QUESTION 75 For corporate taxpayers, the allowable deduction for charitable contributions may not exceed: 5% of the corporation's taxable income for any year other than 2020 or 2021. 10% of the corporation's taxable income for any year other than 2020 or 2021. 15% of the corporation's taxable income for any year other than 2020 or 2021. 30% of the corporation's taxable income for any year other than 2020 or 2021. 50% of the corporation's taxable income for any year other than 2020 or 2021.