The Income Approach: DCF and Capitalization of Earnings
This module teaches you to value a business based on its future earning power—the income approach. You will learn the two primary methods under this approach: the capitalization of earnings method, which is the most commonly used income approach for Main Street and lower middle market valuation, and the multi-period discounted cash flow model, which is appropriate for growing businesses with non-constant cash flows. You will also learn how to build a defensible cost of capital for a private business, a critical skill that separates credible valuation professionals from those who rely on guesswork.
PART 1: THE INCOME APPROACH — FOUNDATIONAL CONCEPTS
The income approach is one of the three fundamental approaches to business valuation, alongside the market approach and the asset approach. Its core premise is straightforward: the value of a business is the present value of the future economic benefits it will generate.
A buyer does not purchase historical financial statements. A buyer purchases a stream of future cash flows. The income approach quantifies that stream and discounts it back to today's dollars.
When the Income Approach Is Appropriate
The income approach is most appropriate in the following situations:
The business has a stable, predictable earnings history.
Future cash flows are reasonably forecastable.
The business is a going concern with value derived primarily from operations rather than tangible assets.
The buyer is a sophisticated financial investor who evaluates acquisitions based on expected returns.
The business is in a growth phase where historical earnings understate future potential.
The Two Primary Methods
There are two primary methods under the income approach:
Appropriate when a business has stable, predictable earnings and is expected to grow at a constant rate into perpetuity. This is the most commonly used income approach for Main Street and lower middle market valuation.
Appropriate when future cash flows are expected to vary materially from historical performance—due to growth, contraction, or planned changes in operations. This method projects cash flows for a discrete period (typically five to ten years), discounts them to present value, and adds a terminal value.
The choice between these methods depends on the stability and predictability of the business's earnings. A mature, stable business is well-suited to the capitalization of earnings method. A growing business with a changing earnings profile requires a multi-period DCF.
PART 2: THE CAPITALIZATION OF EARNINGS METHOD
The capitalization of earnings method is elegant in its simplicity. It takes a single representative earnings figure and divides it by a capitalization rate to arrive at value.
The Formula:
The capitalization rate is the discount rate minus the long-term sustainable growth rate.
Step 1: Determine Normalized Earnings
The starting point is normalized earnings. For Main Street businesses, the appropriate earnings measure is Seller's Discretionary Earnings. For lower middle market businesses, the appropriate measure is EBITDA. The normalization process, covered in detail in Day 5 and Day 8, ensures that the earnings figure reflects the true economic earning power of the business, adjusted for owner-specific discretionary expenses, non-recurring items, and any anomalies.
Step 2: Determine the Discount Rate
The discount rate represents the rate of return an investor would require to invest in this business, given its risk profile. For a private business, the discount rate is substantially higher than for a public company.
For Main Street businesses, discount rates of 20% to 35% are common, reflecting the high risk, illiquidity, and owner dependency inherent in small private businesses.
For lower middle market businesses with professional management and stable earnings, discount rates of 15% to 25% are typical.
For institutionally backed LMM businesses with diversified customer bases and strong market positions, discount rates of 12% to 18% are reasonable.
Step 3: Determine the Sustainable Growth Rate
The sustainable growth rate is the rate at which the business's earnings are expected to grow into perpetuity. This is not the near-term growth rate—it is the long-term, steady-state growth rate that can be sustained indefinitely.
For most Main Street businesses, a sustainable growth rate of 2% to 3% is appropriate, roughly in line with long-term inflation and GDP growth expectations. For businesses in declining industries, the growth rate may be zero or negative. For businesses with durable competitive advantages, the growth rate may be higher, but it cannot exceed the long-term growth rate of the economy as a whole.
Step 4: Calculate the Capitalization Rate
Once the discount rate and sustainable growth rate are determined, the capitalization rate is simply the discount rate minus the growth rate.
A Main Street business with moderate risk and a 25% discount rate, with a 3% sustainable growth rate, has a capitalization rate of 25% minus 3%, which equals 22%.
Step 5: Calculate the Value
Divide the normalized earnings by the capitalization rate to arrive at the business value.
