Statutory and effective corporate tax rates, treatment of depreciation, and international competitiveness.
Trade policy openness — tariffs, non-tariff barriers, FTAs, industrial protection.
Sequential reductions in Irish corporate tax from 50% (1987) to 12.5% unified rate (2003), alongside IDA Ireland active investment- attraction programme. Combined with EU single-market access (1993), native English-language workforce, and educated pool from 1980s-90s expansion of Irish higher education. Result: massive FDI accumulation, especially in pharmaceuticals, IT, and financial services. GDP per capita surged from well below EU average 1987 to among highest globally by 2010s. Critics note: (a) GDP measure distorted by profit-routing of US multinationals (GNI* now preferred by Irish CSO), (b) distributional benefits to native workforce contested, (c) tax-base erosion for partner EU states.
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.