The Joint Committee on Taxation (JCT) recently released data on taxes paid at various levels of income, indicating the federal tax system is progressive, consistent with similar analysis by the Congressional Budget Office (CBO), and the Organisation for Economic Co-operation and Development (OECD).

The JCT found that the bottom 50 percent of taxpayers faced an average tax rate of 6.3 percent at the federal level, compared to an average tax rate of 32.9 percent for the top 0.01 percent of income earners.

The income tax is the most progressive aspect of the federal tax system, providing an effective tax rate of -2 percent for the bottom 50 percent of earners. The tax rate is negative for this group because they receive more benefits through refundable tax credits, such as the Earned Income Tax Credit (EITC) and Child Tax Credit (CTC), than they pay in tax. By contrast, the top 0.01 percent faces a 29.5 percent effective average federal income tax rate.

Payroll taxes supporting Social Security and Medicare are regressive, as lower-income groups face higher average rates. The bottom 50 percent faces a 6.8 percent average payroll tax rate, while the top 0.01 percent’s average rate is just 0.08 percent. This is partly due to the wage cap on the 12.4 percent Social Security payroll tax, which is levied on wages up to $142,800. Overall, however, the progressivity of the income tax more than offsets the regressivity of the payroll tax.

The federal corporate income tax is borne by people across the income spectrum, including the bottom 50 percent of taxpayers. The bottom 50 percent faces an average corporate tax rate of 0.5 percent, as they either own shares of corporate stock that are lower in value, or they earn lower wages. Those in the 50th to 90th income percentiles face a 0.7 percent average corporate tax rate, while the top 0.01 percent’s average rate is 1.9 percent.

The JCT report also shows that once the federal tax and transfer system is accounted for, the income share of those in the bottom 50 percent has declined only slightly since 1960. The income share for those in the 50th to 90th percentile has remained stable over that time, and is largely unaffected by taxes and transfers.

The top 10 percent of the income distribution, however, experience lower income shares after taxes and transfers are accounted for. The top 1 percent’s income share drops from about 14 percent before taxes and transfers to about 9 percent after taxes and transfers are accounted for, illustrating the progressive and redistributive nature of the federal tax and transfer system. This is also consistent with analysis by the CBO.

The JCT’s analysis does not include state and local taxes, which tend to be less progressive than taxes at the federal level. However, other analysis includes state and local taxes and finds the overall tax system is still progressive. Before policymakers consider options to change the federal tax code, it is important to keep in mind the progressivity of the code as it currently exists.

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