COST · Consumer staples(retail-variety stores) · 10 years of annual accounts filed with the SEC · latest fiscal year ended 2025-08-31
Costco Wholesale Corp reported revenue of $275.2 billion in fiscal 2025, after growing 9.8% a year over the previous 9 years. Its operating margin held steady at about 3.8% from 2016, and it earned 22.2% on its invested capital in the latest year. Of the $83.1 billion its operations generated over 10 years, 43.2% went back into the business and 33.2% to dividends. On the accounting screens, it passes 6 of 9 Piotroski tests, its Altman Z'' of 2.61 is in the safe zone and its Beneish M-score is below the -1.78 line; none of the six cross-checks between its statements fires.
Revenue, fiscal 2025275.2B+9.8% a year over 9 years
Operating margin3.8%gross margin 12.8%
Return on invested capital22.2%21.4% on average over 5 years
Free cash flow after stock pay7.0B2.5% of revenue
Net debt ÷ EBITDANet cash8.4B more cash than debt
Piotroski F-score6/9tests of improvement passed
Is it growing?
Revenue and the operating income it turns into. Growth that does not reach operating income is growth bought with margin.
RevenueOperating income
0100.0B200.0B300.0B
2016Revenue 118.7BOperating income 3.7B
2017Revenue 129.0BOperating income 4.1B
2018Revenue 141.6BOperating income 4.5B
2019Revenue 152.7BOperating income 4.7B
2020Revenue 166.8BOperating income 5.4B
2021Revenue 195.9BOperating income 6.7B
2022Revenue 227.0BOperating income 7.8B
2023Revenue 242.3BOperating income 8.1B
2024Revenue 254.5BOperating income 9.3B
2025Revenue 275.2BOperating income 10.4B
2016201720182019202020212022202320242025
Compound growth a year
3 yrs
5 yrs
9 yrs
Revenue
+6.6%
+10.5%
+9.8%
Operating income
+10.0%
+13.8%
+12.2%
Net income
+11.5%
+15.1%
+14.7%
Earnings per share
+11.5%
+15.1%
+14.6%
Free cash flow per share
+30.8%
+5.3%
+31.9%
Dividend per share
+13.4%
+8.1%
+12.6%
Shares
+0.0%
+0.0%
+0.1%
Falling shares are buybacks: each remaining share owns more of the company.
Does it earn more than its capital costs?
Margins say how much of each sale is kept; return on invested capital says how much the business earns on the money it needs to operate. Growth only creates value when that return is above the cost of the capital.
Return on invested capitalCost of capital today · 9.1%
0.0%10.0%20.0%30.0%
2016Return on invested capital 14.0%
2017Return on invested capital 15.8%
2018Return on invested capital 16.5%
2019Return on invested capital 16.7%
2020Return on invested capital 15.9%
2021Return on invested capital 20.4%
2022Return on invested capital 21.6%
2023Return on invested capital 19.1%
2024Return on invested capital 23.8%
2025Return on invested capital 22.2%
2016201720182019202020212022202320242025
Economic profit
Economic profit
02.0B4.0B6.0B
2016Economic profit 835.7M
2017Economic profit 1.2B
2018Economic profit 1.4B
2019Economic profit 1.7B
2020Economic profit 1.7B
2021Economic profit 2.8B
2022Economic profit 3.4B
2023Economic profit 3.1B
2024Economic profit 4.3B
2025Economic profit 4.6B
2016201720182019202020212022202320242025
(return on capital − cost of capital) × capital invested: the profit left after paying for the money used. Today's cost of capital is applied to every year, since a past one cannot be rebuilt honestly.
Return on equity
27.8%
Return on assets
10.5%
Asset turnover
3.57×
Overheads (SG&A)
9.1% of revenue
Is the profit cash, and where does the cash go?
Net income is an accounting opinion; free cash flow is what was left in the bank after investing. Stock-based pay does not leave the bank — shareholders pay it through dilution — so it is shown taken off as well.
Net incomeFree cash flowAfter stock-based pay
02.5B5.0B7.5B10.0B
2016Net income 2.4BFree cash flow 643.0MAfter stock-based pay 184.0M
2017Net income 2.7BFree cash flow 4.2BAfter stock-based pay 3.7B
2018Net income 3.1BFree cash flow 2.8BAfter stock-based pay 2.3B
2019Net income 3.7BFree cash flow 3.4BAfter stock-based pay 2.8B
2020Net income 4.0BFree cash flow 6.1BAfter stock-based pay 5.4B
2021Net income 5.0BFree cash flow 5.4BAfter stock-based pay 4.7B
2022Net income 5.8BFree cash flow 3.5BAfter stock-based pay 2.8B
2023Net income 6.3BFree cash flow 6.7BAfter stock-based pay 6.0B
2024Net income 7.4BFree cash flow 6.6BAfter stock-based pay 5.8B
2025Net income 8.1BFree cash flow 7.8BAfter stock-based pay 7.0B
2016201720182019202020212022202320242025
Where 10 years of operating cash went, 2016–2025
83.1B generated by the business. Each band is its share of that total.
