data or technical information

In this document, the Congressional Budget Office (CBO) illustrates effective marginal tax rates under the tax and transfer systems for hypothetical families consisting of a single parent with one child, a married taxpayer with two children, and a single taxpayer with no children. These illustrations supplement the analysis of effective marginal tax rates (hereafter, marginal tax rates) faced by a hypothetical single parent with one child described in Effective Marginal Tax Rates for Low- and Moderate-Income Workers.
report

The effective marginal tax rate is the percentage of an additional dollar of earnings that is unavailable to a worker because it is paid in taxes or offset by reductions in benefits from government programs. In part, such rates are determined by income and payroll tax rates and other features of the tax system, such as tax credits and deductions that depend on earnings. However, effective marginal tax rates are also determined by programs providing cash and in-kind benefits, referred to as transfers, that target assistance to people of reduced means.