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Form 4A — Rent Increase Notice Generator

Generate a valid Form 4A rent increase notice PDF — the statutory form landlords in England must use under the Renters’ Rights Act 2025.

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Step 1 of 2 — Tenant and landlord details

1. Tenant details

Property address

2. Landlord details

What this tool does

Use this tool to generate a valid Form 4A rent increase notice — the statutory form landlords in England must use under the Renters' Rights Act 2025 to propose a rent increase. The old Form 4 is void from 1 May 2026; any notice served on the wrong form has no legal effect.

You will need: your tenant's name and address, the tenancy start date, the date of the last rent increase (or "never" if this is the first), the current rent, the proposed new rent, and the rental period (weekly or monthly). The tool generates a completed PDF you can download, print, and serve.

After you serve the notice

What makes a notice invalid

A Form 4A notice is void if any of the following apply:

  1. Wrong form used — any form other than Form 4A (including the old Form 4) has no effect after 1 May 2026.
  2. Insufficient notice — the effective date must be at least 2 months after the date of service.
  3. 52-week gap not met — the proposed effective date must be at least 52 weeks after the last rent increase took effect (or 52 weeks after the tenancy started, if rent has never been increased).
  4. Effective date wrong — the new rent must take effect on the first day of a rental period.
  5. Notice not served correctly — must be delivered in writing; check your tenancy agreement for the agreed method.

If any of these apply, the notice is void and your tenant can challenge it under Section 13B. You would need to re-serve a corrected notice — the clock resets.

What your tenant can do

Once served with a valid notice your tenant has three options:

  • Accept — the new rent takes effect on the stated date.
  • Do nothing — same outcome as accepting.
  • Challenge at tribunal — they can apply to the First-tier Tribunal using the Rents 1 form at any time before the effective date. Tribunal applications are free to submit, with a £47 payment to process. Importantly, the tribunal cannot set rent above what you proposed — so you cannot lose ground if a tenant challenges.

If a tenant challenges, you continue receiving the old rent while the case is heard (typically 6–9 months). The tribunal sets rent at the open-market rate for the property.

Frequently asked questions

How much notice do I need to give?
At least 2 months. The effective date on the form must be at least 2 months after the date you serve the notice, not 2 months after you fill it in.
What if I used the wrong form?
The notice has no legal effect. You must re-serve using Form 4A. The new proposed effective date must still satisfy the 52-week restriction and the full 2-month notice period.
Can the tribunal set rent higher than I proposed?
No. The tribunal is capped at the rent you proposed. The worst outcome for a landlord is that the tribunal confirms the proposed figure or sets a lower one.
What if my tenant just ignores the notice?
Ignoring a valid notice is the same as accepting it. The new rent takes effect on the stated date if the tenant does not apply to the tribunal before the effective date.

Sources

Official materials and primary sources used to review this tool.

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