PARIS (Reuters) -The latest U.S. proposal in international talks on a global minimum corporate tax rate is a basis for compromise, French Finance Minister Bruno Le Maire said on Friday. The U.S. Treasury Department on Thursday offered to accept a global minimum corporate tax of at least 15%, a rate significantly below its proposed 21% minimum for U.S. multinationals. “The last proposal made by the United States could be a good compromise,” Le Maire said as he arrived for talks with euro zone counterparts in Lisbon. “But the key question is clearly to have a compromise and an agreement about the two pillars - digital taxation and minimum taxation as soon as possible, I mean the G20 in Italy at the beginning of July,” he added. The nearly 140 countries involved in the talks aim to reach an agreement by mid-year but the Organisation for Economic Cooperation and Development, which is hosting the negotiations, has suggested it may take until October to finalise a deal. Reporting by Leigh ThomasEditing by David Goodman and Toby Chopra Our Standards: The Thomson Reuters Trust Principles.