Rent increase calculator
Enter your current rent and the proposed new rent to see the rise as a percentage, over a year, and as a share of what you earn.
How this is calculated
The increase is the new rent less the current rent, shown a month, a year and as a percentage of the current rent.
If you enter your take-home pay, the rent is also shown as a share of it before and after the rise.
In England, from 1 May 2026 private landlords can only raise the rent once a year, not in the first year, using a section 13 notice with at least two months' notice. A tenant can challenge it at the First-tier Tribunal if it is above market rent.
Rates used · 2026/27
| How often | once a year, not in the first year |
| Notice | at least 2 months, on form 4A |
| Challenge | First-tier Tribunal, if above market rent |
| Applies | private renting in England from 1 May 2026 |
Last checked July 2026. Source: HMRC and gov.uk.
Worked example
A rise from £1,200 to £1,300 a month is £100 more, or 8.3%, which is £1,200 a year. On £2,800 of take-home pay the rent goes from 42.9% to 46.4% of it.
Common questions
How much can a landlord put the rent up by?
There is no fixed cap in England. The test is whether the new rent is in line with the open market rent for similar homes nearby, and the tribunal can set the rent if you challenge it.
How do I challenge a rent increase?
Apply to the First-tier Tribunal before the new rent starts. It looks at rents for comparable homes nearby and decides the rent.
Can my landlord put the rent up in the first year?
Not under the rules from 1 May 2026. The first increase can only take effect at least a year after the tenancy began.
Do the rules apply in Scotland and Wales?
No. Scotland and Wales have their own rules on rent increases.