The new rent, the rise per payment and over a year, and the notice your landlord must give in England, Wales, Scotland and Northern Ireland.
New rent
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Enter the current rent to see the new rent.
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Enter the current rent and either the percentage increase or the proposed new rent. You get the new rent, the difference per payment and over a year, and the percentage, with the workings. Amounts are rounded to the nearest penny. Choose England, Wales, Scotland or Northern Ireland to see how often the rent can go up there and how much notice is needed. The calculator does the arithmetic and shows the timing rules; it does not judge whether a new rent is fair.
Pick where the home is, then whether the rent is paid monthly, weekly or every four weeks. The yearly figure counts 12 monthly payments, 52 weekly payments or 13 four-weekly payments.
To see what a percentage rise does, choose ‘By a percentage’ and enter it, for example 3.8 for 3.8%. To check a figure your landlord has proposed, choose ‘From a new rent’ and enter it: you get the percentage it represents.
Below the result, the calculator shows the rules of the nation you chose: at least two months’ notice in England and Wales, at least three months in Scotland and Northern Ireland, and no more than one increase a year.
The rules shown are for private tenancies: assured periodic tenancies in England, periodic standard contracts in Wales, private residential tenancies in Scotland and private tenancies in Northern Ireland. Social housing, regulated tenancies with a rent set by a rent officer, and business leases follow other rules.
New rent = current rent × (100 + percentage) ÷ 100, rounded to the nearest penny (a half penny rounds up).
Percentage = (new rent − current rent) ÷ current rent × 100.
Increase over a year = increase per payment × 12 for a monthly rent, 52 for a weekly rent or 13 for a rent paid every four weeks.
£1,200.00 × 105 ÷ 100 = £1,260.00, so the rent goes up by £60.00 a month, or £720.00 over a year. In Scotland the landlord must give at least three months’ notice, and the rent cannot go up again within 12 months. On a weekly rent of £250.00 in England, a proposed new rent of £265.00 is a 6% increase: £15.00 a week, or £780.00 over 52 weeks.
In England, at least two months, on Form 4A. In Wales, at least two months under a periodic standard contract. In Scotland, at least three months, in a rent-increase notice. In Northern Ireland, at least three months, in writing.
In England, once a year, and not in the first year of the tenancy. In Wales, once a new rent has started, the next cannot start for at least a year. In Scotland, no more than once in 12 months. In Northern Ireland, not within 12 months of the start of the tenancy or of the last increase.
In England, a tenant who thinks the proposed rent is above the open market rent can ask the First-tier Tribunal to decide. In Scotland, you can refer a rent-increase notice to a rent officer within 21 days of receiving it, and Scottish Ministers can designate rent control areas where increases are restricted. This calculator does not check whether a rent is fair.
In England, not for an assured tenancy: since 1 May 2026 a term that puts the rent up other than through the Form 4A process has no effect, and an increase agreed under a rent review clause before 1 May 2026 that would take effect after it does not apply. Elsewhere, check your agreement and the rules above. To see what an inflation figure would do, look up the CPI 12-month rate on the ONS website and enter it as the percentage.
Divide the difference by the current rent and multiply by 100. A rise from £950.00 to £1,000.00 is £50.00 ÷ £950.00 × 100 = 5.26%. Choose ‘From a new rent’ and the calculator does it for you.
This calculator gives general information, not legal, tax, financial or accounting advice. Your tenancy agreement and the type of tenancy decide which rules apply: if in doubt, check the official guidance for your nation or ask an adviser.
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