Flat Tax Some Americans are supporting switching to a flat income tax rate of 15 How much would you pay under this plan Your Income X 15 or 15 Calculator Tip To multiply by a percentage you can use your calculator in two ways You can use the percent symbol key or you can enter the percentage as a decimal To change a percentage to a decimal move the decimal point two digit places to the left Example 20 becomes 0 20 Regressive Tax Plan Mark X next to the row that matches your yearly income TOTAL Proposed Regressive Plan 40 on income up to 25 000 30 on income between 25 000 and 34 000 25 on income between 34 000 and 44 000 20 on income between 44 000 and 80 000 10 on taxable income over 80 000 Calculate your tax For example 10 000x40 4 000 in tax