The benefits from tax breaks do not flow equally to households of different income levels, according to a recent Congressional Budget Office (CBO) report. Here’s a quick look at the distributional effects of the tax expenditures that were included in CBO’s analysis.

What Are Tax Expenditures?

Tax expenditures, commonly called tax breaks, are written into the U.S. tax code and provide financial assistance for specific activities, entities, or groups of people. They contribute to the budget deficit, affect the distribution of income, and influence the economy by changing how people work, save, and invest. CBO’s report places tax expenditures into one of four categories:

• Exclusions are when income from certain sources is excluded from taxable income.
• Deductions allow taxpayers to reduce their taxable income by amounts that they have spent on specific purposes.
• Tax credits reduce tax liability dollar for dollar by the amount of the credit, and in the case of refundable credits, any remainder can be paid out to the taxpayer.
• Net preferential tax rates are when a rate is charged on certain sources of income that is lower than the ordinary tax rate.

Tax Expenditures Cost the Federal Government $1.6 Trillion in 2019

Tax expenditures cause the federal government’s revenues to be lower than they would have been otherwise. While CBO notes that overall tax expenditures amounted to $1.6 trillion in 2019, the latest CBO report focuses on the distributional effects of a $1.2 trillion subset of tax expenditures in the individual income and payroll tax systems. In other words, CBO’s distributional analysis excludes corporate income tax expenditures and some minor individual income and payroll tax expenditures.

Of the $1.2 trillion of tax expenditures analyzed in CBO’s report, those for the individual income tax totaled $1.0 trillion and those affecting payroll taxes accounted for $0.2 trillion. The two tax expenditures that affect payroll taxes are exclusions for health insurance and for pension and retirement accounts. Some of the biggest tax breaks applied to individual income taxes also include those affecting payroll taxes as well as reduced tax rates on dividends and long-term capital gains, the child tax credit, and the earned income tax credit.