Marginal versus Average Tax Rates (Refer to Table 2.7) Corporation Growth has $88,000 in taxable income, and Corporation Income has $8,800,000 in taxable income. Refer Table 2.7. What is the tax bill for each? Suppose both firms have identified a new project that will increase taxable income by $10,000. How much additional taxes will each firm pay? Is this amount the same or different?