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T-Mobile US (TMUS) offers plenty of cash. Over the last twelve months, the company generated free cash flow equal to 9.8% of its market value, compared with 4.2% for the median S&P 500 company. A yield that high points to either a business on sale or one the market expects to shrink. What would that cash mean to you as an owner, and how solid is T-Mobile’s?
What T-Mobile’s Cash Means For You As An Owner
As a T-Mobile shareholder, you own a slice of every dollar of free cash the company produces, whether or not it is ever paid out to you. Cash that stays inside the company still belongs to its owners, just as its profit does. When the market comes to recognize that cash, the share price tends to follow, more so when the cash keeps growing.
Free Cash At T-Mobile Nearly Tripled In Three Years
T-Mobile produced $17.8 billion of free cash flow over the twelve months to September 2026, nearly three times the $6.2 billion of the twelve months to September 2023. The company sells postpaid phone plans, 5G broadband and fiber. It kept 18.9% of its revenue as free cash, more than any of five peers: AT&T, Verizon, Comcast, Charter and Telephone and Data Systems. A small part of that rise came from spending less: T-Mobile’s capital spending was $11.0 billion over the latest twelve months, against about $11.8 billion three years earlier. Most of it, though, came from cash from operations, which grew to $28.7 billion from $18.0 billion over the three years.
Some of that cash must first cover T-Mobile’s debt. Net debt stood at $112 billion at the end of September 2026, an amount equal to 62% of the company’s market value. Measured against market value plus that debt, the cash yield sits at 6.1%. Over the latest twelve months, T-Mobile posted operating income at 4.7 times its interest bill.
T-Mobile’s Operating Profit Stalled As Sales Grew
T-Mobile’s revenue rose 9.3% over the twelve months to September 2026, yet operating income remained flat at $19.4 billion, the same as a year earlier. The weakest of the last five quarters ended in December 2025, recording a 15.4% operating margin. In the quarter to September 2026, that margin climbed to 24.0% from 21.9% in the same quarter a year earlier. These figures show the stall looks concentrated around the turn of 2026.
Management said the timing of last year’s acquisitions, including U.S. Cellular and some fiber purchases, blurred year-on-year comparisons. The company expects postpaid organic service revenue to grow about 7% in the fourth quarter of 2026. The company also expects falling wholesale revenue and prepaid trends to partly offset that postpaid growth in 2026. Management also said more of its capital will probably go to spectrum auctions in 2027 and 2028.