Normalized SDE of $200,000 divided by a 22% capitalization rate equals $909,091 in value.
This value reconciles to a multiple of approximately 4.55 times SDE. The relationship between multiples and capitalization rates is direct and mathematical: a multiple is the inverse of the capitalization rate. A 22% cap rate equals a 4.55 times multiple. A 25% cap rate equals a 4.0 times multiple. A 33% cap rate equals a 3.0 times multiple.
Understanding this mathematical relationship allows you to explain to sellers why higher-risk businesses command lower multiples. Risk is expressed in the discount rate. A higher discount rate produces a higher capitalization rate, which produces a lower multiple. The seller who wants a higher multiple must either reduce the risk profile of the business or demonstrate higher sustainable growth.
The Mathematical Relationship Between Multiples and Capitalization Rates
A multiple and a capitalization rate are just two ways of saying the same thing. They are the inverse of each other. A 3.0x multiple means a 33% cap rate because 1 divided by 3 is 0.33. A 4.0x multiple means a 25% cap rate because 1 divided by 4 is 0.25. A 5.0x multiple means a 20% cap rate because 1 divided by 5 is 0.20.
The discount rate is the capitalization rate plus the growth rate. If you assume the business grows at 3% per year forever, you add that 3% to the cap rate. So a 4.0x multiple (25% cap rate) plus 3% growth gives a 28% discount rate. A 3.0x multiple (33% cap rate) plus 3% growth gives a 36% discount rate.
This shows why small business multiples are low. A 2.5x or 3.0x multiple means the market is demanding a 35% to 40% annual return. That is the risk premium for buying a small private company. Higher risk means higher required return, which means lower multiple. Lower risk means lower required return, which means higher multiple. The math is direct and inescapable.
This table reveals a critical insight: the multiples observed in the market (2.5x to 4.5x SDE for Main Street businesses) imply discount rates in the 25% to 35% range. These are not arbitrary numbers—they are the market's expression of the risk inherent in small private businesses.
When to Use the Capitalization of Earnings Method
The capitalization of earnings method is appropriate when:
The business has stable, predictable earnings.
The earnings base (SDE or EBITDA) is representative of future performance.
The business is expected to grow at a constant rate into perpetuity.
The valuation is for a Main Street or stable LMM business.
The method is less appropriate when:
Earnings are volatile or cyclical.
The business is in a high-growth phase where current earnings understate future potential.
The business is in transition—new management, new products, or turnaround.
The near-term earnings trajectory differs materially from the long-term trajectory.
In these situations, the multi-period DCF is the appropriate tool.
PART 3: THE MULTI-PERIOD DISCOUNTED CASH FLOW MODEL
The multi-period DCF is the gold standard for valuing businesses with non-constant cash flows. It explicitly models the expected cash flows for a discrete projection period and then captures the value beyond that period through a terminal value.
Step 1: Forecast Revenue
The revenue forecast is the foundation of the DCF. It should be based on a combination of historical performance, industry growth expectations, and company-specific factors.
The historical revenue growth rate provides a baseline. If the business has grown at 8% annually for the past five years, that is a relevant data point. But the forecast must also consider whether that growth rate is sustainable.
Industry growth expectations, available from sources like IBISWorld, provide context. If the industry is projected to grow at 4% annually, a forecast of 12% annual growth for the subject business requires a specific, credible explanation—market share gains, new product launches, geographic expansion.
Known company-specific tailwinds or headwinds must be incorporated. A new contract with a major customer supports higher growth. The loss of a key employee or increased competition suggests lower growth.
The revenue forecast should be explicit for each year of the projection period, typically five years.
Step 2: Project EBITDA Margins
The EBITDA margin is EBITDA divided by revenue. The projection should be based on the normalized historical margin, adjusted for any expected changes as the business scales.
A business with operating leverage—fixed costs that do not increase proportionally with revenue—will see margins expand as revenue grows. This is common in software and service businesses. The forecast should reflect this margin expansion.
A business with variable costs that scale proportionally with revenue will maintain stable margins. This is common in retail and distribution businesses.
A business facing cost pressures—rising labor costs, increasing rent, commodity price inflation—may see margins compress. The forecast should reflect these pressures.
