Progressive Tax: A tax system where the tax rate increases as the taxable income increases, requiring higher-income individuals to pay a larger percentage of their income in taxes.
Marginal Tax Rate: The tax rate applied to the next dollar of taxable income, which can be higher or lower depending on the individual's total income and the tax bracket they fall into.
Tax Deduction: An allowable reduction in taxable income, which can lower the overall tax liability for an individual or business.