Enter the interest expense, tax rate, and outstanding debt into the calculator to determine the financing cost.

Financing Cost (Cost of Debt) Calculator

Enter the values below (typically annual figures):

Financing Cost Formula

The following formula is commonly used to estimate a financing cost, also known as the after-tax cost of debt (as a rate). This approach assumes IE is an annual interest expense and D is the average (or outstanding) debt balance over the same period.

FC = \frac{IE}{D}\,(1-TR)
  • Where FC is the financing cost / after-tax cost of debt (decimal rate per year)
  • IE is the interest expense for the period (e.g., annual) ($)
  • TR is the tax rate (decimal, e.g., 0.25)
  • D is the outstanding (or average) debt balance for the period ($)

To calculate the financing cost (after-tax cost of debt), divide the interest expense by the outstanding debt to get the pre-tax cost of debt, then multiply by (1 − tax rate).

Financing Cost Definition

A financing cost is the cost of obtaining capital. In the context of debt, it refers to the effective interest cost of borrowing—often expressed as a rate (and frequently adjusted for taxes due to the interest tax shield).

Example Problem

How to calculate financing cost?

First, determine the interest expense. For this example, the interest expense is $10,000.00.

Next, determine the tax rate. The tax rate on the expense is 5%. In decimal form this would be 0.05.

Next, determine the outstanding debt value. The outstanding debt is $500,000.00.

Finally, calculate the financing cost.

Using the formula above, the financing cost in this problem is found to be:

FC = (IE / D) × (1 − TR)

= (10,000 / 500,000) × (1 − 0.05)

= 0.019 (which is 1.9%)

FAQ

What factors can affect the cost of debt for a company?

The cost of debt for a company can be influenced by several factors including the prevailing interest rates, the company’s credit rating, the term of the debt, and market conditions. A higher credit rating, for instance, typically results in lower interest expenses due to perceived lower risk by lenders.

How does the tax rate impact the financing cost?

The tax rate impacts the financing cost through the tax shield on interest payments. Since interest expenses are often deductible (subject to tax rules and limitations), the effective cost of debt is reduced by the tax rate. A higher tax rate increases the tax shield, thereby reducing the net cost of debt for the company.

Why is it important to calculate the cost of debt?

Calculating the cost of debt is crucial for businesses as it helps in assessing the effectiveness of financing strategies, comparing different financing options, and making informed decisions on capital structure. It also plays a significant role in the calculation of a company’s overall cost of capital, which is essential for budgeting and investment analysis.