Owner Earnings: Warren Buffett's Superior Measure of True Business Value
Reported earnings per share can be manipulated. EBITDA ignores capital intensity. Standard free cash flow formulas treat all capital expenditure equally. Warren Buffett recognized these shortcomings and in 1986 articulated a better measure — one that cuts through accounting noise to reveal what a business genuinely produces for its owners.
He called it owner earnings.
This guide explains the concept in full: where it came from, the exact formula, how it differs from FCF and EPS, the critical maintenance vs growth capex distinction, how to apply it to valuation using Buffett's own Coca-Cola framework, and the owner earnings yield as a practical stock comparison tool.
This article is for educational purposes only and does not constitute financial advice.
The 1986 Origin: Buffett's Annual Letter
In his 1986 letter to Berkshire Hathaway shareholders, Buffett addressed a question that accountants and investors had been confused about for decades: what does a business actually earn for its owners?
Buffett wrote:
"These represent (a) reported earnings plus (b) depreciation, depletion, amortization, and certain other non-cash charges…less (c) the average annual amount of capitalized expenditures for plant and equipment, etc. that the business requires to fully maintain its long-term competitive position and its unit volume."
He then added the critical qualifier about working capital changes. The resulting figure — owner earnings — is what a business owner actually takes home if they want the business to maintain its current earning power. Not more. Exactly that.
Buffett explicitly stated that owner earnings, not GAAP earnings or cash from operations, is the correct input for DCF valuation.
The Owner Earnings Formula
Owner Earnings = Net Income + D&A − Maintenance Capex ± Working Capital Changes
Breaking each component down:
Net Income
Start with GAAP reported net income. This is the accounting profit after all expenses, interest, and taxes.
+ Depreciation, Depletion, and Amortization (D&A)
Add back non-cash charges. D&A reduces reported earnings but does not reduce cash. The logic mirrors operating cash flow calculation in GAAP: adding back D&A removes the accounting fiction of asset value erosion that doesn't immediately require cash outflow.
− Maintenance Capex (the critical adjustment)
This is where owner earnings departs sharply from both reported earnings and standard free cash flow. Subtract only the capital expenditures required to maintain the existing earning power and competitive position of the business — not spending required for growth.
The distinction:
- Maintenance capex: Replacing aging machinery so production capacity stays flat. Upgrading software to maintain current functionality. Repainting stores to maintain customer experience. This spending is a real cost of keeping the business where it is.
- Growth capex: Building a new factory. Opening new locations. Launching a new product line. This spending is optional — it funds expansion, not maintenance.
GAAP does not distinguish between the two. Total capex in the cash flow statement combines maintenance and growth spending in a single line. Buffett's insight is that maintenance capex is functionally an operating expense that happens to flow through the balance sheet — it is unavoidable if the business is to retain its competitive position.
± Working Capital Changes
Adjust for changes in working capital. A business that requires growing working capital to support the same level of operations is consuming cash that never shows up as a capex line. Inventory buildup, receivables growth, and deferred payables all affect the actual cash available to owners.
Why Owner Earnings Is Better Than Reported EPS
The Problem with EPS
EPS is a pure accounting number. It:
- Includes D&A as an expense (often legitimate but sometimes economically irrelevant for asset-light businesses)
- Can be inflated by share buybacks that reduce the denominator without changing business value
- Ignores capex entirely — a company can report the same EPS whether it requires $0 or $500M in annual capital spending
- Does not adjust for accruals (reported profits can exceed cash generation for years)
Two companies reporting the same EPS can have wildly different economic realities if one requires heavy ongoing capital reinvestment and the other does not.
The Problem with EBITDA
EBITDA ("Earnings Before Interest, Taxes, Depreciation, and Amortization") is widely used in corporate finance and M&A. It strips out financing structure and non-cash charges. But it also strips out capex — which Buffett argued is the single most important adjustment to understand real cash earnings.
Charlie Munger famously called EBITDA "bullshit earnings." The reason: a capital-intensive business must spend heavily just to stay in place. Pretending capex does not exist dramatically overstates what's available to owners.
Standard Free Cash Flow
Standard FCF (CFO minus total capex) is closer to owner earnings but still imprecise because it subtracts all capex — including growth capex. A company aggressively reinvesting in expansion will show depressed FCF even if its maintenance cost base is low and its business economics are excellent.
Owner earnings isolates the baseline cash generation from the discretionary reinvestment decision.
Buffett's Coca-Cola Example
Coca-Cola is Buffett's archetypal owner earnings case. Berkshire began buying Coke in 1988 and has held it continuously since.
