⚠ The People Inside the Buildings Cost More Every YearModerate threat

Walmart (WMT) — threat to the moat

At four cents on the dollar there is no version of this business where labour inflation is a second-order concern.

A store is a building full of employees, and Walmart has 2.1 million of them1. That is the largest private payroll on earth, and it is the line where a fixed-cost advantage quietly turns into a fixed-cost exposure.

The payroll, and what a point of it costs2.1massociatesworldwide1.6min the United States$147.9bnoperatingexpenses FY2026-72bpWalmart U.S.expenseleverage, Q2A 1% overrun on the expense line is about $1.5bn, roughly 5% of operating profit.
The largest private payroll on earth, carried on a four per cent margin. Claims, depreciation and healthcare costs deleveraged expenses by 72 basis points in the June quarter.

The June 2026 quarter showed the mechanism without any interpretation required. Walmart U.S. operating expenses deleveraged 72 basis points, and the company named three causes: higher claims expense, higher depreciation, and higher associate healthcare costs2. Not one of those is discretionary, and two of them scale with the number of people rather than with sales.

The arithmetic is unforgiving at a 4.2% operating margin. Total operating, selling, general and administrative expense was $147,943 million in fiscal 20263; a one per cent overrun on that line is $1,479 million, about five per cent of operating profit. There is no version of this business where labour cost inflation is a second-order concern.

The defence is automation, and Walmart is spending accordingly. But automation removes hours from distribution centres more readily than from a supercenter, where the work is stocking shelves, staffing pharmacies, checking out customers and — increasingly — walking the aisles picking somebody's online order. Store-fulfilled eCommerce, the thing that makes the estate valuable, is labour that did not exist ten years ago.

There is also a political dimension no forecast can price. A company that employs 1.6 million Americans is a permanent subject of minimum-wage legislation, scheduling rules, healthcare mandates and union organising, and it has less room to absorb any of them than a retailer earning three times its margin.

Watch the gap between net sales growth and operating expense growth at Walmart U.S. It was negative 72 basis points in the June quarter. Two or three more quarters like that would erase the entire benefit of the advertising business.

References
  1. ReportedA store is a building full of employees, and Walmart has 2.1 million of them.
    Walmart Form 10-K, fiscal year ended January 31, 2026 - Item 1 Business and Item 2 Properties (approximately 280 million customers a week across more than 10,900 stores in 19 countries; 2.1 million associates, 1.6 million in the U.S.; 4,611 Walmart U.S. retail units of which 3,728 owned, 601 Sam's Clubs of which 464 owned, 5,743 international stores of which 1,486 owned; 3,566 supercenters at 633,724 thousand square feet, 351 discount stores at 36,609, 694 neighborhood markets and small formats at 36,609/28,375 with a 42,000 average; 192 U.S. and 179 international distribution facilities, 149 owned; pickup and delivery at over 8,400 locations globally; EDLP and EDLC; private brands; competition; Flipkart and PhonePe majority stakes in 2018) — FY2026 (ended January 31, 2026) · publ. March 13, 2026 · source ↗
  2. ReportedWalmart U.S. operating expenses deleveraged 72 basis points, and the company named three causes: higher claims expense, higher depreciation, and higher associate healthcare costs.
    Walmart second-quarter fiscal 2027 earnings release (Form 8-K exhibit 99.1) - revenue $187.9 billion +5.9% and +5.1% in constant currency; operating income +28.8% and +17.4% adjusted in constant currency; global eCommerce +23%; global advertising +38% with Walmart Connect excluding VIZIO +43%; membership fee revenue +17%; gross profit rate +96 basis points and Walmart U.S. +158; Walmart U.S. comp sales +2.6% and operating income +20.6% with operating expenses deleveraged 72 basis points; Sam's Club operating income +44.3% and International +16.6%; ROA 8.0% and ROI 15.4%; free cash flow $5.5 billion; 42.3 million shares repurchased for $5.1 billion year to date; FY27 guidance of 4.0-5.0% net sales growth, 7.0-8.5% adjusted operating income growth and $2.80-$2.87 adjusted EPS — Q2 FY2027 · publ. August 20, 2026 · source ↗
  3. Moat Explorer calcTotal operating, selling, general and administrative expense was $147,943 million in fiscal 2026; a one per cent overrun on that line is $1,479 million, about five per cent of operating profit.
    Moat Explorer calculation from figures in Walmart's own filings: global eCommerce of about $150.4 billion (Walmart U.S. $99.6B + International $35.8B + Sam's Club $15.0B) against $120.9 billion, a $29.5 billion increase against a $31,875M rise in net sales ($706,413M against $674,538M), about 92%; Walmart U.S. selling floor of 698.7 million square feet (633,724 + 36,609 + 28,375 thousand) and net sales per store of $104.7 million ($482,975M over 4,611 stores); operating margin 4.18% ($29,825M/$713,163M) against 4.31% ($27,012M/$648,125M); net margin 3.07%; gross profit rate 24.2% ($171,018M/$706,413M); grocery 59.1% of Walmart U.S. net sales ($285,482M/$482,975M) against 59.8% ($264,210M/$441,817M) and grocery growth of 3.4%; general merchandise to grocery ratio 0.40 against 0.43; health and wellness +26.7% ($54,898M to $69,547M); payables less inventories $4,210M ($63,061M less $58,851M); rent 0.34% of revenue ($2,434M/$713,163M); capital expenditure 64% of operating cash flow ($26,642M/$41,565M); a 1% overrun on $147,943M of expense is $1,479M; eCommerce penetration 27.5% international ($35.8B/$130,423M) and 20.6% at Walmart U.S. ($99.6B/$482,975M); shareholder returns $15,587M ($7,507M dividends plus $8,080M repurchases) against $14,923M of free cash flow; Q2 FY2027 net income attributable down 9.4% ($6,366M against $7,026M); Walmart U.S. comparable sales of about 3.9% excluding the 125 basis point pharmacy headwind — FY2024-Q2 FY2027 · publ. September 2026 · source ↗
Sources
Generated September 22, 2026