How do I increase the rent legally?

The statutory rent-increase route, the notice periods, and how to defend the figure at tribunal.

7 min read · Updated 2 August 2026

Overview

On a periodic tenancy the reliable route is the statutory notice procedure: one increase in any 12-month period, using the prescribed form, giving the required notice before the new rent starts. The tenant can refer the proposed rent to the tribunal, which sets an open market rent.

Why it matters

An increase imposed outside the statutory route is usually unenforceable, and arrears built on an invalid increase can undermine a later possession claim.

Legal requirements

Give notice on the prescribed form for your country and tenancy type.
Observe the minimum notice period before the new rent takes effect.
Do not increase more than once in any 12-month period.
Allow the tenant to refer the proposal to the tribunal within the statutory window.

Common mistakes

Relying on a contractual escalation clause that the statutory scheme overrides.
Serving the notice late so the first higher payment falls due too early.
Proposing a figure with no comparable evidence, which invites a tribunal reduction.
Treating an unpaid increase as arrears before the increase has validly taken effect.

Practical guidance

Collect three to five genuine local comparables with dates and sources before proposing a figure.
Explain the increase to the tenant in plain terms alongside the formal notice — most disputes are about surprise, not amount.
Set the effective date at the start of a rent period to keep the ledger clean.
Update your rent schedule and standing order reference on the day the new rent begins.

Can the tenant challenge it?

Yes. The tenant can apply to the tribunal, which determines the open market rent. The tribunal can set a rent lower than proposed, so an unsupported figure carries real downside.

What about Scotland and Wales?

Scotland runs its own rent-increase notice and adjudication process for private residential tenancies, and Wales operates under the Renting Homes (Wales) Act. The once-yearly principle applies across all three.