Statutory and effective corporate tax rates, treatment of depreciation, and international competitiveness.
Rudd government announced 2 May 2010 40% Resource Super Profits Tax on mining rents, triggering a A$22m mining-industry advertising campaign and contributing to Rudd's leadership ouster 24 Jun 2010. Gillard negotiated with BHP/Rio/Xstrata a remodeled Minerals Resource Rent Tax (MRRT) at 22.5% effective on iron ore and coal only.
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.