Reinvested in the business 43%35.9B
Acquisitions 0%0
Dividends 33%27.6B
Share buybacks 6%4.9B
Kept, or used to pay down debt 18%14.6B
Over the same years it paid 6.6B in stock. The share count rose 0.8%. The buybacks did not even cover what was handed out in stock.
Per share
Earnings per shareFree cash flow per shareDividend per share
$0.00$10.00$20.00$30.00
2016Earnings per share $5.33Free cash flow per share $1.46Dividend per share $1.69
2017Earnings per share $6.08Free cash flow per share $9.58Dividend per share $8.85
2018Earnings per share $7.09Free cash flow per share $6.35Dividend per share $1.56
2019Earnings per share $8.26Free cash flow per share $7.58Dividend per share $2.34
2020Earnings per share $9.02Free cash flow per share $13.63Dividend per share $3.33
2021Earnings per share $11.27Free cash flow per share $12.09Dividend per share $12.94
2022Earnings per share $13.14Free cash flow per share $7.87Dividend per share $3.37
2023Earnings per share $14.16Free cash flow per share $15.18Dividend per share $2.81
2024Earnings per share $16.56Free cash flow per share $14.90Dividend per share $20.33
2025Earnings per share $18.21Free cash flow per share $17.62Dividend per share $4.91
2016201720182019202020212022202320242025
Shares outstanding
Diluted shares
440.0M441.0M442.0M443.0M444.0M445.0M
2016Diluted shares 441.3M
2017Diluted shares 440.9M
2018Diluted shares 441.8M
2019Diluted shares 442.9M
2020Diluted shares 443.9M
2021Diluted shares 444.3M
2022Diluted shares 444.8M
2023Diluted shares 444.5M
2024Diluted shares 444.8M
2025Diluted shares 444.8M
2016201720182019202020212022202320242025
How strong is the balance sheet?
Debt is not bad in itself; debt the business cannot service in a bad year is. Net debt is debt minus cash, and below zero the company holds more cash than it owes.
Net debt
-10.0B-5.0B05.0B
2016Net debt 1.8B
2017Net debt 2.1B
2018Net debt 522.0M
2019Net debt -1.6B
2020Net debt -4.7B
2021Net debt -3.8B
2022Net debt -3.6B
2023Net debt -7.2B
2024Net debt -4.0B
2025Net debt -8.4B
2016201720182019202020212022202320242025
Net debt ÷ EBITDA
-0.7×
Interest coverage
67× operating income ÷ interest
Current ratio
1.03 current assets ÷ current liabilities
Cash conversion cycle
2 days collects in 4d, stock 28d, pays in 30d
Three classic screens of the accounts
Each asks a different question of the same statements — is it improving, does it look like a company heading for distress, do the accounts resemble ones that were manipulated. None is a verdict; each shows what moves it.
Piotroski F-score
Is the business improving? Nine yes-or-no tests, this year against last.
6of 9 tests passed
✓ProfitableReturn on assets above zeropassed
✓Cash from operationsOperating cash flow above zeropassed
✕Profitability improvedReturn on assets higher than a year beforefailed
✓Profit backed by cashOperating cash flow above net income (low accruals)passed
✓Less long-term debtLong-term debt as a share of assets fellpassed
✓More liquidCurrent ratio higher than a year beforepassed
✕No new sharesShare count did not growfailed
✓Better gross marginGross margin higher than a year beforepassed
✕Sells more per assetAsset turnover higher than a year beforefailed
Where it misleads: it measures change, not level. An excellent business that stood still for a year scores low; a poor one recovering from a disaster scores high.
Altman Z''-score
Does the balance sheet look like those of companies that went bankrupt?
2.61safe zone
1.12.6
Working capital ÷ assets 0.02 × 6.56+0.11
Retained earnings ÷ assets 0.29 × 3.26+0.96
Operating income ÷ assets 0.13 × 6.72+0.90
Equity ÷ liabilities 0.61 × 1.05+0.64
Where it misleads: buybacks. A company that returns so much cash that its equity turns small or negative sinks the last two ratios without being anywhere near bankruptcy. Banks and insurers do not fit the model at all.
Beneish M-score
Do the accounts resemble those of companies that manipulated their earnings?
-2.66below the -1.78 line
-1.78
Receivables vs sales 1.09+1.00
Gross margin slipping 0.98+0.52
Soft assets 0.94+0.38
Sales growth 1.08+0.96
Slower depreciation 1.01+0.12
Overheads vs sales 1.01-0.17
Profit not in cash -0.07-0.32
Leverage rising 0.94-0.31
Where it misleads: fast growth and acquisitions. Sales growth carries a heavy weight, so a company growing 50% a year scores like a suspect without having done anything. It is a screen from a 1999 study, not an accusation.
