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Rent Increase Letter Template: Why a Letter No Longer Raises Rent
- Since 1 May 2026, a letter cannot increase rent on an assured tenancy in England. Only a Section 13 notice on the prescribed Form 4A can.
- A letter still has one legitimate job: a covering note served alongside Form 4A that explains the figure and keeps the relationship civil.
- Free accompanying-letter template below — and the official Form 4A, which is the document that actually does the work.
- An increase the tenant “agreed by letter” is not enforceable. The old rent remains due until a valid Form 4A takes effect.
If you searched for a rent increase letter template, the honest answer is that the letter era ended on 1 May 2026. Under section 13 of the Housing Act 1988, as amended by the Renters’ Rights Act 2025, the only lawful way to raise rent on an assured tenancy in England is the prescribed Form 4A, served with at least two months’ notice. A letter — however well drafted — has no legal effect on the rent.
That doesn’t make the letter worthless. It makes it a different tool: the covering note that travels with the statutory form. This page gives you that template, and points you to the form that actually changes the rent.
What a Letter Can Still Do (and What It Can’t)
Can’t: create an enforceable rent increase, start the notice period, or stand in for Form 4A even if it contains identical information. If the tenant refers the matter to the First-tier Tribunal, an increase proposed only by letter is treated as never having been proposed — the position explained in No Form 4A, No Rent Increase.
Can: soften the moment. A one-page note that explains how you arrived at the figure, points to comparable local rents, and invites the tenant to talk reduces the odds of a tribunal referral — and since the s.14ZB change means the tribunal can only confirm or reduce your proposed figure, avoiding a speculative challenge is worth a page of goodwill.
Free Template: The Accompanying Letter
Serve this with Form 4A, never instead of it. Adjust the bracketed parts; keep the figure and date identical to the form.
Dear [tenant’s name],
Please find enclosed a formal notice of rent increase (Form 4A), proposing a new rent of [£X] per [month/week] from [effective date]. This is the statutory form landlords in England must use, and the date reflects the two months’ notice the law requires.
I’ve based the new figure on rents currently being asked for similar properties locally — for example [one or two comparables]. The last increase was [date], [X months] ago.
If you’d like to talk any of this through before the new rent takes effect, call or email me — I’d rather discuss it than have either of us deal with paperwork we don’t need.
Kind regards,
[your name]
Before May 2026, a rent increase agreed between the parties was generally valid without Section 13. That route is closed: rent-review clauses and informal agreements no longer take effect on assured tenancies. A tenant who happily agreed £1,300 by letter in June can lawfully revert to paying the old rent in November — and a tribunal would side with them. If the increase matters, put it on the form.
The Template You Actually Need Is Form 4A
The official blank form is a free PDF on GOV.UK — our Form 4A page links it directly and explains the four mistakes that void the notice. Or generate it filled-in: Noticr checks the 52-week interval, the two-month notice period and the effective-date alignment, then produces the completed form ready to print, sign and serve — free for up to 5 tenancies.
Generate your Form 4A freeRelated guides
Form 4A Template: Free Download
The official PDF, why there's no Word version, and how to fill it without voiding the notice.
No Form 4A, No Rent Increase
What happens when rent is raised by letter, text or word of mouth — and why the old rent remains due.
How to Serve a Section 13 Notice
Deemed service rules, email consent, and the proof to keep once the form and letter are in the envelope.
How Much Can I Increase Rent?
No cap exists — but the tribunal applies a market rent test. The evidence that supports your figure.
Frequently Asked Questions
Is a rent increase letter legally valid in England?
Not on its own. Since 1 May 2026, the only lawful way to increase rent on an assured tenancy in England is a Section 13 notice served on the prescribed Form 4A. A letter, email or text proposing a new rent has no legal effect, however clearly it is written. The tenant continues to owe the old rent until a valid Form 4A takes effect.
Can my tenant and I just agree an increase in writing without Form 4A?
No. Since the Renters' Rights Act 2025 took effect, Section 13 is the only route to a rent increase on an assured tenancy — informal agreements and rent-review clauses no longer take effect. Even an increase the tenant accepted in writing is not enforceable as rent lawfully due unless it was served on the prescribed form with the correct notice period.
What should a rent increase letter include?
Treat the letter as a covering note served alongside Form 4A, not instead of it. Include the proposed new rent (matching the figure on the form exactly), the effective date from the form, a short explanation of how the figure compares to local market rents, and an invitation to discuss. The letter carries the relationship; the form carries the law.
Does a letter count if it contains all the same information as Form 4A?
No. 'Prescribed form' means the form itself, not the information on it. A letter that reproduces every field of Form 4A is still not Form 4A, and a tribunal will treat the increase as never having been proposed. The safe route is to generate or download the current prescribed form and attach your letter to it.
Where do I get the official Form 4A?
The blank Form 4A for England is a free PDF on GOV.UK, or Noticr generates it filled-in and compliance-checked — the 52-week interval, two-month notice period and effective-date alignment are verified automatically. The free tier covers up to 5 tenancies.