Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
Contribution exceptionnelle de solidarité — a 50% employer-paid levy on individual remuneration exceeding €1m (combined with social contributions, effective rate ~75%), for 2013 and 2014 only. Initial individual-assessment design struck down by the Conseil constitutionnel 29 December 2012; redesigned as employer-paid levy and enacted in the 2014 budget. Expired end-2014; raised ~€420m, well below campaign projections.
Per invariant 3, reforms are scored by what they did on each channel-separated axis, not by the party that enacted them. This fingerprint is how the policy-match engine finds historical analogues.
Explicit links are curated by the author. Inferred links are hypotheses in the library that test the same axes this policy moved — the framework's answer to "what does the data say about a policy like this?".
Ranked by axis-fingerprint overlap with this policy. Direction match bolded — those are the closest historical analogues. Shape of the match is what drives policy-outcome comparison, not the country or party label.