate to move to 6 per cent, for the controlling group to absorb costs and subordinate or waive amounts due to it, and for part of the debt to be converted into equity.

The restructuring was implemented in March 2018. Debt was capitalised, the appellant contributed its entire shareholding to a vehicle of the controlling group in exchange for a minority stake given as around 19 per cent in the facts and around 20 per cent in the Court's own reasoning, and a settlement agreement recorded acceptance of interest equal to the amount accrued to 15 October 2017. A new facility was granted at 6 per cent with an additional guarantee from the controlling group. The borrower was declared in cessation of payments in December 2018.

For 2017 the tax office added two amounts to taxable profit: the interest forgone, characterised as a hidden capital contribution, and an excess of bond interest deducted. It applied 12 per cent to the receivable and an arm's length rate of 11.85 per cent to the bonds, taking the 12 per cent from the taxpayer's own transfer pricing analysis, which had produced an arm's length range of 7.97 to 14.2 per cent.

The litigation

Tribunal administratif · 6 June 2025 · authority prevails

The tribunal dismissed the action in full, analysing the transaction as a reduction of the rate from 12 to 6 per cent across the whole of 2017 and treating the third-party involvement as not decisive. The appellant also reported it as having confined the analysis to the loan alone, required a fresh transfer pricing report, and held that consideration had to be at least equivalent to the reduction in the appellant's net assets; those characterisations reach us through the appeal brief rather than the tribunal's own text. This judgment is covered separately in the ajiho FT Cases library.

Cour administrative · 22 July 2026 · both limbs reversed

The State's brief was struck out as filed one day late, and the appellant's reply went with it. On the merits the Court re-delimited the transaction: this was a waiver of interest for the period from 16 October to 31 December 2017, not a full-year rate reduction. It then held the waiver arm's length and the bond interest deductible.

ajiho commentary

A transfer pricing study is time-stamped

The most useful holding is also the most uncomfortable. Neither party contested the taxpayer's own analysis, and the tax office simply took the 12 per cent from it. The Court held it could not do so: the study had been prepared after the event to document the original loan, and was therefore built on the context and conditions prevailing when the loan was made, at the risk of distorting the result if applied elsewhere. Citing the documentation chapter on periodic review, the Court refused to let an origination-date study govern a distressed-restructuring year. Note what it did not hold — the study was not wrong, and the 12 per cent was not disturbed as a rate. It had simply ceased to be apt. The obligation to refresh cuts both ways — and here it cut against the authority relying on the taxpayer's file.

Realistic alternatives, expressly adopted

The Court quoted the business restructuring chapter directly. The analysis is made in the light of the economic circumstances at the time of the restructuring and the realistic options available, assessed entity by entity and in a coordinated way where the elements are economically linked. The test is not whether an independent creditor would accept a loss in absolute terms, but whether that loss is smaller than the loss the other reasonably available options would produce. Framed that way, accepting a partial waiver rather than triggering default was rational.

Consideration need not be concomitant

This is the holding most likely to be cited. Accepting a partial waiver in a restructuring, rather than forcing the borrower's default, can be perfectly arm's length even where the consideration does not arise at the same time — here, an additional guarantee given on the new facility by a third party, and an equity stake received later. The tribunal's reported test — that consideration must be at least equivalent to the reduction in net assets — is displaced by that reasoning, though the Court never quotes or expressly disapproves it. Concessions in workouts are almost never matched by simultaneous quid pro quo, and a rule requiring it would have made arm's length restructuring impossible.

Interest runs on nominal, not on an impaired value

The appellant carried its bond debt at estimated repayment amount rather than nominal. The Court held that valuing a liability below nominal is in principle inadmissible, permissible only where enforceability can be excluded with a probability bordering on certainty, or on release. More importantly it held valuation irrelevant to the interest question: interest runs on the principal contractually due, because an accounting write-down does not alter what the debtor owes. That disposes of the bond limb and is a clean statement for any group carrying impaired intra-group debt.

A caveat that belongs in the reading

The State's brief was struck out for lateness — the one-month period, suspended over the reduced-service summer period, expired the day before it was filed — and at the hearing the State put itself in the Court's hands on the point. Four load-bearing findings then turn on facts not usefully contested: the re-delimitation of the transaction, the transfer pricing data, the third-party character of the restructuring, and the conclusion itself, which rests on the State having advanced nothing to invalidate the appellant's approach. Read with the Court's own caveat that the arm's length principle is not an exact science, the first limb is a real holding reached on an unopposed record, and its precedential weight should be discounted accordingly. The second limb is different: interest on nominal rests on article 23 and on settled German commentary, and would likely have survived a contested hearing.

What this means for your business

On workouts involving intra-group debt. A concession is testable against the realistic alternatives available at the time, not against an abstract standard of what an independent lender would tolerate. Document the alternatives that were considered and why the one chosen produced the smaller loss.

On consideration. It does not have to be simultaneous, and it does not have to come from the borrower. A guarantee from a third-party shareholder, or an equity stake received months later, can be the quid pro quo. Record the linkage at the time.

On refreshing your file. A study built for origination does not carry over into a year in which the borrower's credit has materially deteriorated. That is a documentation obligation — and, as here, a shield when an authority tries to apply your old numbers to new facts.

On impaired intra-group debt. Accounting impairment does not reduce the principal on which interest accrues. Groups carrying written-down receivables or payables should check that their tax computations follow the contract rather than the balance sheet.

This decision reverses the first-instance judgment covered separately in the ajiho FT Cases library, which should now be read as superseded. ajiho will continue to monitor Luxembourg administrative case law on intra-group financing.

Case reference

(AA) S.à r.l. v Administration des contributions directes, Cour administrative du Grand-Duché de Luxembourg, N° 53194C du rôle, ECLI:LU:CADM:2026:53194, judgment of 22 July 2026, pleadings heard 22 January 2026, appeal lodged 17 July 2025. On appeal from Tribunal administratif, n° 47100 du rôle, 6 June 2025. President: Francis Delaporte; Serge Schroeder, vice-president; Alexandra Castegnaro, conseiller. Clerk: Jean-Nicolas Schintgen. For the appellant: Loyens & Loeff Luxembourg S.à r.l., Maître Pierre-Antoine Klethi. For the State: délégué du gouvernement Tom Kerschenmeyer. The judgment is anonymised. Primary source: official judgment.

Every disputed amount — the loan principal, both adjustments and the borrower's negative equity — is anonymised in the published text, though rates, percentages and the procedural indemnity claim are given in the clear. The reasoning rests on Chapter IX on business restructurings, Chapter I on accurate delineation and Chapter V on documentation rather than Chapter X. The Court reverses the labelling of the two adjustments used in earlier procedural correspondence, so the figures should be traced by description rather than by label.
This appeal supersedes the first-instance judgment covered separately in this library: (AA) S.à r.l. — Tribunal administratif, 6 June 2025 →