IESET.
Policies·au_henry_tax_review_2010

Henry Tax Review

AUS·2008 – 2010·enacted 2010-05-02·ALPcandidate
movestax progressivity—tax corporate—

What the policy did

Australia's Future Tax System Review (Ken Henry chair) commissioned May 2008, reported 2 May 2010 with 138 recommendations including broad-based resource-rent tax, company-tax cut to 25%, abolition of inefficient state taxes, and rationalisation of transfers. Most recommendations shelved; RSPT proposed and later remodeled as MRRT.

Policy-content fingerprint — what this policy moved, on which axes

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.

intended
—
tax progressivity
fiscal.tax_progressivity
Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
unchanged · weak
Review proposed structural reform; limited enactment.
—
tax corporate
fiscal.tax_corporate
Statutory and effective corporate tax rates, treatment of depreciation, and international competitiveness.
unchanged · weak
Recommended cut to 25% not enacted at time.

Enacted by

Empirical evidence — linked hypotheses

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?".

The 2000 Schroder corporate + personal tax reform package (top personal rate cut from 53 to 42 percent staged 2000-2005, corporate rate cut from 40 to 25 percent, capital-gains exemption on inter-corporate shareholdings) is associated with a 1.0 to 1.5 percentage point rise in the German top-1 pre-tax income share over 2000-2008 vs Eurozone synthetic control, but no measurable rise in aggregate output growth beyond Eurozone trend.
tax_inequality_germany_2000_schroder_reforminferred
viafiscal.tax_progressivityfiscal.tax_corporate
PARTIAL — mean_gap=+0.3903, |gap|/pre_sd=0.43, p_perm=0.4 (gap below 0.5×pre_sd or placebo p≥0.10)
partial
Chilean post-Pinochet tax progressivity reforms — Concertación-era Aylwin-Frei marginal-rate increases 1990-1995, Bachelet 2014 reform raising corporate rate from 20 to 27 percent + DTA tightening, Boric 2022-2024 reform attempts — produced gradual reductions in the Chilean top-1 pretax income share by at least 1.5 percentage points over 1990-2024 vs Latin-American synthetic comparator pool, with most of the level shift concentrated in 1990-2000 rather than the recent reform attempts.
tax_inequality_chile_post_pinochet_progressivityinferred
viafiscal.tax_progressivityfiscal.tax_corporate
INCONCLUSIVE_DATA_PENDING — insufficient pre-period coverage (years=0, donors=0)
run pending
Estonia's 1994 flat-tax 26 percent (subsequently reduced to 20 percent by 2015) and the unique 2000 corporate-tax reform (taxing only distributed corporate profits) produced a measurable rise in the Estonian top-1 pretax income share over 1994-2010 vs Baltic synthetic comparator (LVA, LTU), with the distributed-profit-only corporate regime channelling capital-income into top-decile reported income while reducing taxation of retained earnings.
tax_inequality_estonia_1994_flat_tax_dividend_reforminferred
viafiscal.tax_progressivityfiscal.tax_corporate
INCONCLUSIVE_DATA_PENDING — insufficient pre-period coverage (years=1, donors=0)
run pending
Greek Memorandum-era tax hikes 2010-2018 (top marginal income rate raised to 45 percent, VAT hikes to 24 percent standard, ENFIA recurring property tax 2014, solidarity surcharge 2011-2019) raised the disposable-income Gini coefficient by at least 1.5 Gini-points relative to Eurozone- comparator synthetic control over the period, with the regressivity driven by VAT and property-tax incidence rather than income-tax progressivity.
tax_inequality_greece_troika_tax_hikes_2010_2018inferred
viafiscal.tax_progressivity
PARTIAL — mean_gap=+3.175, |gap|/pre_sd=3.7, p_perm=0.333 (gap below 0.5×pre_sd or placebo p≥0.10)
partial
Post-apartheid South African tax structure (top marginal income rate raised to 45 percent in 2017, capital-gains inclusion ratio raised 2012 + 2016, recurring property-tax effective burden via municipal rates) produced a measurable reduction in the South African top-1 pretax income share over 1995-2024 vs SADC synthetic comparator pool, with the recurring property-tax channel contributing more than the marginal-income-rate channel to the distributional effect.
tax_inequality_south_africa_property_tax_burdeninferred
viafiscal.tax_progressivity
INCONCLUSIVE_DATA_PENDING — insufficient pre-period coverage (years=5, donors=0)
run pending
Countries in the top quartile of Heritage lower-tax-burden score in 2024 have lower latest-available extreme-poverty headcount than bottom-quartile countries, consistent with free-market country policy regimes outperforming less market-oriented regimes on this outcome.
heritage_tax_burden_extreme_poverty_current_gapinferred
viafiscal.tax_progressivityfiscal.tax_corporate
PARTIAL — gap sign/magnitude not decisive (diff=1.296, p=0.7399)
partial
Conditional on latest real GDP per capita and broad Heritage region, countries with higher Heritage lower-tax-burden score in 2024 have lower latest-available extreme-poverty headcount.
heritage_tax_burden_extreme_poverty_income_region_robustnessinferred
viafiscal.tax_progressivityfiscal.tax_corporate
PARTIAL — controlled coefficient not decisive (coef=-1.28, p=0.2307)
partial
Progressive income-tax marginal rates (up to roughly 70% top rate) have been compatible with strong growth in post-war US 1945-1980 and Nordics, falsifying extreme-Laffer-curve positions.
top_marginal_rate_growth_tradeoffinferred
viafiscal.tax_progressivity
PARTIAL — coef=+0.0006927, p=0.558 (above α=0.05); direction inconclusive
partial

Similar historical policies

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.

UK Howe Budget (12 June 1979) — tax reorientation
GBR·1979
match
0.8
tax progressivitytax corporate
Bush 43 tax cuts (EGTRRA 2001 + JGTRRA 2003)
USA·2001
match
0.8
tax progressivitytax corporate
Skattestop (tax freeze) 2002
DNK·2002
match
0.7
tax progressivity
Gotabaya Rajapaksa tax cut package (Sri Lanka 2019)
LKA·2019
match
0.7
tax progressivitytax corporate
19 percent flat tax (PIT/CIT/VAT) 2004
SVK·2004
match
0.7
tax progressivitytax corporate
Mexican fiscal / hacendaria reform (2014)
MEX·2014
match
0.7
tax progressivitytax corporate
Goods and Services Tax introduction
AUS·2000
match
0.6
tax progressivitytax corporate
Colombian tax reform of 1974 (Decretos 2053-2247)
COL·1974
match
0.6
tax progressivitytax corporate

References