2018 Football West State Cup
Western Australian soccer clubs competed in 2018 for the Football West State Cup, known as the Belt Up Cup for sponsorship reasons. Clubs entered from the National Premier Leagues WA, the two divisions of the State League, a limited number of teams from various divisions of the 2018 Amateur League competition, and from regional teams from the South West, Goldfields and Great Southern regions.
This knockout competition was won by Armadale, their 1st title.
The competition also served as the Western Australian Preliminary Rounds for the 2018 FFA Cup. The two finalists – Armadale SC and Gwelup Croatia – qualified for the final rounds, entering at the Round of 32.
Format
| Round | Clubs remaining | Winners from previous round | New entries this round | Match Dates |
| Round 2 | 67 | none | 32 | 11–18 Mar |
| Round 3 | 51 | 16 | 22 | 23–29 Mar |
| Round 4 | 32 | 19 | 13 | 2 Apr |
| Round 5 | 16 | 16 | none | 25 Apr |
| Round 6 | 8 | 8 | none | 19–20 May |
| Round 7 | 4 | 4 | none | 4 Jun |
| Final | 2 | 2 | none | 14 Jul |
Second round
The round numbers conform to a common format throughout the 2018 FFA Cup preliminary rounds. A total of 32 teams took part in this stage of the competition, from lower divisions of the Amateur League, and from regional teams entering from the South West, Great Southern and Goldfields regions. Matches in this round were played between 11–18 March. For matches where the scores were equal at full-time, they went straight to penalties.| Tie no | Home Team | Score | Away Team |
| 1 | Dalyellup Park Rangers | Walkover | Northern City |
| 2 | Bunbury United | 3–0 | Kalamunda United |
| 3 | Murray District Rangers | 1–9 | Kingsley SC |
| 4 | Collie Power | 1–6 | BrOzzy Sports Club |
| 5 | Kwinana United | 4–2 | North Beach |
| 6 | Canning Buffers | Walkover | Cracovia White Eagles |
| 7 | Albany Rovers | 1–2 | Yanchep United |
| 8 | Maccabi | 1–2 | Phoenix Glory |
| 9 | Sporting Warriors | Walkover | Albany Bayswater |
Third round
A total of 38 teams took part in this stage of the competition. New teams that enter at this round were from Football West State League Division 1 and Football West State League Division 2. Matches in this round were played on 23–29 March.| Tie no | Home Team | Score | Away Team |
| 1 | Olympic Kingsway | 3–0 | Mandurah City FC |
| 2 | Phoenix Glory | 1–5 | Swan United |
| 3 | South West Phoenix | 10–0 | Yanchep United |
| 4 | Kingsley SC | 1–5 | Rockingham City |
| 5 | Dianella White Eagles | 7–0 | Curtin University |
| 6 | Bunbury United | 1–4 | Busselton City SC |
| 7 | Kwinana United | 4–0 | Warnbro Strikers SC |
| 8 | Canning City | Walkover | Ballajura AFC |
| 9 | Northern City | 5–8 | Bunbury Dynamos |
| 10 | Balga | 4–1 | Shamrock Rovers |
| Tie no | Home team | Score | Away team |
| 11 | Joondalup City | 1–5 | Ashfield |
| 12 | Wanneroo City | 7–1 | Woodvale FC |
| 13 | BrOzzy Sports Club | Walkover | Cracovia White Eagles |
| 14 | Murdoch Uni–Melville | 0–3 | Fremantle City FC |
| 15 | Morley-Windmills | 1–2 | Kelmscott Roos |
| 16 | Gwelup Croatia | 3–1 | Quinns |
| 17 | UWA-Nedlands | 6–2 | Hamersley Rovers |
| 18 | Perth AFC | 0–6 | Western Knights |
| 19 | Albany Bayswater | 1–5 | Gosnells City |
Fourth round
A total of 32 teams took part in this stage of the competition. Clubs from the National Premier Leagues WA entered into the competition at this stage, with the exception of Perth Glory Youth who were not eligible. Matches in this round were played on 2 April.| Tie no | Home Team | Score | Away Team |
| 1 | Inglewood United | 1–3 | ECU Joondalup |
| 2 | South West Phoenix | 0–3 | Forrestfield United |
| 3 | Kwinana United | 0–8 | Gwelup Croatia |
| 4 | Rockingham City | 2–3 | Armadale SC |
| 5 | Olympic Kingsway | 2–3 | Cockburn City |
| 6 | Balga | 0–1 | Floreat Athena |
| 7 | Busselton City SC | 1–5 | Subiaco AFC |
| 8 | Kelmscott Roos | 0–1 | UWA-Nedlands |
| Tie no | Home team | Score | Away team |
| 9 | Balcatta | 8–0 | BrOzzy Sports Club |
| 10 | Fremantle City | 0–1 | Joondalup United |
| 11 | Gosnells City | 0–10 | Bayswater City |
| 12 | Dianella White Eagles | 5–1 | Canning City |
| 13 | Stirling Lions | 10–0 | Bunbury Dynamos |
| 14 | Western Knights | 0–1 | Sorrento |
| 15 | Ashfield | 0–4 | Perth |
| 16 | Wanneroo City | 2–4 | Swan United |
Fifth round
A total of 16 teams took part in this stage of the competition. Matches in this round were played on 25 April.| Tie no | Home Team | Score | Away Team |
| 1 | Gwelup Croatia | 3–1† | Cockburn City |
| 2 | Bayswater City | 1–2 | Floreat Athena |
| 3 | Balcatta | 2–3† | Armadale |
| 4 | Swan United | 1–6 | Dianella White Eagles |
| Tie no | Home team | Score | Away team |
| 5 | Subiaco AFC | 3–1 | Stirling Lions |
| 6 | ECU Joondalup | 5–0 | UWA-Nedlands |
| 7 | Sorrento | 3–4 | Perth |
| 8 | Joondalup United | 1–4 | Forrestfield United |
;Notes:
- † = After Extra Time
Sixth round
;Notes:
- † = After Extra Time
Seventh round
| Tie no | Home Team | Score | Away Team |
| 1 | Gwelup Croatia | 4–1 | Floreat Athena |
| 2 | Armadale | 3–2 | ECU Joondalup |