Working paper · June 2026
The Margin Squeeze
Global markets are compressing the price of Luxembourg's core export. Domestic institutions are indexing the cost of producing it. The blades are closing — and the ordering of any response is a property of the risk structure, not a preference.
live the model recomputes every figure from the scenario you choose — open the interactive diagnostic
The scissors
The structural risk is not in either price on its own. It is that the two are governed independently: the price the economy receives for its dominant export and the price it pays to produce it answer to different signals, set by different actors.
The revenue blade is exogenous — a price taken, not set. Passive-fund substitution, fee transparency and the bargaining power of institutional allocators drive secular compression, and there is no domestic instrument that arrests it. The cost blade is endogenous and indexed: automatic wage indexation ties compensation to consumer prices. Under the paper's central calibration the two reach index 133 and 183 respectively by 2040, from a shared base of 100 in 2025, and financial-sector net margin falls from roughly 50% to 31%.
That gap is the squeeze. The interactive model lets you move the assumptions behind it and watch which lever actually moves the 2040 debt path — and which, like the pension slope, moves the cliff beyond it instead.
What this is, and what it is not
It is a conditional structural diagnostic, not a point forecast and not a prediction. It says what follows if a stated set of assumptions holds, and it is built so you can change them and see the answer change. Every figure carries a confidence tag distinguishing what is drawn directly from primary statistics from what is modelled on top of them — the same discipline the instruments on this site use when they mark a number live, exact, measured or stored.
It draws on published data from the IMF, the CNFP, the CSSF, STATEC, the BCL and Eurostat. None of those institutions has reviewed, endorsed or been consulted on this work; their statistics are cited as sources, nothing more. It is a working paper by one author, it concerns public finances rather than any security or investment, and nothing in it is financial advice.
Where the evidence does not support a conclusion, the paper bounds the uncertainty rather than resolving it. The measured decline in output per hour is the clearest case: part of it may be a terms-of-trade effect rather than an efficiency failure — the sector doing more work, more efficiently, for less revenue per unit, while paying indexed costs. How much is price artefact and how much is genuine depends on the deflation method used in the national accounts, and the paper says so instead of picking the flattering reading.
Read it
The paper, version 2 →
September 2026. The revision, in full. Every computed figure on the page is
produced by the same engine the interactive model runs, so the paper and the
model cannot disagree.
The interactive diagnostic →
Scenario switching, a failure-point monitor, a wage-indexation × housing
stress grid, and sliders over the full parameter set. It now carries both
vintages: switch between the June model and the September one to see what each
revision did. Opens in a new tab.
The first version (PDF, 197 KB) →
June 2026, kept as published. Section 7 of the revision lists every figure
that changed between the two and why.
What this does not claim
- That it forecasts anything. It is a conditional diagnostic: what follows if a stated set of assumptions holds — and the model exists so you can change them.
- That the June version and this one are the same document. The revision changes eleven parameters and two accounting identities, and section 7 sets out each one, its source and its effect. Where the two disagree, the September version is the current statement.
- That any institution stands behind it. The IMF, CNFP, CSSF, STATEC, BCL and Eurostat are cited as sources of published data; none has reviewed or endorsed it. It is one author’s working paper, and it is not financial advice.
Built and checked under the standard.