Your rent is going up: how to challenge it for £47 — and why the tribunal can no longer set it higher than the landlord asked

A rent increase notice is not a bill — it is a proposal. Since 1 May 2026, when the main provisions of the Renters' Rights Act came into force, tenants in England have a workable way to challenge one, and the risk that used to stop people has been removed: the tribunal can no longer set the rent higher than the landlord asked for. The worst outcome of a challenge is the figure that was already in the notice.

When is a landlord allowed to raise the rent?

Only formally, and only once a year. For an assured periodic tenancy in England the law requires a written notice on form 4A (Landlord's notice proposing a new rent), served at least two months before the date the new rent is to start. Rent cannot be raised more than once a year, and not at all in the first 12 months of a tenancy.

A WhatsApp message, an agent's email saying "it'll be £150 more from November" and a phone conversation are not notices. If there was no form 4A, the increase does not legally exist and you are not obliged to pay it.

A separate case is a rent review clause written into the tenancy agreement itself. Then the increase runs under that clause rather than form 4A, and is challenged differently — through the terms of the contract.

What should you check first when the notice arrives?

Four things, ten minutes in total.

One: is it form 4A? It has a prescribed name and structure; a free-form letter on agency paper is not it. Two: is there two months' notice? Count from service to the date the new rent starts. Three: has a year passed? At least 12 months must have elapsed since the last increase took effect, whenever it was announced. Four: the start date must fall at the beginning of a rent period, not mid-month.

If any of the four does not add up, write to the landlord — calmly and specifically: which requirement is missed and that you are asking for a valid notice. That is often where it ends.

How do you challenge the increase at the tribunal?

The application goes to the First-tier Tribunal (Property Chamber), online through the government service or by post and email on form MR1. The fee is £47. It is not charged where the notice is dated before 1 May 2026 or for socially rented property, and help with the fee is available on a low income.

The deadline you cannot miss: apply before the start date of the new rent given in the notice — even if you are still collecting your evidence. GOV.UK says so explicitly: apply first, send evidence later. Miss that date and the right to challenge is gone; the new rent counts as accepted.

The tribunal determines the open market rent — what the property would fetch if it were let again today. Not a "fair" rent, not one you can afford, but a market one.

What is the risk of going to the tribunal?

The old risk was real: the tribunal could determine a market rent above what the landlord had asked, and tenants came out of the process paying more than they went in. That is no longer possible — under the new rules a tenant never pays more than the landlord asked for. The determination can only match the proposed figure or come in below it.

The other old fear was a revenge eviction for daring to challenge. No-fault eviction under section 21 was abolished on 1 May 2026: possession now requires a specific ground, each of which has to be proved. Simply changing your mind is not one.

From what date do you pay the new rent if the tribunal does not side with you?

If the decision comes before the date in the notice, the new rent runs from that date. If the tribunal decides later, it runs from the next payment date after the decision. There is no back-payment for the period of the dispute — the increase is not backdated.

If the new rent causes real hardship, you can ask the tribunal to defer it by up to a further two months, attaching full details of your financial circumstances and an explanation of why paying from the proposed date would be unmanageable.

How do you prove the rent is above market?

Compare like with like: same area, same number of bedrooms, same property type, same furnishing. The method is straightforward.

Collect five to ten current listings for comparable homes nearby and screenshot them with the date visible — listings disappear fast. Ask local agents for a written valuation. Document everything that lowers the market value of your particular home: damp and mould, old windows, heating that does not work, no parking, a noisy road. Attach correspondence with the landlord about defects that were never fixed.

Recent ONS average rent data is a useful anchor: if your increase runs well ahead of the regional figure, that is an argument, though not decisive on its own. The tribunal may inspect the property or hold a hearing.

What else changed for tenants on 1 May 2026?

A great deal, and some of it is about money right now.

No more than one month's rent in advance can be required, and no money at all can be taken before the tenancy is signed. Bidding upwards is banned: an advertisement must state a price, and offers above it cannot be accepted. Refusing a tenant because they claim benefits or have children is prohibited. A request to keep a pet cannot be unreasonably refused.

The rent-arrears threshold for possession rises from two months to three (13 weeks), and notice on that ground from two to four weeks. A landlord cannot sell or move in during the first 12 months, and notice on those grounds is four months.

Civil penalties run to £7,000, and up to £40,000 for serious or repeat breaches. Rent repayment orders now reach 24 months' rent. A mandatory landlord database and an ombudsman with binding decisions have both been introduced.

Does this apply across the whole UK?

No. The form 4A and tribunal route described above is England. Scotland, Wales and Northern Ireland have their own housing law and their own rent dispute bodies; the ban on discriminating against benefit claimants and families with children, however, applies across England, Wales and Scotland.

What if you cannot pay either way?

Do not go quiet and let arrears build. Three months of arrears is itself a ground for possession, so the conversation about a payment plan happens before that point, not after.

Check whether you qualify for the housing element of Universal Credit or for Housing Benefit — working households can qualify too. Your council can be asked for a Discretionary Housing Payment where benefits do not cover the rent. Citizens Advice gives free advice on debt and housing disputes. And check your deposit separately: if it is not in a government-approved scheme that is a breach in its own right — how to get your tenancy deposit back.