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.
Carney government campaign commitment and post-election measure reducing the lowest federal personal income tax bracket rate from 15% to 14% effective 1 July 2025, with full-year implementation from 2026. The bracket covers taxable income up to roughly C$57,375 (indexed). Because all filers benefit on the first dollar of taxable income above the basic personal amount, the absolute dollar benefit is largest in mid-to-upper brackets in dollar terms but proportionally largest for lower-income filers. Department of Finance estimated cost at roughly C$6B per year at full phase-in. Non-refundable tax credits tied to the lowest bracket rate (e.g. basic personal amount, age credit) were unchanged, preserving the credit value calculation separately.
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.