Owner Earnings Explained (Buffett's Preferred Metric)

Owner earnings is Warren Buffett’s measure of the true cash a business generates for its owners. It starts with reported net profit, adds back non-cash charges like depreciation, then subtracts the capital spending genuinely needed to maintain the business. The result is a more honest picture of distributable cash than accounting earnings, and a sounder base for valuation.

Where this fits: owner earnings is the cash measure behind the fifth of the Five Criteria. It refines free cash flow and reflects the thinking in Warren Buffett’s investment strategy.

Reported profit is an opinion dressed as a fact. It is the end of a long chain of accounting judgements — depreciation schedules, provisions, amortisation — and it tells you surprisingly little about the cash a business actually puts in its owners’ pockets. Warren Buffett has long argued that the number that matters is something he calls owner earnings, and understanding it changes how you value a company.

Where the idea comes from

Buffett set out the concept in his 1986 letter to Berkshire Hathaway shareholders. His argument, in essence, was that accounting earnings are not the relevant figure for valuation. What an owner should care about is the cash the business can distribute after reinvesting enough to maintain its competitive position and its sales volumes.

He defined owner earnings, loosely, as reported earnings plus depreciation, depletion, amortisation and certain other non-cash charges, less the average annual capital expenditure the business requires to maintain its long-term competitive position and unit volume. Where working capital needs change materially, those too should be reflected.

The phrasing is careful, and the careful bit is “maintain”. Not grow — maintain. That single word is what separates owner earnings from both reported profit and cruder cash measures.

The formula

Put simply:

Owner earnings = net profit + depreciation, amortisation and other non-cash charges − maintenance capital expenditure (± changes in working capital)

Each adjustment corrects a flaw in reported profit.

• Adding back depreciation and amortisation removes non-cash charges that reduced profit without any money leaving the business. These are accounting allocations of money spent in the past.
• Subtracting maintenance capital expenditure reintroduces the real, recurring cash a business must spend to keep its factories, fleet, stores or systems in working order. This is the cost of simply staying in the game, and it is very real.
• Adjusting for working capital captures cash tied up in, or released from, inventory and receivables as the business operates.

The genius of the measure is in how it handles capital spending. Reported profit buries this cost inside depreciation, which reflects historical spending rather than what the business must spend now. Owner earnings replaces the accounting figure with an economic one.

Why it beats reported earnings

Consider a hypothetical comparison, invented for illustration. Two companies each report £100m of net profit.

	Company A	Company B
Reported net profit	£100m	£100m
Depreciation added back	£40m	£40m
Maintenance capex	£20m	£70m
Owner earnings	£120m	£70m

On reported profit, the two look identical. On owner earnings, Company A produces far more real cash for its owners, because Company B must plough most of its profit straight back into simply maintaining its asset base. Company B is a far worse business for an owner, yet the income statement conceals it entirely.

This is precisely the distortion that catches investors who rely on earnings or on EV/EBITDA, which ignores capital spending altogether. Owner earnings is built to expose it. It also connects to the broader lesson that free cash flow matters more than profit and that the cash flow statement deserves more attention than the headline earnings line.

The relationship to free cash flow

Owner earnings is a close relative of free cash flow. The usual difference is subtle but important: standard free cash flow subtracts all capital expenditure, while owner earnings subtracts only the maintenance portion.

Why does this matter? Because growth capital spending is discretionary and value-creating, not a cost of survival. A company investing heavily to expand might show weak free cash flow while its underlying maintenance needs are modest. Owner earnings tries to isolate the cash the business throws off once you strip out the spending it chooses to make to grow. For a business in an aggressive expansion phase, owner earnings can be a truer guide to its underlying earning power than reported free cash flow.

In many steady businesses the two measures converge, and either serves. The distinction matters most for companies spending heavily on growth.

The hard part: estimating maintenance capex

Here is the catch, and it is a real one. Companies report total capital expenditure, but they almost never break it into maintenance and growth. That split is the crux of owner earnings, and it requires judgement.

