The reason WHY we use after-tax cost of debt in calculating the WACC
Weighted average cost of capital
The weighted average cost of capital (WACC) is the rate that a company is expected to pay on average to all its security holders to finance its assets. The WACC is commonly referred to as the firm’s cost of capital. Importantly, it is dictated by the external market and not by management.
What is the difference between WACC and cost of capital?
- Find out the components and their proportion on the capital structure of the company - debt (Wd), preferred stock (Wp), common stock (We)
- Find out the returns on each of these sources - Interest rate on company's debt (d), preferred stock (p), common stock (e)
- WACC is the weighted average of cost of all these funds.
What happens to WACC when you increase debt?
The Effect of Issuing Preferred Stock on a Company's WACC
- Weighted Average Cost of Capital. Both a capital's weight and its cost affect WACC. ...
- Preferred Stock Vs. Debt. ...
- Preferred Stock Vs. Common Equity. ...
- The Net Effect. Depending on how the relative use of debt or common equity is affected, issuing preferred stock may increase and decrease a company's WACC in the immediate term.
How to use WACC to value a company?
With $28.3 Billion Cerner Bid, Oracle Has Jumped The Shark
- Oracle’s Bid To Acquire Cerner. ...
- Is Electronic Medical Record Industry Attractive? ...
- Oracle and Cerner Better Off Combined? ...
- Can Oracle Earn Back The Cerner Purchase Premium? ...
- Will Oracle Integrate Cerner Successfully? ...
Is a high WACC good or bad?
Is a high WACC good or bad? WACC is not a measure of higher profitability of the company. Infact it is the opposite of that. Investors are not willing to invest in the company unless for a higher interest rate, and your cost of capital rises. Hence higher WACC is not a good thing. Click to see full answer.
Do you use after-tax cost of debt in WACC?
Take the weighted average current yield to maturity of all outstanding debt then multiply it one minus the tax rate and you have the after-tax cost of debt to be used in the WACC formula.
What is the after-tax cost of debt for use in the WACC calculation?
After-tax cost of debt is the net cost of debt determined by adjusting the gross cost of debt for its tax benefits. It equals pre-tax cost of debt multiplied by (1 – tax rate). It is the cost of debt that is included in calculation of weighted average cost of capital (WACC).
Why do we use an after-tax figure for the cost of debt but not for the cost of equity?
-The cost of capital depends on the risk of the project, not the source of the money. Why do we use aftertax figure for cost of debt but not for cost of equity? -Interest expense is tax-deductible. There is no difference between pretax and aftertax equity costs.
Why is the after-tax cost of debt rather than before tax cost used to calculate WACC?
The after-tax cost of debt is the amount that is computed by subtracting tax savings from interest rate and is used in the calculation of the weighted average cost of capital because it is tax-deductible.
Why is after tax cost of debt more relevant?
The correct answer is B. The after-tax cost of debt is more relevant because it is the actual cost of debt to the company.
What is the advantage of calculating the cost of debt after taxes?
The primary benefit of calculating the after-tax cost of debt is knowing how much a business can save on its taxes due to the interest it paid over the year. This means businesses need to know their effective tax rate to understand their total cost of debt. Calculating the effective tax rate for a business is easy.
Why is the cost of capital measured on an after-tax basis?
The cost of capital is expressed as a percentage and it is often used to compute the net present value of the cash flows in a proposed investment. It is also considered to be the minimum after-tax internal rate of return to be earned on new investments.
Is pre-tax WACC higher than post tax WACC?
Type of WACC Therefore both the return on debt and the return on equity are pre-tax values. This results in a higher WACC, all other things being equal, which results in a regulated business receiving a higher maximum allowed regulated revenue which must be used to cover the businesses tax liabilities.
What is after-tax cost of capital?
Treasurer's Guidebook. The after-tax cost of debt is the initial cost of debt, adjusted for the effects of the incremental income tax rate. To calculate it, subtract the company's incremental tax rate from 100% and then multiply the result by the interest rate on the debt.
What is cost of debt in WACC?
The cost of debt is the return that a company provides to its debtholders and creditors. When debtholders invest in a company, they are entering an agreement wherein they are paid periodically or on a fixed schedule.
When calculating WACC what capital is excluded and why?
What Capital Is Excluded When Calculating WACC? When using WACC to calculate the cost of debt focuses on the two sources of financing: equity financing and debt financing. Accounts payable and accruals are not considered in the WACC formula.
