Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
Statutory and effective corporate tax rates, treatment of depreciation, and international competitiveness.
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Immigration policy openness — work visas, family reunification, asylum processing, border enforcement posture.
Personal income tax reform adopted in 2001 under Finance Minister Didier Reynders (Verhofstadt I government), phased in from 2002 to 2006. Reduced the number of statutory brackets from seven to five, abolished the two highest marginal rates (52.5% and 55%), introduced a refundable employment tax credit, and partly de-indexed family quotients. Aimed to restore work incentives and converge Belgian rates toward neighbouring countries' levels.
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.