Where the statements disagree
Cross-checks between the income statement, the balance sheet and the cash flow for the latest year, each with the benign reading and the worrying one.
None of the six cross-checks fires for the latest year: receivables and inventory move with revenue, profit turns into cash, investment keeps up with depreciation, the tax rate is ordinary and debt is moderate.
What is it worth, under which assumptions?
A company is worth the cash it will generate, brought back to today. This model projects revenue with growth that fades over the years, applies a free cash flow margin, and discounts the result at the cost of capital. Every assumption says where it came from, and all of them can be changed.
Value per share, with these assumptions$213.63discounted at 9.1% a year · 56% of it from after year 10
Type a share price on the left to ask the reverse questions: what growth, what margin or what discount rate that price implies.
What the value implies, in the usual multiples
At this model's value
Price ÷ earnings
11.7×
Enterprise value ÷ EBITDA
6.8×
Enterprise value ÷ revenue
0.3×
Free cash flow yield
7.3%
From cash flows to a value per share
10 years of cash flow, today37.9B
Everything after, today48.7B
The whole business86.6B
Plus net cash8.4B
What belongs to shareholders95.0B
Divided among 444.8M shares: <strong>$213.63</strong> each.
The projection next to its history
Reported free cash flow after stock pay, then the model's. A projection that looks nothing like the past needs a reason.
ReportedProjected
02.0B4.0B6.0B8.0B
2016Reported 184.0M
2017Reported 3.7B
2018Reported 2.3B
2019Reported 2.8B
2020Reported 5.4B
2021Reported 4.7B
2022Reported 2.8B
2023Reported 6.0B
2024Reported 5.8B
2025Reported 7.0B
2026Projected 4.5B
2027Projected 4.9B
2028Projected 5.3B
2029Projected 5.7B
2030Projected 6.1B
2031Projected 6.5B
2032Projected 6.8B
2033Projected 7.1B
2034Projected 7.4B
2035Projected 7.6B
2016201820202022202420262028203020322034
Year by year
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
Revenue
304.1B
333.4B
362.4B
390.8B
418.0B
443.3B
466.2B
486.1B
502.6B
515.2B
Growth
10.5%
9.6%
8.7%
7.8%
6.9%
6.1%
5.2%
4.3%
3.4%
2.5%
Cash margin
1.5%
1.5%
1.5%
1.5%
1.5%
1.5%
1.5%
1.5%
1.5%
1.5%
Free cash flow
4.5B
4.9B
5.3B
5.7B
6.1B
6.5B
6.8B
7.1B
7.4B
7.6B
Worth today
4.1B
4.1B
4.1B
4.0B
4.0B
3.9B
3.7B
3.5B
3.4B
3.2B
If the least-known inputs move
Value per share as two inputs change at a time. Neighbouring cells that differ a lot are the conclusion: the value depends on numbers nobody knows to a point.
The discount rate and growth forever
discount ↓ · forever →
1.5%
2.0%
2.5%
3.0%
3.5%
8.1%
220
234
250
269
292
8.6%
205
217
230
246
264
9.1%
193
202
214
227
242
9.6%
181
190
199
210
223
10.1%
171
179
187
196
207
Year-one growth and the final margin
margin ↓ · growth →
6.5%
8.5%
10.5%
12.5%
14.5%
1.2%
158
170
182
196
210
1.3%
171
184
198
213
229
1.5%
184
198
214
230
248
1.6%
197
212
229
246
265
1.8%
210
227
244
264
284
All the inputs moving at once
5,000 valuations, each with growth, final margin, discount rate and growth forever drawn at random around the values on the left (spreads of 3.0%, 2.0%, 1.0% and 0.5%). Not a probability — the spreads are assumptions too — but an honest picture of how wide the answer is.
10th percentile$-54.40
Median$214.85
90th percentile$515.01
$0.00$500.00
Half of the simulations land between <b>$76.16</b> and <b>$366.63</b>; one in ten below $-54.40, one in ten above $515.01.
Does the long run make sense?
4.9×The terminal value prices the business in year 10 at 4.9 times that year's EBITDA.
5%To grow 2.5% forever while reinvesting 48% of its after-tax operating profit, the business must earn 5% on the new capital — it has earned 21% on average over the last five years.
56%of the value comes from after year 10. The more of it, the more the answer depends on the part nobody can see.
Accounts from the company's own SEC filings; lines some companies do not report are shown as a dash rather than estimated. The risk-free rate is the 10-year US Treasury yield. A DCF is a way of making assumptions explicit, not a forecast: it states what the company would be worth if the assumptions held. The scores are screens that point where to look, not verdicts. Nothing here is a recommendation to buy or sell.