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.
Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Introduction on 1 January 1988 of personal income tax (SZJA) and value-added tax (ÁFA) — the first Western-style PIT and VAT in the Warsaw Pact. Replaced turnover tax and payroll social-security financing. Deep structural-tax reform prepared Hungary for 1989- 1991 transition. Top marginal PIT rate originally 60%.
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.