Step 3: Calculate Free Cash Flow to the Firm
Free cash flow to the firm (FCFF) is the cash available to all providers of capital—both debt and equity holders—after the business has made all necessary investments in working capital and fixed assets.
The calculation is:
EBITDA − Depreciation and Amortization (to arrive at EBIT) − Taxes (calculated as if the business were a C-corporation, at the applicable marginal tax rate)
Depreciation and Amortization (added back because it is a non-cash expense) − Capital Expenditures − Increase in Net Working Capital = Free Cash Flow to the Firm
Each component requires careful estimation.
For a DCF, depreciation should be based on the expected future capital expenditures and the appropriate depreciation schedule, not simply the historical depreciation from the tax return. A simplifying assumption is to set depreciation equal to a percentage of revenue based on historical relationships.
The tax expense should be calculated as if the business were a C-corporation, using the applicable federal and state marginal tax rates. This ensures the valuation is consistent across different entity types and reflects the tax burden a buyer would face.
Capital expenditures are the investments required to maintain and grow the business. For a stable business, capital expenditures typically approximate depreciation over the long term. For a growing business, capital expenditures may exceed depreciation as the business invests in capacity.
As a business grows, it requires additional working capital—more accounts receivable, more inventory, more prepaid expenses. This investment in working capital is a use of cash and must be subtracted from EBITDA to arrive at free cash flow. The required working capital is typically estimated as a percentage of revenue, based on historical relationships.
Step 4: Calculate the Terminal Value
The terminal value captures the value of all cash flows beyond the discrete projection period. It is typically calculated using the Gordon Growth Model, which assumes that cash flows grow at a constant rate into perpetuity.
The Gordon Growth Model Formula:
The terminal growth rate should be a conservative, long-term sustainable rate. For most businesses, this is 2% to 3%, roughly in line with long-term inflation and GDP growth. It should not exceed the long-term growth rate of the economy.
Step 5: Discount All Cash Flows to Present Value
Each year's projected free cash flow, and the terminal value, must be discounted back to present value using the weighted average cost of capital (WACC).
The Discounting Formula:
The sum of the present values of all projected cash flows, plus the present value of the terminal value, equals the enterprise value of the business.
Step 6: Derive Equity Value
The DCF produces enterprise value—the value of the business to all providers of capital. To arrive at equity value (the value to the shareholders), subtract the market value of any interest-bearing debt and add any excess cash or non-operating assets.
A Simplified DCF Example
Consider a business with the following characteristics:
Year 1 EBITDA: $500,000
Revenue growth: 10% annually for five years
EBITDA margin: 20%, stable
Depreciation: $50,000 annually
Capital expenditures: $60,000 annually
Working capital investment: 5% of incremental revenue
Tax rate: 25%
WACC: 18%
Terminal growth rate: 3%
The calculation proceeds as follows:
Forecast revenue and EBITDA for years 1 through 5.
Subtract depreciation, taxes, capital expenditures, and working capital investment to arrive at free cash flow for each year.
Calculate the terminal value using the year 5 free cash flow, the 3% terminal growth rate, and the 18% WACC.
Discount each year's cash flow and the terminal value back to present value.
Sum the present values to arrive at enterprise value.
The result will be a value that reflects both the near-term growth and the long-term sustainable earnings power of the business.
PART 4: THE COST OF CAPITAL FOR PRIVATE BUSINESSES
The discount rate is the most impactful and most scrutinized input in any income approach valuation. For a private business, a properly constructed discount rate reflects the specific risks of the business and the market's required return for bearing those risks.
Why Private Company Discount Rates Are So Much Higher
A small business buyer may put 80% to 100% of their wealth into a single company. They cannot diversify away the specific risks of that business. The Capital Asset Pricing Model, which assumes investors hold diversified portfolios, therefore understates the true required return for a private business.
This is why private company discount rates are dramatically higher than public company rates. The 2025 Pepperdine Private Capital Markets Survey, which tracks required rates of return across private capital markets, reported the following median required returns:
Angel investors: 38% to 35%
Venture capital: 28% to 35%
Private equity: 19% to 25%
Mezzanine funds: 17% to 19%
For Main Street businesses being sold to individual buyers, the appropriate discount rate is at the higher end of these ranges. An individual buying a $500,000 business and putting most of their net worth into that acquisition is effectively an angel investor in their own business. They should demand a return commensurate with that risk.
