As I move from corporate finance to valuation to investment philosophies, the one number that seems to show up in almost every aspect of analysis is the cost of capital. In corporate finance, it is the hurdle rate that determines whether companies should make new investments, the optimizer for financing mix and the divining rod for how much to return to stockholders in dividends and buybacks. In valuation, it is the discount rate in discounted cash flow valuations and the determinants of enterprise value multiples (of EBITDA and sales).
It is perhaps because it is used in so many different contexts by such varied sub-groups that it remains a vastly misunderstood and misused number. If you are interested in reading more about the cost of capital, you may want to try this paper that I have on the topic (it is not technical or theoretical).
The Cost of Capital Calculation
The costs of capital that I compute for individual companies have two shortcomings, driven primarily by data limitations. The first is that the beta that I use for a company comes from the business that it is categorized in, rather than a weighted average of the multiple businesses that it may operate in. The second is that I have attached the equity risk premium of the country of incorporation rather than a weighted average of the ERPs of the countries in which a company operates; I had to do this since the revenue breakdowns by country were either not available for many companies or in too difficult a form to work with. If you want to compute the cost of capital for a company using my data, I have a spreadsheet that you can use that will let you break out of these bounds, allowing you to compute a beta across multiple businesses and an equity risk premium across many countries/regions.
- Country risk: Country risk shows up in two places in the cost of capital calculation, the equity risk premium for the company (which is set equal to the equity risk premium of the country it is in) and an additional default spread in the cost of debt.
- Industry concentration: Since my measure of relative risk comes from looking at the global beta for the sector in which a company operates, the cost of capital for a country will reflect the breakdown of industries in that country. Thus, the cost of capital for Peru, a country with a disproportionately large number of natural resource companies, will reflect the beta of mining and natural resource companies.
- Marginal tax rate: To the extent that a higher marginal tax rate lowers the after-tax cost of debt, holding all else constant, countries with higher marginal tax rates will have lower after-tax costs of debt and perhaps lower costs of capital.
- Debt ratio: Twinned with the marginal tax rate, in computing how much a company is being helped by the tax benefit of debt, is the amount of debt that the company uses, with higher debt ratios often translating into lower costs of capital.
- Business risk: Some businesses are clearly more risky than others and I am using my sector betas to capture the differences in risk.
- Leverage differences: Companies in some sectors borrow more than others, with mixed effects on the cost of capital. The resulting higher debt to equity ratios push up sector betas more, leading to higher costs of equity. That, though, is more than partially offset by the benefit of raising financing at the after-tax cost of debt, a bargain relative to equity.
- Country exposure: Some industry groupings have geographic concentrations and to the extent that those concentrations are in countries with very low or very high risk, relative to the rest of the world, your cost of capital will be skewed low or high.
I think that we not only spend too much time on estimating costs of capital in valuation but we also misunderstand what it is designed to measure. At the risk of repeating myself, here are four suggestions that I have on the cost of capital:
- Don't make the cost of capital the receptacle of all your hopes and fears: Many analysts take to heart the principle that riskier firms should have higher costs of capital (or discount rates) but then proceed to intuit what that discount rate should be for company, given how risky they think it is. In the process, they often incorporate risks that don't belong in discount rates and attach prices for those risks that reflect their gut responses rather than what the market is paying.
- Focus on cash flows, not discount rates: When your valuations go awry, it is almost never because of the mistakes that you made on the discount rate and almost always because of errors in your estimates of cash flows (with growth, margins and reinvestment).
- Spend less time on estimating discount rates: It follows then that when you have a limited amount of time that you can spend on a valuation (and who does not?), that time is better spent on assessing cash flows than in fine tuning the discount rate.
- An approximation works well : When I am in a hurry to value a company, I use my distributional statistics (see graph above) to get started. Thus, if I am valuing an average risk company in US dollars, I will start off using an 8% cost of capital (the global median is 8.03%) and complete my valuation with that number, and if I still have time, I will come back and tweak the cost of capital. If it is very risky firm, I will start off with a 10.68% cost of capital (the 90th percentile) and gain revisit that number, if I have the time.
Spreadsheets
Datasets
- Cost of Capital (US$), by Country - January 2017
- Cost of Capital (US$), by Industry - January 2017
- US $ Cost of Capital - Percentiles for US and Global companies
- Data Update 1: The Promise and Perils of Big Data
- Data Update 2: The Resilience of US Equities
- Data Update 3: Cracking the Currency Code - January 2017
- Data Update 4: Country Risk and Pricing, January 2017
- Data Update 5: A Taxing Year Ahead?
- Data Update 6: The Cost of Capital in January 2017
- Data Update 7: Profitability, Excess Returns and Corporate Governance- January 2017
- Data Update 8: The Debt Trade off in January 2017
- Data Update 9: Dividends and Buybacks in 2017
- Data Update 10: A Pricing Update in January 2017