Rent Increase Tribunal Deadline Calculator

If you have received a Section 13 (Form 4A) rent increase and want to challenge it, you must apply to the First-tier Tribunal before the increase takes effect. Enter the effective date from your notice and this tool shows your deadline and how many days are left.

Last reviewed: 23 July 2026 · Reflects the Renters’ Rights Act 2025, in force from 1 May 2026

Find your challenge deadline

Effective date on your Form 4A notice The date the new rent is due to start – shown on the notice as the date the increase takes effect.

How the deadline works

A tenant can refer a proposed Section 13 rent increase to the First-tier Tribunal, which decides what the open market rent should be. But there is a hard cut-off: the application must reach the tribunal before the effective date on the notice – the date the new rent is due to start. Once that date passes, the right to challenge is normally lost and the rent the landlord proposed takes effect. So the practical deadline is the day before the effective date, and it is worth applying with time to spare rather than on the last day.

Why challenging is now low-risk for tenants

The Renters’ Rights Act changed the tribunal in the tenant’s favour in three important ways:

The rent can only stay the same or go down. The tribunal can set the open market rent at, or below, the figure the landlord proposed – but never higher. The old risk of the tribunal awarding more than the landlord asked for is gone.
No backdating. If the tribunal decides an increase is due, the new rent takes effect from the next rent payment date after the decision – not backdated to the date on the notice.
Hardship deferral. The tribunal can push the start of the increase back further, by up to two months, where paying it straight away would cause the tenant undue hardship.

Together these mean a tenant who challenges generally has little to lose but the time and any small fee – provided the application is in before the deadline.

Worked example

Your Form 4A says the new rent takes effect on 1 September. You must apply to the tribunal before 1 September – so at the latest on 31 August, and ideally sooner. If you apply in time and the tribunal later decides an increase is due, it starts from the first rent payment date after the decision, not from 1 September, and never above the figure your landlord proposed.

Before you challenge, check the notice is even valid. If the notice uses the wrong form, gives less than two months’ notice, or has the wrong effective date, it may be invalid in the first place – in which case the increase does not take effect at all. Our notice validity checker and Section 13 rent increase date calculator help you check that first.

How to apply

Applications to challenge a rent increase are made to the First-tier Tribunal (Property Chamber) in England. It is a low-cost process and each side usually bears its own costs, but you should check the current fee, the correct form and how to submit on GOV.UK before the deadline. Free help with the process is available from Citizens Advice and Shelter.

Frequently asked questions

What is the deadline to challenge a rent increase at the tribunal?

You must apply to the First-tier Tribunal before the effective date stated on the Section 13 (Form 4A) notice, which is the date the new rent is due to start. Once that date passes, the right to refer the increase is normally lost and the rent the landlord proposed takes effect, so it is best to apply with time to spare.

Can the tribunal set my rent higher than the landlord asked for?

No. Under the Renters’ Rights Act the tribunal can keep the rent the same or reduce it to the open market rent, but it cannot set it higher than the figure the landlord proposed. This removed the old risk of ending up worse off, which previously deterred many tenants from challenging an increase.

If I challenge, when does any increase start?

If the tribunal decides an increase is due, the new rent starts from the next rent payment date after the decision, and is not backdated to the date on the notice. The tribunal can also defer the increase further, by up to two months, where paying it straight away would cause the tenant undue hardship.

How much does it cost?

Referring a rent increase to the First-tier Tribunal is a low-cost process, and each side usually bears its own costs rather than paying the other side’s. Fees can change, so check the current fee, the correct form and how to apply on GOV.UK before you submit your application.

Is this legal advice?

No. This tool simply works out the challenge deadline from the effective date you enter, and is general guidance only. It cannot take account of the specific facts of your case, so for advice on your own situation you should speak to Citizens Advice, Shelter or a solicitor.

About this page. Written and maintained by James, founder of TenancyTools.uk, who runs a UK property management business working with landlords, resident management companies and tenants day to day. Every rule on this page is checked against the legislation and current GOV.UK guidance, and the page is reviewed whenever the rules change. See our editorial policy.

Disclaimer: TenancyTools.uk provides general guidance and calculation tools, not legal advice. The rules described on this page apply to assured periodic tenancies in England under the Housing Act 1988 as amended by the Renters’ Rights Act 2025. Different rules apply in Wales, Scotland and Northern Ireland. Tribunal procedure and deadlines can turn on the facts of your case – confirm the current process and fee on GOV.UK and take advice before relying on this result.