The Americas Zone was one of three zones of regional competition in the 2016 Fed Cup.
The two pool winners took part in a play-off to determine the nation advancing to the World Group II play-offs.
The four nations finishing third and fourth in their pools took part in relegation play-offs, with the two losing nations being relegated to Group II for 2017.
The nine teams were divided into one pool of four teams and one pool of five teams.
The top two nations in each pool took part in play-offs, with the two winning nations being promoted to Group I for 2017.