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Walmart will likely put its tariff refunds toward lowering store prices, executives said on Thursday, as they described shoppers who are increasingly anxious about the rising cost of fuel.

In recent weeks, visitors to Walmart's gas stations have begun to fill up with fewer than ten gallons for the first time since 2022, Chief Financial Officer John David Rainey told investors on an earnings call.

"That's an indication of stress," he said.

"We see with our customers that the high-income customer is spending with confidence," Rainey added later, "while the lower-income consumer is more budget-conscious and perhaps navigating financial distress."

The U.S. government last week began refunding tariffs payments to importers that paid higher customs fees imposed by President Trump last year before the Supreme Court struck down most of them. Walmart is now the largest retailer to suggest that it will put those refunds toward potential price cuts.

"We think that the single best return that we can have on a dollar of capital right now is to investment in the customer, invest in price," Rainey said, noting that Walmart's stores and gas stations have been drawing more shoppers looking for deals. U.S. sales grew 4.1% from February through April.

Shoppers' slightly bigger tax refunds this year seem to be offsetting some of the budget pain so far. That's according to rival retailers Home Depot, Target and Lowe's, which also held earnings calls this week. Sales at all three companies grew in the latest quarter.

The latest federal data shows spending at retail stores and online grew 5.2% in April compared to a year earlier, surpassing inflation. That means people may have spent more because of higher prices, but also because they bought more things. At gas stations, spending surged a whopping 21%, driven by higher gas prices.

Walmart executives warned that persistently high gas costs would eventually drive up the prices shoppers see at stores.

The U.S. war with Iran has snarled tanker passage through the Strait of Hormuz, a vital corridor for shipments of both fuel and fertilizer needed to grow food. U.S. inflation already jumped to its highest level in three years in April, with energy prices being a big driver. The average U.S. price of regular gas on Thursday was $4.56 per gallon, according to AAA. That's up $1.38 from a year ago.

So far, major retailers have been absorbing their growing transportation and shipping costs. Walmart on Thursday reported a notable hit to its income from higher fuel expenses. Home Depot executives told investors on Tuesday that the company might use its own tariff refunds to offset its mounting fuel costs.