We use population-wide administrative micro-data to provide new estimates of income inequality and effective tax rates by income groups in Brazil, capturing all income and all tax payments. Our data allow us to link businesses to their owners and thus to allocate business income and associated taxes to the corresponding individual firm owners. We provide sharp upward revisions to official inequality estimates: the top 1% earns 27.4% of total income in 2019, one of the highest level recorded in the world. The tax system, which relies heavily on consumption taxes, is regressive: while the average tax rate in the economy is 42.5%, this rate falls to 20.6% for million-dollar earners (roughly the top 0.01% of the distribution), due to the non-taxation of dividends and provisions that reduce corporate tax liabilities. We provide evidence suggesting that inequality in developing countries may be systematically underestimated, as even in Brazil—where dividends are untaxed, and hence incentives to retain income within companies are limited—attributing profits to business owners substantially raises income inequality.
