Average effective tax rate for the following federal taxes under a current law baseline for 2018, by income percentile: individual and corporate income taxes; payroll taxes for Social Security and Medicare; estate taxes; and excise taxes. Baseline is the law in place for year 2018 as of August 23, 2018. For more information on TPC’s baseline definitions, see : http://www.taxpolicycenter.org/taxtopics/Baseline-Definitions.cfm