The seven teams were divided into two pools of three and four teams. The two pool winners took part in a play-off to determine the nation advancing to the World Group II play-offs. The nations finishing last in their pools took part in a relegation play-off, with the losing nation being relegated to Group II for 2018.
Seeding: The seeding was based on the Fed Cup Rankings of 14 November 2016 (shown in parentheses below).
The thirteen teams were divided into three pools of three teams and one pool of four teams. The four pool winners took part in a play-off to determine the nation advancing to Group I in 2018.
Seeding: The seeding was based on the Fed Cup Rankings of 24 April 2017 (shown in parentheses below).