They still have to pay US taxes on their US revenue
They won’t be able to lower prices here
With a lower tax burden on foreign profits, they’ll at least have the option to consider lowering US prices. They may not choose to do so but that’s the company’s call. Lowering their prices may give them a competitive edge over the other fast-food places that makes up for the reduced revenue.
According to Business Week:
Tim Hortons said in a press release that a key benefit of the combination would be the chance to take advantage of Burger King’s global presence to speed its growth in international markets. Tim Hortons has 3,630 outlets in Canada, 866 in the U.S., and 50 in other countries. Burger King is much larger, with 7,371 restaurants in the U.S. and Canada; 3,556 in Europe, the Middle East, and Africa; 1,583 in Latin America; and 1,298 in the Asia-Pacific region.Close to half their franchises are outside the US. Not having to pay US taxes on their non-US global operations will benefit them.