The form
To increase the rent you follow the section 13 process and complete Form 4A, the landlord's notice proposing a new rent. It is on the GOV.UK assured tenancy forms page and was updated on 1 May 2026.
Sources: GOV.UK: Renting out your property: rent increases; GOV.UK: Assured tenancy forms
Notice and how often
Give the tenant the completed form at least 2 months before the new rent starts.
You can only increase the rent once a year and not in the first year of the tenancy.
Source: GOV.UK: Renting out your property: rent increases
If the tenant disagrees
If your tenant thinks the new rent is higher than the open market rent they can ask the First-tier Tribunal to decide what the rent should be.
Source: GOV.UK: Renting out your property: rent increases
Sources
Page updated 10 October 2026. Each source shows the date it was last checked. Each guide states what the linked government page says, with the dates and nothing more. England only.