Several rough approaches help:

• Use depreciation as a floor. Over the long run, maintenance capex and depreciation tend to track each other, since both reflect the cost of using up assets. Depreciation is a reasonable starting estimate for maintenance needs.
• Study the capex-to-revenue trend. In years of flat revenue, most capex is likely maintenance. In years of rapid expansion, the excess over the steady-state level is likely growth.
• Apply industry knowledge. A software firm’s maintenance needs are tiny; a railway’s are enormous. Understanding the business tells you where the number should sit.
• Read management’s own commentary. Some companies discuss maintenance versus growth spending in their annual report, which is worth hunting for.

None of these is exact. The honest position is that owner earnings is an estimate, not a precise figure. Buffett himself acknowledged that it does not yield the deceptively precise numbers accounting provides — and he argued that a roughly right measure of the right thing beats a precisely wrong measure of the wrong thing.

How to use it within the Five Criteria

Owner earnings is the cash foundation for the price test. Put it to work like this:

1. Build it carefully. Start from net profit, add back non-cash charges, and subtract your best estimate of maintenance capex. Document the assumptions so you can revisit them.
2. Compare it with reported profit. A large gap — owner earnings well below net profit — flags a capital-hungry business whose earnings overstate its real worth. The reverse can flag a hidden cash machine.
3. Use it as the base for valuation. Owner earnings is a better input to a discounted cash flow than accounting profit, because it reflects distributable cash. An owner-earnings yield (owner earnings divided by market cap) is a sterner version of the earnings yield.
4. Combine with quality. High and stable owner earnings alongside a durable moat and high returns on capital is the profile of a business worth owning.
5. Demand a margin of safety. Because owner earnings rests on estimates, buy well below the value it implies. That buffer is your margin of safety.

Owner earnings will never give you the clean, single number that reported profit appears to. That is the point. It trades false precision for honest approximation — and in valuation, being approximately right about the real cash a business produces beats being exactly right about an accounting fiction.

Frequently Asked Questions

What is the owner earnings formula? Owner earnings equals reported net income plus depreciation, amortisation and other non-cash charges, minus the annual capital expenditure required to maintain the business’s competitive position and unit volumes. Buffett also noted you should adjust for changes in working capital where material.

How is owner earnings different from free cash flow? They are close cousins. Free cash flow typically subtracts all capital expenditure, while owner earnings subtracts only maintenance capex — the spending needed to sustain the business, not to grow it. In practice the two converge, and both aim to measure real distributable cash rather than accounting profit.

Why did Buffett prefer owner earnings to reported earnings? Because reported earnings include non-cash charges and ignore the real cash a business must reinvest just to stand still. Two companies can report identical profits while one gushes cash and the other consumes it in capital spending. Owner earnings reveals that difference; reported profit hides it.

What is the hardest part of calculating owner earnings? Estimating maintenance capital expenditure. Companies report total capex but rarely split it between maintenance and growth. You have to estimate the maintenance portion using depreciation as a rough guide, industry knowledge and the trend in capital spending versus revenue. This judgement is where most of the work lies.

Your Next Step

Owner earnings is the cash truth behind the accounts. Build on it with the wider cash-flow toolkit.

• Start with what free cash flow is and why it matters more than profit.
• See how Buffett thinks in Warren Buffett’s investment strategy.
• Turn owner earnings into a valuation with the DCF intrinsic value calculator.

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About the author: Cameron Hayes is a senior investor relations and finance professional who has worked in IR at Nasdaq Copenhagen-listed companies including Nilfisk and Maersk Drilling. He holds an MSc from Copenhagen Business School and a BCom from the University of Ottawa, and founded Gingernomics to teach individual investors the Five Criteria framework. More about Gingernomics.

The content on Gingernomics is for educational and informational purposes only and does not constitute financial advice. Always do your own research and consult a licensed financial advisor before making any investment decisions. Past performance is not indicative of future results.