Income (Income tax, Negative income, Capital gains, & corporate), Social security contributions, Payroll or workforce, Property (Property taxes, Inheritance, expatriation, Transfer, & Wealth (net worth)), Goods and services (Value added, Sales, & Excises), Tariff, License fees, & Poll), Descriptive labels (Consumption, Environmental, Proportional, progressive, regressive, and lump-sum, Direct and indirect, & Fees and effective)