Marginal vs. effective tax rates are two ways to express the percentage of your income that goes to tax. But they're each used for very different purposes.

Your marginal tax rate is the highest income tax rate you’ll pay on your income. Because the U.S. has a progressive tax system, different tiers of your income are taxed at different rates. The ...

This note describes how most features of an income tax system (and to some extent social security and welfare) can be described as a combination of lumpsums and marginal tax rates and plotted in a ...

A progressive tax is when the tax rates increase (or “progresses”) as the taxable income increases for an individual or a business.