Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Chancellor Jeremy Hunt's Autumn Statement 17 November 2022 froze personal income tax thresholds and the National Insurance primary threshold in cash terms to April 2028, and reduced the additional rate threshold from £150,000 to £125,140 from April 2023. Extended the Energy Profits Levy to 35% and introduced an Electricity Generator Levy at 45%. Fiscal drag from frozen thresholds is the largest stealth tax rise of recent decades — OBR estimated >£40bn / year by 2027-28 and ~4 million additional higher-rate taxpayers by end of freeze. Reversed most of the Truss/Kwarteng mini-budget except the NI and stamp-duty changes.
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.