Japan and Ukraine held the fourth round of talks in February 2026 to revise their 2015 Investment Protection Agreement.

The Japanese Ministry of Foreign Affairs announced on 20 February 2026 that the fourth round of negotiations with Ukraine on revising the Investment Protection Agreement (2015) took place from 17 to 19 February 2026.

Both parties committed to ongoing talks to reach a swift conclusion to the negotiations.

Earlier, Japan’s Ministry of Finance announced on 2 July 2025 that the new income tax treaty between Japan and Ukraine entered into force on 1 August 2025.