Coca-Cola's business model has several features that make owner earnings straightforward to calculate:
- Brand-based moat: The primary competitive asset is the Coca-Cola brand and bottler relationships, not physical capital. The factory machinery and distribution infrastructure require maintenance but are not the source of value.
- Low maintenance capex ratio: As a percentage of revenue, Coca-Cola's true maintenance capex has historically been modest. Most reported capex has been growth-oriented (new markets, new products, bottler infrastructure).
- Stable working capital: A mature, predictable business with consistent receivables and inventory cycles.
When Buffett calculated Coca-Cola's intrinsic value in 1988, he was essentially projecting owner earnings growing at a sustainable rate and discounting them back at his required return. The fact that Coca-Cola's stock-based "earnings" looked modest using standard metrics made the opportunity visible to investors focused on reported EPS rather than owner earnings.
The practical implication: companies with strong brands, recurring revenue, and low maintenance capex produce owner earnings that substantially exceed reported earnings. This gap is where value opportunities often hide.
Owner Earnings Yield: A Practical Comparison Tool
The owner earnings yield makes cross-stock comparison straightforward:
Owner Earnings Yield = Owner Earnings Per Share ÷ Share Price
Or equivalently:
Owner Earnings Yield = Total Owner Earnings ÷ Market Capitalization
This is the owner earnings version of the earnings yield (E/P ratio). It answers: for every dollar invested in this company today, how many cents per year does the business produce for me in genuine owner-available cash?
A company with $100M in owner earnings and a $1B market cap has a 10% owner earnings yield — roughly equivalent to buying a bond that pays 10% annually, with the additional upside of potential earnings growth.
Comparing owner earnings yield across industries, or against the 10-year Treasury yield, gives a fast read on relative value without the distortions of reported EPS or EBITDA multiples.
The Maintenance vs Growth Capex Split: The Practical Challenge
The biggest practical difficulty with owner earnings is that companies do not report maintenance and growth capex separately. They report total capex as a single line on the cash flow statement.
Several approaches to estimating maintenance capex:
Method 1: Management Guidance
Some companies disclose maintenance vs growth capex in earnings calls, investor presentations, or annual reports. This is the most reliable source when available.
Method 2: Depreciation as a Proxy
In a steady-state, asset-base-replacement-only business, maintenance capex should roughly equal depreciation over time. Using D&A as a proxy for maintenance capex produces a conservative owner earnings estimate. This is the simplest approach and often directionally accurate.
Method 3: Industry Peer Comparison
Compare the company's capex-to-revenue or capex-to-assets ratio against peers. If the company spends significantly more than industry peers, the excess likely reflects growth spending. The peer-average ratio approximates maintenance spending.
Method 4: Multi-Year Trend Analysis
In years with no revenue or volume growth, nearly all capex is maintenance. Identifying maintenance-only periods in the company's history provides a baseline.
No method is exact. Owner earnings estimates always involve judgment. The goal is not precision — it is a better approximation of reality than reported earnings or standard FCF.
Limitations of Owner Earnings
- Maintenance vs growth capex split is subjective. Different analysts will estimate this differently for the same company, leading to a range of owner earnings estimates rather than a single number.
- Not disclosed in financial statements. There is no GAAP line for owner earnings. It requires manual calculation.
- Less useful for asset-light businesses. For software companies or asset-light businesses with minimal capex, owner earnings and reported FCF converge. The distinction matters most for capital-intensive industries.
- Working capital changes can be volatile. Year-to-year working capital swings can distort single-year owner earnings. Use 3–5 year averages for valuation purposes.
How to Calculate Owner Earnings with ValueMarkers
ValueMarkers provides an owner earnings calculator that automatically pulls the required inputs from financial statements and computes owner earnings with multiple capex estimation methods. The tool shows:
- Trailing twelve-month owner earnings
- 5-year owner earnings trend
- Owner earnings yield vs current price
- Comparison against reported FCF and EPS
Use the ValueMarkers owner earnings calculator to analyze any public company and compare it against how the stock market is pricing reported earnings.
Summary
Owner earnings is Buffett's answer to a simple question: what does the business actually produce for its owners? The formula adjusts reported earnings for non-cash charges and strips out capital spending that merely maintains — rather than grows — the business.
Owner Earnings = Net Income + D&A − Maintenance Capex ± Working Capital Changes
The key insight: maintenance capex is a real recurring cost, not an optional cash flow. Companies that require heavy ongoing capital reinvestment produce less for owners than their reported earnings suggest. Companies with durable moats, low maintenance capex requirements, and growing earnings power produce substantially more.
That gap between reported metrics and true owner earnings is precisely where Buffett has found his greatest investment opportunities for six decades.
All content is for educational purposes only. This is not financial advice. Always conduct your own due diligence before making investment decisions.