WACC for small to mid-size private businesses typically ranges from 15% to 25%, substantially higher than the 8% to 12% WACC observed for large public companies. A 1% change in WACC can shift a business's DCF value by 10% to 20% or more, making the WACC assumption one of the most consequential inputs in any valuation.
Building the WACC from Components
The WACC is not a number you guess or look up on a generic table. It is built from published risk premium data, using a structured methodology.
The standard approach uses the Build-Up Method, which constructs the cost of equity by adding risk premiums to a risk-free rate.
The yield on a long-term U.S. Treasury bond, typically the 20-year or 30-year Treasury. This represents the return an investor can earn with zero risk.
The additional return investors demand to invest in equities rather than risk-free bonds. Kroll (formerly Duff & Phelps) publishes widely accepted equity risk premium data. The long-term historical equity risk premium is approximately 5% to 6%.
Smaller companies are riskier than larger companies, and investors demand additional return to compensate for this risk. Kroll publishes size premium data based on market capitalization deciles. For a small private business, the size premium can be 5% to 10% or more.
Some industries are systematically riskier than others. Kroll publishes industry risk premiums based on the volatility of returns in each industry. A stable industry like utilities may have a negative industry risk premium. A volatile industry like technology or energy may have a positive premium.
This premium captures risks specific to the subject business that are not reflected in the other components. Factors include customer concentration, owner dependency, key employee risk, supplier concentration, regulatory risk, and financial leverage. For private businesses, a company-specific risk premium of 1% to 6% is commonly added to the CAPM cost of equity.
The Full Build-Up Example:
Assume a Main Street business with the following characteristics:
Risk-free rate (20-year Treasury): 4.5%
Equity risk premium: 5.5%
Size premium (micro-cap): 6.0%
Industry risk premium (construction): 1.0%
Company-specific risk (customer concentration, owner dependency): 5.0%
If the business has no debt, the WACC equals the cost of equity. If the business has debt, the after-tax cost of debt is weighted with the cost of equity based on the target capital structure.
Incorporating Debt into WACC:
For a business with $700,000 in equity value, $300,000 in debt, a 22% cost of equity, an 8% pre-tax cost of debt, and a 25% tax rate:
WACC = (70% × 22%) + (30% × 8% × (1 − 25%)) WACC = 15.4% + 1.8% = 17.2%
The Pepperdine Private Capital Markets Report
The Pepperdine Private Capital Markets Report is the most authoritative survey-based source for private company cost of capital. The report, produced annually by Pepperdine Graziadio Business School, surveys actual market participants—banks, private equity firms, venture capital funds, mezzanine lenders, and angel investors—to determine their required rates of return.
The cost of capital for privately held businesses varies significantly by capital type, size, and risk assumed. The Pepperdine data provides a market-based reality check on the discount rates derived from the build-up method. If the build-up method produces a 22% discount rate and the Pepperdine data shows that private equity firms are targeting 19% to 25% returns for similar businesses, the analysis is consistent with market evidence.
The Kroll Cost of Capital Navigator
The Kroll Cost of Capital Navigator (formerly Duff & Phelps) is the industry-standard tool for cost of capital data. It provides:
Equity risk premiums
Size premiums by market capitalization decile
Industry risk premiums by NAICS and SIC code
Risk-free rate data
Beta data by industry
For any valuation that will be scrutinized by a lender, a buyer's accountant, or a court, using Kroll data is the standard of practice.
PART 5: DCF VS. MARKET MULTIPLE — RECONCILIATION
The income approach (DCF or capitalization of earnings) and the market approach (multiples from comparable transactions) often produce different values. Reconciling these differences is a critical step in arriving at a defensible valuation conclusion.
Why DCF Values Often Exceed Market Multiple Values
A DCF almost always produces a higher value than the market multiple method when applied to the same business. This is not a flaw—it is a feature of the different perspectives each method represents.
