The income which the schools receive from the William Jones Foundation allows us to maintain fees at a competitive level and to provide financial assistance for pupils who otherwise would not be able to afford to attend the schools.
| Monmouth Senior School (Years 7-13) | Termly | Annual |
| Day pupils (Years 7-13) | £7,192 | £21,576 |
| Boarding (Years 7-13) | £13,875 | £41,625 |
| Sixth Form Boarding (External Entry from Year 12) | £15,064 | £45,192 |
| Sixth Form Boarding (After Foundation Year) | £15,064 | £45,192 |
| Monmouth Prep School (Nursery – Year 6) | Termly | Annual |
| Nursery – 4 sessions | £2,054 | £6,162 |
| Nursery – 5 sessions | £2,238 | £6,714 |
| Nursery – 6 sessions | £2,422 | £7,266 |
| Nursery – 7 sessions | £2,789 | £8,367 |
| Nursery – 8 sessions | £2,789 | £8,367 |
| Nursery – 9 sessions | £2,972 | £8,916 |
| Nursery – 10 sessions | £3,155 | £9,465 |
| Reception – Year 2 | £3,442 | £10,326 |
| Years 3-6 (Day) | £5,044 | £15,132 |
| Years 3-6 (Boarding) | £9,258 | £27,774 |
