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.
First Thatcher-era Budget. Top rate of income tax cut from 83% to 60% (over £25,000); basic rate from 33% to 30%; VAT unified at 15% (up from twin 8%/12.5% rates). Corporation tax unchanged. Also prepared exchange-control abolition (announced July 1979, effective 23 October 1979). Announced MTFS-style monetary-discipline framing though formal MTFS was published March 1980.
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.