Lesson 1 of 6
Clean surplus, and what breaks it
Equity should change by earnings less dividends. See a filed year where it does not, and name every line that took the difference.
By Javier Sanz
Founder of ValueScreener. Built Ninety Nine, a securities services provider, and sold it to a tier-one global bank; ran operations and internationalization at Alpaca, the brokerage API.
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In one minute
- Clean surplus says closing equity equals opening equity plus earnings minus what is paid out to owners.
- Every valuation method built on the accounts needs that relation to hold, because it is what stops earnings being counted twice or lost.
- Real filings break it in named places: other comprehensive income, buybacks, shares issued and stock compensation.
Clean surplus is one line of arithmetic: closing equity equals opening equity plus earnings, less anything paid out to owners. If it holds, the balance sheet and the income statement describe the same year without a gap. If it does not, something moved through equity without passing through profit, and the first job is to name it.
One filed year of equity, line by line
- Equity at 31 December 202424,856$m
- Net income+13,107$m
- Other comprehensive income+2,712$m
- Dividends paid−8,779$m
- Shares repurchased−746$m
- Shares issued+313$m
- Other, including stock compensation+706$m
- Equity at 31 December 2025= 32,169$m
The relation, written out
Read the figure with that formula in mind. Opening equity of 24,856 plus net income of 13,107 is 37,963. Dividends of 8,779 and buybacks of 746 come out, and 313 of newly issued shares goes back in. That path lands at 28,751, and the filed closing figure is 32,169. The gap is 3,418, and two lines carry it.
What took the difference
Finding the missing 3,418
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Start with the strict relation: opening equity, plus earnings, less payments to owners. That is 28,751.
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Add other comprehensive income of 2,712. Currency translation and pension and hedging gains land in equity without ever entering net income.
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Add the remaining 706, which is mostly stock compensation credited to equity during the year and other small equity movements.
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The two additions bring the total to 32,169, which is the filed figure, and the exercise is finished only when nothing is left over.
Why the leftover matters
Other comprehensive income is where clean surplus usually breaks, and it is not a rounding item. In fiscal 2024 the same company reported other comprehensive income of minus 2,568, so the swing between the two years is more than 5 billion dollars of equity that never appeared in either year's profit.
A valuation built on book value plus future earnings assumes every dollar of value created shows up once, in earnings. When a large amount runs around earnings, the assumption is wrong in a way that is measurable. The fix is comprehensive income, which is net income plus other comprehensive income, and the discipline is to say which of the two you used.
What you can and cannot conclude
A break in clean surplus is not a defect in the accounts. It is the rule working as written: translation differences and pension remeasurements are required to sit in other comprehensive income. The user of the numbers has the job of choosing a consistent measure of earnings and stating it.
The choice is not free either way. Net income is the figure every ratio in this academy is built on, and it is the one management is measured by, so using it keeps the valuation comparable with everything else you have computed. Other comprehensive income is real money to an owner, and leaving it out understates a bad currency year and flatters a good one. What is not defensible is switching between the two inside one model, or adding a book value that already contains accumulated other comprehensive income to an earnings stream that excludes it without saying so.
Check yourself
What does the clean surplus relation say?
- Closing equity equals opening equity plus revenue
- Closing equity equals opening equity plus earnings less what is paid out to owners
- Closing equity equals the market value of the company
Show the answer
Answer: B.
Clean surplus links the balance sheet to the income statement: equity changes only through earnings and transactions with owners.In the filed year above, which line carried most of the gap between the strict relation and the reported closing equity?
- Dividends paid
- Other comprehensive income
- Shares issued
Show the answer
Answer: B.
Other comprehensive income added 2,712 of the 3,418 gap. It is equity movement that never passes through net income.Why does a valuation built on the accounts care whether clean surplus holds?
- Because auditors require it
- Because value created outside earnings is either double counted or lost when book value and future earnings are added together
- Because it changes the dividend
Show the answer
Answer: B.
The method adds book value to future earnings above a charge. Anything that changes equity without passing through earnings breaks that addition unless it is named.Sources
- The Coca-Cola Company, Form 10-K for fiscal 2025, filed 2026-02-20, accession 0001628280-26-010047, and for fiscal 2024, filed 2025-02-20, accession 0000021344-25-000011. Figures read from the SEC XBRL company facts API on 2026-09-13.
- Penman, Financial Statement Analysis and Security Valuation, on the clean surplus relation as the condition accounting-based valuation requires.
What this leaves out
- The bridge uses the parent company's equity, so movements attributable to noncontrolling interests sit outside it.
- The 706 line is a residual made of stock compensation and other small equity movements. It is shown as one line because the filed detail behind it is not split here.
- Figures are in millions of dollars as filed, and a later restatement would change them.
- Nothing here is advice about any security.