Section 13 rent increase checker
Since 1 May 2026 every rent increase in England goes through Section 13: the official Form 4A, at least 2 months’ notice, and no more than one increase per 12 months. One date and this checker works out the earliest day your new rent can start. Free, no sign-up.
About Section 13 rent increases
Two rules decide your date. The rent can rise at most once per 12 months, counted from when it last changed. And the notice itself must give the tenant at least 2 months from the day it is served. The later of the two is your earliest start date, which is exactly what this checker calculates.
The notice must be the official Form 4A. Your tenant can refer the proposed rent to the First-tier Tribunal, so the figure should hold up against comparable local rents. The checker is a date calculator, not legal advice.
Common questions
How often can I raise the rent?
At most once per 12 months, counted from the date the rent last changed. A new increase cannot take effect until a full year has passed.
How much notice do I have to give?
At least 2 months from the day the Section 13 notice is served, using the official Form 4A.
Do I have to use Form 4A?
Yes. Since 1 May 2026 every rent increase in England goes through the Section 13 route, and informal increases, including ones agreed by text or email, are invalid.
Can my tenant challenge the increase?
Yes. Your tenant can refer the proposed rent to the First-tier Tribunal, which looks at comparable local rents. Keep your figure defensible.
What date should I put on the form?
A start date no earlier than both gates allow: at least 2 months after the notice is served, and at least 12 months after the rent last changed. This checker works out the earliest day that satisfies both.
Is this legal advice?
No. The checker calculates dates from the rules that apply in England and is based on UK government guidance. For advice on your specific situation, consult a qualified letting agent or solicitor.