Before-tax cost of debt and after tax cost of debt David Abbot is buying a new house, and he is taking out a 30-year mortgage David will borrow 5191.000 from bank, and to repay the loan he will make 360 monthly payments (principal and interest) of $1,04409 per month over the next 30 years David can deduct interest payments on his mortgage from his taxable income, and based on this income, David is in the 32% tax bracket a. What is the before tax interest rate (per year on David's loan? 6. What is the after tax interest rate that David is paying