The rent increase pack: Form 4A, evidence and the letter that lands well
On an assured periodic tenancy only a Section 13 notice on Form 4A can increase the rent. The form is free; the skill is completing it so the dates are valid, pitching a figure that survives a tribunal glance, and sending it with a letter that keeps the relationship intact. That is this pack.
What you get
The Form 4A walkthrough: every field of the current prescribed form explained, with the three rules built in (two months' notice, effect from the start of a rent period, once in any 12 months) and the mistakes that invalidate notices flagged.
The comparable rent evidence sheet: a structured table for local comparables, which both justifies your figure and becomes your tribunal evidence if it is ever needed.
The accompanying letter: the human context around the statutory form, which must never contradict it.
The tribunal explainer: what a referral actually involves, and how realistic figures avoid one entirely.
First, get your dates right with the free rent increase calculator.
Download the pack: £10
Instant download after payment. One-off, no subscription.
The rules, in one line
Two months' notice, taking effect at the start of a rent period, no more than once in any 12 months, on Form 4A only. The full background is in the Section 13 guide and why only Form 4A works.
Common questions
What is in the rent increase pack?
A field by field Form 4A walkthrough, a comparable rent evidence sheet, an accompanying letter template, and a plain English tribunal explainer. £10, one-off.
Is Form 4A included?
The prescribed form itself is free from gov.uk and versions change, so the pack shows you exactly how to complete the current one rather than shipping a copy that could go stale.
What are the Section 13 rules?
Two months' notice, taking effect at the start of a rent period, no more than once in any 12 months. Our free rent increase calculator works out the earliest valid date.
Can the tenant refuse the increase?
They can refer the proposed rent to the First-tier Tribunal before the start date, which then sets a market rent. Realistic figures rarely get referred; the evidence sheet is how you show yours is realistic.
Create your compliant agreement in 10 minutes
Answer a short questionnaire. Get a Renters' Rights Act-compliant periodic tenancy agreement, written tenancy information, and a landlord compliance checklist, customised to your tenancy.
Start my agreement →Frequently asked questions
What is the difference between mandatory and discretionary grounds?
A mandatory ground proved compels the court to order possession; a discretionary ground adds a reasonableness test the court decides on the circumstances.
What replaced the AST in 2026?
The assured periodic tenancy: open-ended, monthly, with possession only on Section 8 grounds and rent increases only via Section 13.