How would the small business deduction calculated be for 2020? Multiple Choice 13% * the lesser of active business income, taxable income, or the $500,000 annual limit. 19% * the greater of active business income, taxable income, or the $500,000 annual limit. 13% * the greater of active business income, taxable income, or the $500,000 annual limit, 19% * the lesser of active business income, taxable income, or the $500,000 annual limit