The play-offs of the 2018 Fed Cup Europe/Africa Zone Group I were the final stages of the Group I zonal competition involving teams from Europe and Africa. Using the positions determined in their pools, the fourteen teams faced off to determine their placing in the 2018 Fed Cup Europe/Africa Zone Group I. The top two teams advanced to World Group II play-offs, and the bottom two teams were relegated to the Europe/Africa Zone Group II.

Placing	Pool A	Pool B	Pool C	Pool D
1	Serbia	Great Britain	Hungary	Latvia
2	Bulgaria	Estonia	Croatia	Poland
3	—	—	Slovenia	Turkey
4	Georgia	Portugal	Sweden	Austria

The first placed teams of each pool were drawn in head-to-head rounds. The winner of each round advanced to the World Group II play-offs.

Serbia 1	Tallink Tennis Centre, Tallinn, Estonia[1] 10 February Hard (indoors)		Latvia 2
1 2 3 1 Olga Danilović Anastasija Sevastova 6 2 6 4     2 Dejana Radanović Jeļena Ostapenko 2 6 1 6     3 Olga Danilović / Bojana Marinković Jeļena Ostapenko / Anastasija Sevastova 1 6 2 6

Great Britain 2	Tallink Tennis Centre, Tallinn, Estonia[2] 10 February Hard (indoors)		Hungary 0
1 2 3 1 Heather Watson Dalma Gálfi 3 6 6 1 6 4   2 Johanna Konta Fanny Stollár 6 3 6 1     3 Katie Boulter / Anna Smith Dalma Gálfi / Fanny Stollár       not played

The runner-up teams from pools A and D, and B and C competed in order to establish which two teams would place joint fifth in the final standings and which two would place joint seventh.

Bulgaria 0	Tallink Tennis Centre, Tallinn, Estonia[3] 10 February Hard (indoors)		Poland 2
1 2 3 1 Petia Arshinkova Iga Świątek 0 6 4 6     2 Isabella Shinikova Magdalena Fręch 5 7 3 6     3 Petia Arshinkova / Julia Terziyska Alicja Rosolska / Iga Świątek       not played

Estonia 2	Tallink Tennis Centre, Tallinn, Estonia[4] 10 February Hard (indoors)		Croatia 1
1 2 3 1 Saara Orav Ana Biškić 3 6 6 4 6 2   2 Katriin Saar Tena Lukas 6 2 5 7 1 6   3 Elena Malygina / Saara Orav Ana Biškić / Tena Lukas 6 2 4 6 7 5

The teams placing last in each pool competed to keep their place in the Europe/Africa Zone Group I. The bottom-placed team from group A faced the bottom-placed team from Group D, whilst Group B's and Group C's bottom-placed teams faced off. The losers were relegated to the 2019 Europe/Africa Zone Group II.

Georgia 2	Tallink Tennis Centre, Tallinn, Estonia[5] 10 February Hard (indoors)		Austria 1
1 2 3 1 Sofia Shapatava Julia Grabher 6 3 4 6 6 4   2 Ekaterine Gorgodze Barbara Haas 65 77 6 2 3 6   3 Oksana Kalashnikova / Sofia Shapatava Julia Grabher / Barbara Haas 6 4 3 6 6 2

Portugal 0	Tallink Tennis Centre, Tallinn, Estonia[6] 10 February Hard (indoors)		Sweden 2
1 2 3 1 Francisca Jorge Cornelia Lister 2 6 2 6     2 Maria João Koehler Rebecca Peterson 4 6 0 6     3 Francisca Jorge / Maria João Koehler Mirjam Björklund / Jacqueline Cabaj Awad       not played

Placing	Teams
Promoted/First	Latvia	Great Britain
Third	Serbia	Hungary
Fifth	Poland	Estonia
Seventh	Bulgaria	Croatia
Ninth	Turkey	Slovenia
Eleventh	Georgia	Sweden
Relegated/Thirteenth	Austria	Portugal

•  Great Britain and  Latvia were promoted to 2018 Fed Cup World Group II play-offs
•  Austria and  Portugal were relegated to Europe/Africa Zone Group II in 2019

• Fed Cup website