Why is cost of capital taken as minimum acceptable rate of return on an investment by the firm?
Organizations use RRR to break down the possible benefit of capital undertakings. The expense of capital alludes to the normal profits from the protections gave by an organization. The necessary pace of return is the return premium needed on speculations to legitimize the danger taken by the financial backer.
What is the cost of debt?
The cost of debt is the return that a company provides to its debtholders and creditors. When debtholders invest in a company, they are entering an agreement wherein they are paid periodically or on a fixed schedule. Bond agreements or indentures set up the schedule.
What is the difference between corporate bonds and Treasury bonds?
Corporate bonds differ from Treasury bonds (government-issued) in the sense that they carry significantly greater default risk. A default happens when a firm fails to pay an interest payment to a bondholder. No matter how financially stable a firm appears, the risk of default is always a possibility.
What is default rate?
Default Rate The default rate is the rate of all loans issued by a lender or financial institution that is left unpaid by the borrower and declared to be. Market Risk Premium.
Is debt reflected in the balance sheet?
Debt instruments are reflected in the balance sheet of a company and are easy to identify. However, the issue is with the definition of debt: “A liability is an obligation resulting from a past transaction that leads to a probable future outflow of economic benefit.
Do companies use average weights for WACC?
Some firms may use the average weights that company competitors use for WACC. However, events such as an IPO lack available data. There is a belief that a company’s capital structure will tend towards an average.
Is debt financing a tax deductible expense?
It provides the additional benefit that interest payments are tax-deductible ( tax shield. Tax Shield A Tax Shield is an allowable deduction from taxable income that results in a reduction of taxes owed.
What is WACC in finance?
WACC is the average of the costs of these types of financing, each of which is weighted by its proportionate use in a given situation. By taking a weighted average in this way, we can determine how much interest a company owes for each dollar it finances.
Why do companies use WACC?
Because of this, company directors will often use WACC internally in order to make decisions, like determining the economic feasibility of mergers and other expansionary opportunities . WACC is the discount rate that should be used for cash flows with a risk that is similar to that of the overall firm.
What is WACC in equity?
Put another way, WACC is an investor’s opportunity cost of taking on the risk of investing money in a company.
Why is WACC formula so easy to calculate?
Because certain elements of the formula, like the cost of equity, are not consistent values, various parties may report them differently for different reasons. As such, while WACC can often help lend valuable insight into a company, one should always use it along with other metrics when determining whether or not to invest in a company.
What is included in WACC?
All sources of capital, including common stock, preferred stock, bonds, and any other long-term debt, are included in a WACC calculation. A firm’s WACC increases as the beta and rate of return on equity increase because an increase in WACC denotes a decrease in valuation and an increase in risk.
How to calculate WACC?
WACC is calculated by multiplying the cost of each capital source (debt and equity) by its relevant weight, and then adding the products together to determine the value. In the above formula, E/V represents the proportion of equity-based financing, while D/V represents the proportion of debt-based financing. The WACC formula thus involves the summation of two terms:
When to use WACC?
Securities analysts frequently use WACC when assessing the value of investments and when determining which ones to pursue. For example, in discounted cash flow analysis, one may apply WACC as the discount rate for future cash flows in order to derive a business's net present value.

Estimating The Default Risk Spread
Full Cost of Debt
- Debt instruments are reflected in the balance sheet of a company and are easy to identify. However, the issue is with the definition of debt: “A liability is an obligation resulting from a past transaction that leads to a probable future outflow of economic benefit. Debt instruments are instruments issued as a means of raising funds other than those classified in/as shareholders f…
WACC Weighting – Book Or Market Value Weightings
- Balance sheet items are valued historically. They are outdated but consistent with accounting rules. It is argued that book value removes volatility but is non-representative of market conditions. Most firms use WACC at the market value weighting approach. However, there are several other possibilities:
Weighting Proportions – Cost of Debt
- Current market value
1. This is empirically correct but the current position may be atypical and exposed to volatility - Optimum leverage ratio
1. Using either Modigliani & Miller or an empirical model, it is possible to derive the optimal capital structure for the firm’s WACC. Determining optimum leverage is merely a matter of finding the optimal capital structure that trades off tax benefits with the added financial stress of debt.
Additional Resources
- Thank you for reading this section of CFI’s free investment banking bookon cost of debt and WACC. To keep learning and advancing your career, the following CFI resources will be helpful: 1. Debt Equity Ratio 2. Equity Risk Premium 3. Default Rate 4. Market Risk Premium