There is no single UK-wide percentage limit on how much a landlord can increase rent. The rules depend on where the property is and the type of tenancy. Even if the new rent is fair, you still need to follow the right steps and give enough notice.
This guide covers rent changes when you already have a private tenant. Start with the agreement, the tenancy’s start date and the date of the last increase. Use these to check both the amount and when the new rent could start.
Last reviewed: 14 September 2026.
How much can landlords increase rent?
A rise in mortgage costs or inflation does not, on its own, set the rent you can charge. Check the rules for your tenancy, then look at what similar homes let for in the area.
For example, moving from £1,000 to £1,050 a month is a 5% rise. That shows the size of the change, but does not prove the new rent meets the rules. Compare homes of a similar size, condition and location, and check which bills and furniture the rent includes.
Asking rents show what landlords hope to get. Where possible, ask a letting agent for evidence of rents agreed with tenants too. A larger, newly refurbished home may be a poor match for yours.
Rent-increase rules across the UK
How often can a landlord increase rent? Use the table to find the rules for your type of tenancy. Check both the notice period and the gap between rent rises.
Location and tenancy
Frequency
Minimum notice and process
England: assured periodic tenancy
Once a year; no increase in the first year.
Two months, using Form 4A through section 13.
Wales: periodic standard occupation contract
Later rent changes at least a year apart.
Two months, using Form RHW12.
Scotland: private residential tenancy
Once in a 12-month period.
Three months, using the prescribed rent-increase notice.
Northern Ireland: private tenancy under general rules
Not within 12 months of the tenancy starting or the last increase.
Three months’ written notice.
The table covers the tenancy types shown. Lodgers have different rights, while older protected or regulated tenancies follow their own rules. Giving enough notice does not remove any other limits in the contract or law.
Increasing rent on homes in England
The Renters’ Rights Act changed the process for private assured tenancies from 1 May 2026. For an assured periodic tenancy, follow the section 13 route each time, even if your tenant agrees to the rise.
Check when the increase takes effect
Count from the date the last rent rise started, not the date you sent notice. If the last rise took effect on 1 February 2026, the next cannot start before 1 February 2027. You must also allow the full notice period.
Use the correct rent increase notice
Complete Form 4A, the Section 13 rent increase notice, and follow its instructions. You can deliver it in person or by post. Email is an option only where the tenancy agreement allows it. Keep proof of when and how you gave notice.
A Form 4 notice served before 1 May 2026 may still take effect under rules for the changeover. An old rent-review clause is a different case, so check the rules for earlier notices before relying on it.
Rules elsewhere in the United Kingdom
Wales: check the occupation contract
In Wales, the law calls the rental agreement an occupation contract and the tenant a contract-holder. The table covers periodic standard contracts, which roll on from one rental period to the next. Use Form RHW12 for the notice.
For a fixed-term standard contract, check its terms and the rules before changing rent. England’s ban on first-year rises does not carry over to Wales. The Welsh notice requires at least a year between one rent change and the next.
Scotland: distinguish current rules from changes
For a private residential tenancy, use the prescribed rent-increase notice. If you send it by post or email, allow two days for it to arrive before the three-month notice period starts. Older tenancy types have different rules.
Scotland’s new rent-control framework allows caps for certain properties in designated areas. It does not impose a single cap on every rental home. Councils began checks on local rents in April 2026, with their first reports due by 31 May 2027. Check the rules for your area before setting the new rent.
Northern Ireland: check rights and restrictions
The general notice and frequency restrictions have applied since 1 April 2025. Read them alongside the tenancy agreement. A year passing does not, by itself, give you the right to raise rent.
Check separate rules if the Rent Officer controls the rent. This includes certain protected and statutory tenancies, and privately rented homes found unfit by an environmental health officer.
Prepare a proposed rent increase carefully
Build a fair local comparison
Keep a note of the homes you checked, their rents and how they differ from yours. Understanding local tenant demand helps you choose homes that are a fair match.
Talk through the proposal with tenants
Explain the amount, why you want to raise it and when it would start. Give tenants time to ask questions, then follow the formal notice process.
Check the dates and keep records
Check the tenancy type, last rent rise and how to give notice. Keep the form, proof of delivery and replies together. If you spot a wrong date or form, get advice before you collect more rent.
Consider the wider rental budget
Think about the value of keeping a good tenant, as well as the costs of finding a new one. Improving rental income means keeping an eye on those costs as well as the monthly rent.
Can tenants challenge a rent increase?
In England, an assured periodic tenant can ask the First-tier Tribunal to assess a proposed rent above the open-market level. This means the rent you could expect if you let the home again. Sending a notice does not remove that right.
In Scotland, a private residential tenant can ask Rent Service Scotland to assess the increase. It must receive their application within 21 days of the tenant receiving the notice. The rent officer checks local rents and may set a rent above or below the amount you asked for.
Other parts of the UK and other tenancy types have their own routes. Get advice on deadlines and the rent due during a dispute. Keep communication calm and retain the evidence for your proposed rent. For tenancy disputes or notice checks, speak to a legal adviser.
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Discuss your property plans and borrowing needs with an adviser.
Your home may be repossessed if you do not keep up repayments on your mortgage.
The FCA does not regulate some buy-to-let mortgages.
Common questions about increasing the rent
Can I increase rent because mortgage costs rise?
Higher costs may lead you to review the rent, but they do not set the amount you can charge. Check the rules and local rents before you propose a rise.
Does a tenant’s agreement replace formal notice?
For an assured periodic tenancy in England, no. You still need the section 13 process. For other types of letting, check the local rules and contract before relying on the tenant’s agreement alone.
Can rent increase during a fixed term?
Check the country, tenancy type and terms first. England’s private assured tenancies now follow the periodic system. For a fixed term elsewhere, check the rules before using a clause that lets you review rent.
Is there a maximum percentage rent increase?
There is no single cap for the whole UK. Local limits, controlled rents and a tenant’s right to challenge the amount may affect what you can charge. Check which rules apply to the home.
