Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
Taxation of capital income (dividends, capital gains, inheritance, wealth). Distinct from corporate rate.
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Package 1 of the Comprehensive Tax Reform Program, signed 19 December 2017 and effective 1 January 2018. Personal income tax: zero-bracket raised to ₱250,000 annual income; top marginal rate retained at 35% above ₱8m; compression and flattening of middle brackets cutting take-home tax burden for most wage-earners. To finance the PIT cut, TRAIN broadened the VAT base by removing dozens of exemptions; raised excise on petroleum products in three tranches (₱2.50/l in 2018, ₱2.00/l in 2019, ₱1.50/l in 2020); imposed a sugar-sweetened-beverage tax (₱6/l for caloric sweeteners, ₱12/l for high-fructose corn syrup); raised excise on automobiles, tobacco, mineral products, cosmetic procedures and documentary stamps. Revenue earmarking: 70% for Build Build Build infrastructure, 30% for social mitigation (unconditional cash transfer to bottom 10m households ₱200-300/month 2018-20).
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.