Another way to calculate the cost of debt is to determine the total amount of interest paid on each debt for the year. Knowing your cost of debt can help you understand what you’re paying for the privilege of having fast access to cash. To calculate your total debt cost, add up all loans, balances on credit cards, and other financing tools your company has. Then, calculate the interest rate expense for each for the year and add those up.

Michelle Lambright Black is a nationally recognized credit expert with two decades of experience. Finally, you input all of the figures above into the cost of debt formula. Apply for financing, track your business cashflow, best xero add and more with a single lendio account. Some sectors like start-up technology companies are dependent on raising capital via stock, while other sectors like real estate have collateral to solicit lower-cost debt.

For example, assume two different banks offer otherwise identical business loans at interest rates of 4% and 6%, respectively. Using the pretax definition of cost of capital, it is clear that the first loan is the cheaper option because of its lower interest rate. The first approach is to look at the current yield to maturity or YTM of a company’s debt. An example would be a straight bond that makes regular interest payments and pays back the principal at maturity. We define the cost of debt as the market interest rate, or yield to maturity (YTM), that the company will have to pay if it were to raise new debt from the market.

- As a result, firms look to optimize their weighted average cost of capital (WACC) across debt and equity.
- Because of this, the net cost of a company’s debt is the amount of interest it is paying minus the amount it has saved in taxes.
- The effective rate and volume of each financing source are taken in proportion to calculate the cost of capital which is referred to as WACC – Weighted Average Cost of Capital.
- However, once you have a list of all the interest rates with the debit balances, it should provide comprehensive information about the business’s debt to be used in future financing decisions.
- Several factors can increase the cost of debt, depending on the level of risk to the lender.

This approach is particularly useful for private companies that don’t have a directly observable cost of debt in the market. However, it’s considered an expensive source of financing as payment of a dividend does not tax allowable. However, the problem with debt financing is that it increases leverage and signals the financial instability of the business if in excess. It is a tool that helps one know whether that loan is profitable for business as we can compare the cost of debt with income generated by loan amount in business.

## Formula and Calculation of Cost of Debt

Further, the list should also contain any loans obtained with a personal guarantee but used by the business. It’s important to note that both state and federal rates of taxes should be included in the given formula above for more accuracy. Let’s see an example to understand the cost of debt formula in a better manner. Suppose you run a small business and you have two debt vehicles under the enterprise. The first is a loan worth $250,000 through a major financial institution.

To calculate your after-tax cost of debt, you multiply the effective tax rate you calculated in the previous section by (1 – t), where t is your company’s effective tax rate. The income tax paid by a business will be lower because the interest component of debt will be deducted from taxable income, whereas the dividends received by equity holders are not tax-deductible. There are mainly two sources to raise the finance that include debt and equity.

The pretax cost of debt is $500 for a $10,000 loan, but because of the company’s effective tax rate, their after-tax cost of debt is actually $150 for the same $10,000 loan. This makes a significant difference in a company’s total cost of capital. The after-tax cost of debt is the weighted average cost of capital for a company and its projects. It is calculated by taking the interest rate paid on debt, subtracting the tax rate, and then subtracting any tax savings from interest deductibility. Because it accounts for both the cost of financing and taxes, this metric can be used as a tool to evaluate projects that require borrowing money from external sources.

## What are the steps to calculate WACC?

To calculate the cost of debt, first add up all debt, including loans, credit cards, etc. Next, use the interest rate to calculate the annual interest expense per item and add them up. Finally, divide total interest expense by total debt to get the cost of debt or effective interest rate. Equity is inherently more risky than debt (except, perhaps, in the unusual case where a firm’s assets have a negative beta). If taxes are considered in this case, it can be seen that at reasonable tax rates, the cost of equity does exceed the cost of debt.

## Definition of After-tax Cost of Debt

WACC is used in financial modeling as the discount rate to calculate the net present value of a business. More specifically, WACC is the discount rate used when valuing a business or project using the unlevered free cash flow approach. Another way of thinking about WACC is that it is the required rate an investor needs in order to consider investing in the business.

## What is the after-tax cost of debt?

Get instant access to video lessons taught by experienced investment bankers. Learn financial statement modeling, DCF, M&A, LBO, Comps and Excel shortcuts.

It plays a significant role in determining the overall capital structure and has an impact on various business decisions. In this article, we will discuss in detail the process of calculating after-tax cost of debt. Cost of debt is the term that describes how companies repay the lenders and creditors from which they borrow money. Cost of debt is the effective interest rate a company pays to creditors—also known as debt holders or lenders. You can use the after-tax cost of debt to compare the cost of debt to another source of financings, such as equity or another form of debt.

For example, if a company’s only debt is a bond it has issued with a 5% rate, its pre-tax cost of debt is 5%. If its tax rate is 40%, the difference between 100% and 40% is 60%, and 60% of the 5% is 3%. Understanding and calculating the after-tax cost of debt is crucial for businesses to make informed financial decisions and manage their capital structure effectively. Always consider the implications of taxes when evaluating your debt financing strategies.

Corporations rely on WACC figures to determine which to see projects are worthwhile. Projects with projected returns higher than WACC calculations are profitable, while projects with returns less than the WACC earn less than the cost of the financing used to run the project. Don’t waste hours of work finding and applying for loans you have no chance of getting — get matched based on your business & credit profile today. If you only want to know how much you’re paying in interest, use the simple formula.

Put simply, if the value of a company equals the present value of its future cash flows, WACC is the rate we use to discount those future cash flows to the present. Finally, to calculate the after-tax cost of debt, simply subtract the company’s marginal tax rate from one and then multiply the result by the effective tax rate you found earlier. The after-tax cost of debt is the interest paid on the debt minus the income tax savings as the result of deducting the interest expense on the company’s income tax return. The weighted average cost of capital (WACC) is a calculation of a firm’s cost of capital in which each category of capital is proportionately weighted.