By Juveria Tabassum and Jessica DiNapoli

August 7 (Reuters) - Lower-income U.S. households are cutting back on eating out, travel and pantry staples like diapers, soda and beer, as U.S. tariffs on imports are set to push prices even higher, said executives from Procter & Gamble PG.N, Coca-Cola KO.N and Chipotle Mexican Grill CMG.N.

Consumers are increasingly seeking bargains, according to earnings reports and executive commentary from the past two weeks. Industry experts expect profit margins to shrink as companies find they can no longer rely on price hikes to boost revenue. U.S. President Donald Trump's tariffs have already pushed up prices on some of P&G products, the company has said.

The tariffs, which importers are tending to pass on to consumers, are most likely to hit the poorest Americans worst, said policy researchers at the Budget Lab at Yale and the Foundation for Research on Equal Opportunity.

"It does feel like there are certain cohorts of the consumer, definitely on the lower-income side, that are feeling pressure right now," Chipotle Mexican Grill Chief Financial Officer Adam Rymer told Reuters.

Definitions of "low income" can vary widely, and depend on the number of dependents or children in a household and where consumers live.

Bank of America BAC.N, the second biggest U.S. consumer-facing bank, in research notes has described earners of $50,000 or less as "lower income," and more likely to be living paycheck to paycheck. However, Chipotle, with its $10 burritos, has a benchmark of $75,000 or less. Coke has previously said "low-income" is less than $40,000 per year, while P&G did not immediately respond to questions about its definition.

Chipotle will consider the financial burdens on its lower-income consumers when weighing future price hikes, Rymer said.

Consumer products bellwether P&G struck a cautious tone in its forecast for its upcoming fiscal year, saying shoppers across incomes were reining in spending due to Trump's tariffs and immigration crackdown, along with rising interest rates and inflation.

Coca-Cola KO.N is marketing more affordable sodas to lower-income consumers, CEO James Quincey said, and brewer Molson Coors TAP.N added that such buyers are looking for smaller pack sizes.

Consumers have been tightening their wallets as inflation ticks up and companies raise prices on everyday purchases like Hershey HSY.N chocolate and Tide laundry detergent. Cuts to federal food assistance programs are also looming. Savings consumers might have managed to sock away during the pandemic are now long gone.

"Re-engaging the low-income consumer is critical as they typically visit our restaurants more frequently than middle- and high-income consumers," said McDonald's MCD.N CEO Chris Kempczinski. Visits from lower-earners across the fast food industry declined by a double-digit percentage from last year, and weaker jobs growth in July made them even more anxious, he noted.

Consumer caution is also reflected in big spending events such as back-to-school shopping, which is now underway, said Dana Telsey, analyst at Telsey Advisory Group.

Lower-income household credit card spending declined in the three months to June from the year-ago period, even as middle- and upper-income spending rose, Bank of America data showed. One of the few positives is a steady labor market. That has helped keep the worst of the impact at bay, analysts and executives have said.

To attract consumers with tight budgets, fast-food chains are bundling select menu items at around $5, but lower-income households seek even better deals. McDonald's said sales of its reintroduced $2.99 snack wrap were "encouraging."

Taco Bell introduced $1 to $3 items like fountain sodas and burritos this year, helping demand at the Tex-Mex chain remain robust, but sales for pricier pizzas and fried chicken buckets at Pizza Hut and KFC were weak, according to Yum Brands' YUM.N earnings report this week.

Packaged foods maker Kraft Heinz KHC.N said it does not expect an improvement this year, and is working to keep prices lower, including introducing value-sized packages.

"We also have a consumer who, unlike a few years ago when inflation was peaking, doesn't have savings built up in the same way that they did in 2022 and 2023," said Katherine Cullen, vice president of industry and consumer insights at trade group NRF. "We see that particularly among lower-income consumers."

German shoemaker Adidas ADSGn.DE said it would have to consider the sales impact of higher prices, aimed at offsetting tariffs, on its sneakers.

"We do anticipate further consumer (spending) cooling in the second half as ... tariff effects play through," Citigroup Chief Financial Officer Mark Mason said in a call with reporters.

(Reporting by Juveria Tabassum in Bengaluru; additional reporting by Manya Saini in Bengaluru, Waylon Cunningham in New York; editing by Peter Henderson, Jessica DiNapoli and Richard Chang)

((Juveria.Tabassum@thomsonreuters.com))