The DCF captures the full future earnings potential of the business. It explicitly models growth, margin expansion, and the long-term cash flow stream. It answers the question: "What is this business worth based on its expected future performance?"
The market multiple reflects what buyers have actually paid for similar businesses. It is a reality check on what the market is willing to pay today. It answers the question: "What are buyers actually paying for businesses like this one?"
The Reconciliation Framework
When the DCF value and the market multiple value differ, the reconciliation should consider:
The quality and quantity of comparable transactions. If there are 25 recent transactions in the same industry and size range, the market multiple carries substantial weight. If there are only three loosely comparable transactions, the market multiple carries less weight.
The stability and predictability of earnings. For a stable, mature business, the market multiple is reliable. For a business in transition—growing rapidly, launching new products, or recovering from a downturn—the DCF better captures the true earnings potential.
The purpose of the valuation. For an SBA loan, the lender will focus on the market multiple and the ability of historical cash flow to service debt. For a strategic buyer, the DCF and synergy analysis will drive value.
The buyer universe. If the business will be marketed to individual buyers, the market multiple is the most relevant benchmark. If the business will be marketed to private equity firms or strategic acquirers, the DCF is more relevant.
Weighting the Approaches
A typical reconciliation for a Main Street business might weight the market multiple at 70% to 80% and the income approach at 20% to 30%. For a growing LMM business with limited comparable transactions, the weighting might be reversed—50% to 70% on the DCF and 30% to 50% on the market multiple.
The key is to be explicit about the weighting and the reasoning behind it. A valuation that simply averages two numbers without explanation is not defensible. A valuation that explains why one approach is more reliable for this specific business is credible.
PART 6: GLOBAL CONSIDERATIONS
United Kingdom and Europe
European valuation practice under International Valuation Standards (IVS) uses the same income approach principles. The capitalization of earnings method is common for small and medium-sized enterprises. DCF is standard for larger transactions.
The cost of capital in European markets reflects different risk-free rates (typically lower than U.S. Treasury yields), different equity risk premiums, and country-specific risk premiums for businesses operating in specific jurisdictions.
Australia and New Zealand
Australian practice follows similar principles. The capitalization of earnings method is widely used for small business valuations. The cost of capital reflects Australian government bond yields as the risk-free rate and Australian equity market data for the equity risk premium.
Canada
Canadian practice closely follows U.S. practice. The Build-Up Method using Kroll data is standard. The risk-free rate is based on Canadian government bond yields.
Asia-Pacific
In developed Asian markets like Singapore and Japan, the income approach is used for larger transactions. In emerging markets, the income approach is often the only viable method due to the scarcity of comparable transaction data. Discount rates in emerging markets are substantially higher to reflect country risk, currency risk, and political risk.
KEY TAKEAWAYS
The capitalization of earnings method (Value = Normalized Earnings ÷ Cap Rate) is the most commonly used income approach for Main Street and stable LMM businesses. The cap rate equals the discount rate minus the sustainable growth rate.
The multi-period DCF is appropriate for businesses with non-constant cash flows—growing businesses, businesses in transition, or businesses with a clear near-term trajectory that differs from the long-term trend.
Private company discount rates are substantially higher than public company rates. WACC for small to mid-size private businesses typically ranges from 15% to 25%, reflecting illiquidity, size, and company-specific risks.
A 1% change in WACC can shift a business's DCF value by 10% to 20% or more. The discount rate is the most consequential input in any income approach valuation.
The Pepperdine Private Capital Markets Report provides market-based required return data: angel investors 38% to 35%, venture capital 28% to 35%, private equity 19% to 25%.
The Build-Up Method constructs the cost of equity from the risk-free rate plus the equity risk premium, size premium, industry risk premium, and company-specific risk premium. Kroll is the authoritative data source.
DCF values almost always exceed market multiple values. Weight the market multiple more heavily for stable businesses with good comparable data. Weight the DCF more heavily for growing businesses where future earnings potential significantly exceeds current earnings.
Document every assumption. A defensible valuation requires a clear trail from data sources to conclusions. The discount rate, growth rate, and forecast assumptions must all be supported by evidence and reasoning.