⚡ Quick answer
WACC helps determine your company's cost of capital using the formula wd×rd + we×re.
WACC (Simple)
Weighted average: wd×rd + we×re (percent inputs, same units).
📖 What it is
The WACC (Weighted Average Cost of Capital) is a critical financial metric that helps businesses determine their overall cost of capital. This simple calculator allows you to compute it easily using the formula wd×rd + we×re, where wd represents the weight of debt, rd is the cost of debt, we is the weight of equity, and re is the cost of equity.
To use this calculator, you'll need to input the total debt (D), total equity (E), the after-tax cost of debt (rd), and the cost of equity (re). The output will give you the WACC as a percentage, which is essential for evaluating investment opportunities and financial performance.
It's important to assume that the capital structure remains stable over the period considered. Additionally, ensure that all inputs are in the same units (percentages) to guarantee accurate results. Avoid relying solely on this tool for complex financial analyses as it may not account for all variables.
How to use
- Identify your company's total debt (D) and equity (E).
- Determine the cost of debt (rd) and cost of equity (re).
- Calculate the weights of debt (wd = D/(D+E)) and equity (we = E/(D+E)).
- Apply the WACC formula: WACC = wd×rd + we×re.
- Interpret the result to understand your overall cost of capital.
📐 Formulas
- Cost of Debt Component—(D/(D+E))×rd
- Cost of Equity Component—(E/(D+E))×re
- Total WACC—WACC = (D/(D+E))×rd + (E/(D+E))×re
💡 Example
Consider a company with:
D = $40M,
E = $60M,
after-tax rd = 4%,
and re = 10%.
Using the WACC formula:
WACC ≈ (40/(40+60))×4% + (60/(40+60))×10% ≈ 7.6%.
Real-life examples
Tech Startup Funding
A tech startup has $2M in debt and $3M in equity, with a cost of debt of 5% and a cost of equity of 12%. WACC = (2/(2+3))×5% + (3/(2+3))×12% = 9.0%.
Manufacturing Company
A manufacturing firm with $40M debt and $60M equity, after-tax cost of debt at 4% and cost of equity at 10% results in WACC ≈ 7.6%.
Scenario comparison
- High Debt vs. Low Debt—A company with 70% debt may have a lower WACC due to lower cost of debt, while a company with 30% debt may face higher WACC due to higher reliance on equity.
- Stable vs. Growth Company—A stable company with low growth may have a lower WACC due to predictable cash flows, while a high-growth company may have a higher WACC due to increased risk.
Common use cases
- Evaluate investment opportunities for a business.
- Determine the feasibility of new projects or expansions.
- Compare financing options for corporate acquisitions.
- Assess the cost-effectiveness of different financing structures.
- Analyze the impact of changes in capital structure.
- Guide financial decision-making in startups.
- Understand risk-return trade-offs for investors.
- Benchmark against industry standards for capital costs.
How it works
This calculator works by applying the formula for WACC, which takes into account the proportion of debt and equity in a company's capital structure, along with their respective costs. The result is a weighted average that reflects the overall cost of financing for the business.
What it checks
This tool checks the weighted average cost of capital based on the inputs provided for debt and equity costs.
Signals & criteria
- Debt (D)
- Equity (E)
- Cost of Debt (rd)
- Cost of Equity (re)
Typical errors to avoid
- Pretax rd without adjustment.
- Beta estimation errors.
- Stable capital structure assumed.
Decision guidance
Trust workflow
Recommended steps after getting a result:
- Ensure all input percentages are accurate and in the same unit.
- Double-check the values for debt and equity before calculation.
- Review the assumptions about capital structure stability.
FAQ
FAQ
Pretax rd?
Multiply by (1−T) first or use the after-tax cost tool.