The marginal tax rate is

A) the difference between the total tax rate and the average tax rate.
B) the percentage of total income paid as taxes.
C) equal to the change in taxes/change in taxable income.
D) equal to the total taxes/total taxable income.

Marginal Tax Rate

The percentage of tax applied to your income for each additional dollar of income, essentially the tax rate on the last dollar earned.

Total Tax Rate

The combined rate of all the taxes that an individual or business is liable to pay, expressed as a percentage of income.

Average Tax Rate

The ratio of total taxes paid to total income, indicating the share of income that goes to taxes.