After-Tax Cost of Debt Calculator
Result
After-Tax Cost of Debt Calculator The After-Tax Cost of Debt Calculator shows the real cost of borrowing after accounting for the tax deductibility of interest. Because interest expense reduces taxable income, the effective cost is the pre-tax rate multip — free online calculator.
Formula
- After-Tax Cost of Debt Calculator calculates its result from Pre-tax cost of debt (interest rate %), Tax Rate %. It uses the formula After-Tax Cost of Debt = Pre-Tax Rate × (1 − Tax Rate). Change any input to recalculate the result instantly.
- The main inputs are Pre-tax cost of debt, Tax Rate %. Enter them in the units and format shown in the calculator.
- Use monetary amounts, rates and time periods exactly as labeled; the result reflects the assumptions entered on this page.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: After-Tax Cost of Debt
- Pre-tax cost of debt: 8 interest rate %
- Tax Rate %: 21
Using Pre-tax cost of debt (interest rate %) = 8, Tax Rate % = 21, the calculated result is 7.8341.
Sample result: Calculating…
Frequently asked questions
What does the After-Tax Cost of Debt calculate?
After-Tax Cost of Debt Calculator The After-Tax Cost of Debt Calculator shows the real cost of borrowing after accounting for the tax deductibility of interest. Because interest expense reduces taxable income, the effective cost is the pre-tax rate multip — free online calculator.
Which values should I enter?
Enter Pre-tax cost of debt, Tax Rate % using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: After-Tax Cost of Debt = Pre-Tax Rate × (1 − Tax Rate).
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.