| Round | Date | Step H | Home | HS | – | AS | Away | Step A |
|---|---|---|---|---|---|---|---|---|
| Round 1 | Tue, Sep 9, 2025 | 6 | Billingshurst | 2 | – | 5 | Crowborough Athletic | 4 |
| Round 1 | Tue, Sep 9, 2025 | 6 | East Preston | 5 | – | 2 | Arundel | 6 |
| Round 1 | Tue, Sep 9, 2025 | 5 | Haywards Heath Town | 1 | – | 0 | Ringmer | 6 |
| Round 1 | Tue, Sep 9, 2025 | 6 | Infinity | 0 | – | 3 | Lancing | 5 |
| Round 1 | Tue, Sep 9, 2025 | 5 | Little Common | 2 | – | 1 | Bexhill United | 5 |
| Round 1 | Tue, Sep 9, 2025 | 5 | Midhurst & Easebourne | 0 | – | 2 | Jarvis Brook | 6 |
| Round 1 | Tue, Sep 9, 2025 | 5 | Newhaven | 2 | – | 0 | Forest Row | 5 |
| Round 1 | Tue, Sep 9, 2025 | 5 | Pagham | 0 | – | 0p | Roffey | 5 |
| Round 1 | Tue, Sep 9, 2025 | 5 | Peacehaven & Telscombe | 3 | – | 1 | Eastbourne United | 5 |
| Round 1 | Tue, Sep 9, 2025 | 5 | Seaford Town | 5 | – | 1 | AFC Uckfield Town | 6 |
| Round 1 | Tue, Sep 9, 2025 | 6 | Selsey | 1 | – | 2 | Crawley Down Gatwick | 5 |
| Round 1 | Tue, Sep 9, 2025 | 5 | Shoreham | 3 | – | 3p | Horsham YMCA | 5 |
| Round 1 | Tue, Sep 9, 2025 | 5 | Wick | 1 | – | 0 | Steyning Town | 5 |
| Round 1 | Tue, Sep 9, 2025 | 6 | Worthing United | 2 | – | 2p | Loxwood | 6 |
| Round 1 | Wed, Sep 10, 2025 | 5 | AFC Varndeanians | 1 | – | 0 | Mile Oak | 6 |
| Round 1 | Wed, Sep 10, 2025 | 6 | Saltdean United | 3 | – | 0 | Oakwood | 6 |
| Round 2 | Tue, Sep 30, 2025 | 4 | Eastbourne Town | 2 | – | 0 | Crowborough Athletic | 4 |
| Round 2 | Tue, Oct 7, 2025 | Brighton & Hove Albion | 1 | – | 0 | Hassocks | 4 | |
| Round 2 | Tue, Oct 7, 2025 | 3 | Burgess Hill Town | 1 | – | 3 | Broadbridge Heath | 4 |
| Round 2 | Tue, Oct 7, 2025 | 4 | East Grinstead Town | 0 | – | 5 | Haywards Heath Town | 5 |
| Round 2 | Tue, Oct 7, 2025 | 6 | East Preston | 4 | – | 1 | Saltdean United | 6 |
| Round 2 | Tue, Oct 7, 2025 | 6 | Jarvis Brook | 0 | – | 7 | Worthing | 2 |
| Round 2 | Tue, Oct 7, 2025 | 5 | Little Common | 0 | – | 2 | Three Bridges | 4 |
| Round 2 | Tue, Oct 7, 2025 | 4 | Littlehampton Town | 3 | – | 4 | Crawley Down Gatwick | 5 |
| Round 2 | Tue, Oct 7, 2025 | 5 | Newhaven | 5 | – | 1 | Seaford Town | 5 |
| Round 2 | Tue, Oct 7, 2025 | 5 | Peacehaven & Telscombe | 1 | – | 2 | Horsham YMCA | 5 |
| Round 2 | Tue, Oct 7, 2025 | 5 | Roffey | 2 | – | 1 | Lewes | 3 |
| Round 2 | Tue, Oct 7, 2025 | 3 | Whitehawk | 1 | – | 1p | Horsham | 2 |
| Round 2 | Tue, Oct 7, 2025 | 5 | Wick | 5 | – | 2 | Lancing | 5 |
| Round 2 | Wed, Oct 8, 2025 | 5 | AFC Varndeanians | 1 | – | 3 | Hastings United | 4 |
| Round 2 | Wed, Oct 8, 2025 | 6 | Loxwood | 0 | – | 5 | Bognor Regis Town | 4 |
| Round 2 | Tue, Oct 28, 2025 | 2 | Eastbourne Borough | 2p | – | 2 | Chichester City | 3 |
| Round 3 | Tue, Nov 18, 2025 | 4 | Bognor Regis Town | 3 | – | 0 | Roffey | 5 |
| Round 3 | Tue, Nov 18, 2025 | 4 | Broadbridge Heath | 5 | – | 1 | Hastings United | 4 |
| Round 3 | Tue, Nov 18, 2025 | 2 | Eastbourne Borough | 3 | – | 0 | Haywards Heath Town | 5 |
| Round 3 | Tue, Nov 18, 2025 | 4 | Eastbourne Town | 0 | – | 1 | Brighton & Hove Albion | |
| Round 3 | Tue, Nov 18, 2025 | 2 | Horsham | 7 | – | 1 | Crawley Down Gatwick | 5 |
| Round 3 | Tue, Nov 18, 2025 | 5 | Horsham YMCA | 3 | – | 0 | East Preston | 6 |
| Round 3 | Tue, Nov 18, 2025 | 5 | Newhaven | 0 | – | 3 | Worthing | 2 |
| Round 3 | Tue, Nov 18, 2025 | 4 | Three Bridges | 10 | – | 0 | Wick | 5 |
| Quarter Final | ||||||||
| Quarter Final | ||||||||
| Quarter Final | ||||||||
| Quarter Final | ||||||||
| Semi Final | ||||||||
| Semi Final | ||||||||
| Final |
