One Rent Review a Year: How the Settled Rules Now Work in Landlords' Favour每年一次租金审视：规则落定后，如何对房东更有利การทบทวนค่าเช่าปีละครั้ง: กฎที่นิ่งแล้วเอื้อประโยชน์ต่อผู้ให้เช่าอย่างไร

Five months after the Renters' Rights Act reset tenancies in England, the practical rulebook has stopped moving. Government guidance for landlords was refreshed on 1 October 2026, and the picture it sets out is more orderly than the headlines suggested: one statutory route for rent increases, one review a year, one prescribed form, and a tribunal process that cannot push your rent above the figure you proposed.

Since 1 May 2026 every assured shorthold tenancy has been an assured periodic tenancy. Rent review clauses, indexation formulas and informal agreements no longer have legal effect, and the only lawful mechanism for an in-tenancy increase is section 13 of the Housing Act 1988, served on the prescribed Form 4A with at least two months' notice. What replaced flexibility is consistency, and for a portfolio consistency is easier to manage.

• One review date a year. Rent may be increased once in any twelve-month period, counted from the date the last increase took effect. Choose an anniversary for each property, diarise it three months ahead, and the annual review becomes routine rather than reactive.
• One form, one method. Form 4A is free from GOV.UK and cannot be substituted with a letter, an email or an agent's own template. Completed properly, it ends the arguments that used to follow informal increases.
• The tribunal cannot raise your figure. If a tenant refers the proposed rent to the First-tier Tribunal, the tribunal determines the open market rent but is capped at the amount in your notice. Under the old system a referral could in theory land above the asking figure; that risk has gone.
• Evidence does the work. A file of achieved comparables in the same street, of the same type and condition, carries more weight than advertised rents. Keep the Form 4A, proof of service and the comparables together and a challenge is answered on paper.

The cap matters more than it first appears. A rent review is now a documented proposal with a defined ceiling, so a landlord who prices accurately and can evidence the number has very little to lose from a challenge. The tribunal is a backstop for genuinely contested figures, not a route to a higher rent.

The timing rules are equally clear. Notice must be at least two months for every tenancy period, the increase cannot take effect before the notice period expires, and the twelve-month clock runs from the effective date of the previous increase rather than the date its notice was served. Diarising the effective date, not the service date, is the single most common administrative slip.

There is a wider benefit in the framework being settled. Possession now runs through defined grounds with published notice periods, tenancy terms follow a standard written statement, and rent changes follow one form. A landlord whose paperwork matches the guidance is, for the first time in years, working to rules that are written down, current, and unlikely to shift again during this Parliament.

None of this removes judgement from letting. It moves the professional standard from memory and custom to documentation: comparables, dates, notices and certificates kept in one place. That is a standard well-run landlords already meet, and it is now the standard the system visibly rewards.

Sources: GOV.UK, Guide to the Renters' Rights Act and Renting out your property: guidance for landlords and letting agents (refreshed 1 October 2026); GOV.UK prescribed Form 4A; Housing Act 1988, section 13 as amended by the Renters' Rights Act 2025.