Deutsche Telekom is considering a full merger with its American arm T-Mobile US, which would create one of the world's largest telecoms groups and strengthen its hand in future dealmaking, according to people briefed on the discussions. Under the plan, a new holding company would make an all-stock bid for shares of both existing operations, with Deutsche Telekom already the largest shareholder in T-Mobile US with a 53% stake.
The holding company is likely to be headquartered in a European country other than Germany, with potential dual US and European listings. Deutsche Telekom, Europe's largest telecoms group with a market capitalisation above €142bn, has relied heavily on the growth of T-Mobile US, which merged with Sprint in 2020. T-Mobile US has a market value of $215bn and now competes directly with Verizon and AT&T.
Talks are at a preliminary stage and both companies declined to comment on speculation. Any transaction would require German and US political and regulatory approval: the German government owns roughly 14% of Deutsche Telekom, and state development bank KfW controls a similar stake. CEO Tim Höttges, who also chairs T-Mobile US, has long highlighted the more consolidated US market as more favourable to operators. Source: Financial Times, 21 April 2026, Kieran Smith and Ivan Levingston.
The story in one line. Deutsche Telekom is exploring an all-stock combination with T-Mobile US, via a new HoldCo, that would effectively lock in its American growth engine and complicate any future break-up bid.
Key numbers
53% Deutsche Telekom’s current stake in T-Mobile US
€142bn+ Deutsche Telekom market capitalisation
$215bn T-Mobile US market value
~14% owned by the German government; similar stake controlled by KfW
2020 T-Mobile US’s merger with Sprint — the deal that created today’s scale
New HoldCo likely headquartered in a European country other than Germany
Why it matters
An HoldCo structure is the elegant answer to two problems at once: it gives Deutsche Telekom a structural grip on its most valuable asset, and it raises the bar for any future US consolidator hoping to buy T-Mobile. The German-government and KfW stakes make the deal politically sensitive in Berlin. Regulatory approval in both Washington and Berlin will take months, not weeks.
Takeaway
Europe’s biggest telecoms operator is quietly turning itself into a US-centred listed entity with European optionality. If the HoldCo lists in both markets, it becomes one of the largest cross-listed telecoms groups in the world — and effectively prices the German parent off existing T-Mobile US economics rather than European telco multiples.
Source: Financial Times, 21 April 2026, Kieran Smith and Ivan Levingston.