The current rules
If you're on a fixed-term tenancy, your landlord generally cannot increase the rent during the fixed term unless your agreement contains a specific rent review clause. If you're on a periodic (rolling) tenancy, they can increase rent by serving a Section 13 notice giving at least one month's warning.
What changes from 1 May 2026
Under the Renters' Rights Act 2025, rent increases become much more regulated:
• Rent can only be increased once per year
• The landlord must serve a formal Section 13 notice giving at least 2 months' warning
• The notice must state the new amount, when it starts, and how to challenge it
• Rental bidding is banned — landlords must advertise a set price and can't accept offers above it
• Landlords cannot demand more than one month's rent in advance
How to challenge an unfair increase
If you believe the increase is above market rate, you can challenge it through the First-tier Tribunal (Property Chamber). The tribunal will assess whether the proposed rent is in line with what similar properties in your area are renting for. If they agree it's too high, they'll set a lower amount.
To challenge, you must apply to the tribunal before the new rent takes effect. The process is free to apply, though you should gather evidence of comparable rents in your area.
What your landlord cannot do
• Increase rent more than once per year (from May 2026)
• Increase rent without serving a proper Section 13 notice
• Increase rent as a punishment for complaining about repairs
• Demand rent above the advertised price when you first moved in
• Demand more than one month's rent in advance
Tip: Keep a record of your rent payments and any notices you receive. If your landlord increases your rent informally (verbally or by text), this is not a valid increase. Only a formal Section 13 notice counts.