Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
Legislation passed Nov 1994 under the Murayama grand coalition raising the consumption tax from 3% to 5% effective 1 Apr 1997 (1% local allocation + 4% national). Widely blamed together with 1997 Asian crisis for tipping Japan back into recession in 1997-98, informing later political caution on further rate hikes.
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.