Costco Had a Good Quarter. Americans Are Having a Rough One.

Costco Wholesale reported fiscal third-quarter results on May 28, 2026, and the numbers look solid on the surface. $70.53 billion in total revenue, beating Wall Street's estimate of $69.81 billion, according to LSEG data compiled by CNBC. Net income hit $2.19 billion, or $4.93 per diluted share — up 15% from $1.9 billion the prior year.

The mainstream coverage keeps burying the key detail until much later in the story.

The Real Driver: $4.42 Gas

Costco's record gas volumes aren't a feel-good business story. They're a distress signal.

The national average for gasoline is $4.42 per gallon — up 25 cents in a single month, and up from $3.16 a year ago, according to the American Automobile Association. That's a 40% spike in 12 months. Consumers aren't flocking to Costco pumps because times are good. They're doing it because they're desperate to save money anywhere they can.

CEO Ron Vachris confirmed it on the May 28 earnings call: all three four-week fiscal periods of the quarter set successive all-time company gas volume records, with the final five weeks becoming the top five highest-volume weeks in company history. Some high-traffic locations required multiple daily fuel deliveries just to keep up, according to CNBC.

Record gas volumes at a warehouse club are not a normal retail victory. Consumers are choosing the cheapest option available because they have to.

What's Driving the Price Pain

Vachris attributed the fuel price surge directly to the war in the Middle East, specifically the Iran conflict causing supply disruptions. War in one of the world's key oil-producing regions translates directly into what Americans pay at the pump every single week.

The mainstream coverage — CNBC included — mentions the Iran war in passing. American families are paying roughly $50 more to fill a 40-gallon tank than they were a year ago. That's a family budget crisis playing out in real time.

Membership Numbers: Good, Not Great

Total paid memberships reached 82.9 million, up 4.1% year over year, according to the Motley Fool's earnings transcript. The U.S. and Canada membership renewal rate ticked up 10 basis points sequentially to 92.2%. Worldwide renewal held at 89.7%.

CFO Gary Millerchip noted that gas-station users are renewing memberships at higher rates and spending more overall. "They are spending more with us overall, and they are also renewing at a higher rate," Millerchip told analysts.

Membership fee income grew 10.7% to $1.37 billion, narrowly beating FactSet estimates of $1.36 billion. Paid executive memberships hit 41.2 million, up 9.6%.

CNBC's investing commentary noted paid member count came in slightly short of expectations at 82.9 million. The stock barely moved after hours, and it's already down roughly 9% from its 52-week high of $1,096, hit on May 19.

Tariff Refunds: Don't Hold Your Breath

Costco is in the middle of a tariff refund dispute following a Supreme Court decision that invalidated some of President Donald Trump's import levies.

Vachris said the company has begun submitting refund claims to U.S. Customs and Border Protection, and expects processing over the next 2-3 months on a rolling basis, according to the earnings transcript from the Motley Fool. Costco previously pledged to pass savings on to members if refunds come through.

The Globe and Mail flagged something important: those tariff refunds won't directly help Costco's bottom line. Any refunds flow back to members, not shareholders. That's good for the consumer — eventually — but investors shouldn't model it as an earnings windfall.

The legal and timing outcomes remain uncertain. Vachris said the "ultimate member return" is "contingent on legal and timing outcomes." That's lawyer-speak for "we don't know yet."

What the Numbers Don't Show

Digital sales were up 21.5%, site and app traffic rose 37%, and same-day delivery is averaging under 45 minutes in the U.S. with a 4.8-out-of-5 member satisfaction rating, per the Motley Fool transcript. Personalized recommendations alone contributed nearly $5 billion in e-commerce sales.

Top sales categories included pharmacy, home furnishings, and gold and jewelry — according to CNBC. Gold and jewelry making the top-sellers list signals something about consumer confidence. People buying gold in bulk at a warehouse store don't trust the dollar.

Capital expenditures hit $1.41 billion this quarter, with full-year guidance at $6.5 billion for warehouse and digital expansion. Costco also trimmed its warehouse opening outlook by two — to 26 net new openings for the fiscal year — with the shortfall pushed to fiscal 2027.

The Full Picture

Costco is executing well. The membership model is sticky, the digital business is growing fast, and the company is doing exactly what it's supposed to do: give squeezed consumers the best deal available.

Record gas volumes are not a triumph. They are a symptom. American families are driving to Costco in record numbers to save 30 cents a gallon because $4.42 per gallon is crushing their budgets. Comparable-store sales growth of 9.8% sounds great until you remember that a big chunk of that is inflation, not volume.

Costco wins when Americans are stressed. Right now, Americans are very stressed.