5 teams finished the season on 34 points, so head-to-head had to decide the places from 6 to 10. This is the table with only the results between those 5 teams:
The table below sorts the places on points, then goaldifference, not head-to-head, with UDFC in 6th place. On head-to-head UDFC ended the season in 7th place.
The top-3 teams were promoted to T1, while the bottom-2 were relegated to T3.
Thai League 2 2018
| Pos | Club | P | W | D | L | F | A | GD | Pts | Form |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  PTT Rayong | 28 | 17 | 5 | 6 | 54 | 32 | 22 | 56 | |
| 2 |  Trat | 28 | 15 | 9 | 4 | 51 | 32 | 19 | 54 | |
| 3 |  Chiang Mai | 28 | 13 | 11 | 4 | 45 | 31 | 14 | 50 | |
| 4 |  Khon Kaen | 28 | 14 | 7 | 7 | 52 | 30 | 22 | 49 | |
| 5 |  Nongbua Pitchaya | 28 | 12 | 9 | 7 | 32 | 25 | 7 | 45 | |
| 6 |  Udon Thani | 28 | 9 | 7 | 12 | 33 | 35 | -2 | 34 | |
| 7 |  Army United | 28 | 7 | 13 | 8 | 38 | 41 | -3 | 34 | |
| 8 |  Lampang | 28 | 8 | 10 | 10 | 32 | 35 | -3 | 34 | |
| 9 |  Sisaket | 28 | 8 | 10 | 10 | 29 | 32 | -3 | 34 | |
| 10 |  Samut Sakhon | 28 | 8 | 10 | 10 | 34 | 46 | -12 | 34 | |
| 11 |  Rayong | 28 | 8 | 9 | 11 | 32 | 35 | -3 | 33 | |
| 12 |  Thai Honda | 28 | 8 | 8 | 12 | 32 | 39 | -7 | 32 | |
| 13 |  Kasetsart | 28 | 8 | 4 | 16 | 34 | 49 | -15 | 28 | |
| 14 |  Krabi | 28 | 7 | 5 | 16 | 26 | 49 | -23 | 26 | |
| 15 |  Ang Thong | 28 | 5 | 9 | 14 | 39 | 52 | -13 | 24 |