Discussion paper
DP17985 Effective Tax Rates and Firm Size
This paper provides novel evidence on the relationship between firm size and effective corporate tax rates using full-population administrative tax data from 13 countries. In all countries, small firms face lower effective tax rates than mid-sized firms due to reduced statutory tax rates and a higher propensity to register losses. In most countries, effective tax rates fall for the largest firms due to the take-up of tax incentives. As a result, a third of the top 1 percent of firms face effective tax rates below the global minimum tax of 15 percent. The minimum tax could raise corporate tax revenue by 27 percent in the median sample country.
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