Rent Increase Calculator
Free online Rent Increase Calculator. No sign-up needed, and it runs in your browser.
Work out a new rent from a percentage rise, or the percentage from the new rent — per month and per year, over several years, and against a limit.
About Rent Increase Calculator
Helps tenants check a renewal letter and landlords plan a fair rise. Enter the current rent and either the percentage or the new figure, and it shows the change per month and per year side by side. The multi-year table shows how a steady yearly rise builds up, and if you type the legal or contract limit that applies to you, it tells you whether the rise is within it and by how much it goes over.
How to use Rent Increase Calculator
- Type your Rent now and choose whether it's Paid Per month or Per year.
- Under I know, pick The increase in % or The new rent, then type that figure.
- For a percentage rise, optionally choose 3, 5 or 10 years under Show years, and add a Legal or contract limit %.
- Pick your Currency and read the new rent, the change per month and per year, and the limit check.
How your data is handled
Everything is worked out in your browser as you type. Your rent and the figures you type aren't sent anywhere or saved; only a currency you pick is remembered on your device for next time.
Limits and accuracy
- Results are estimates, not legal advice. Rent rules differ by country, city and contract, so check the official rules.
- The limit check only compares with the percentage you type; it doesn't know your local law or index-based rules.
- The multi-year table assumes the same percentage every year, which real rents rarely follow.
- Service charges, bills and one-off fees aren't included unless you add them to the rent.
Questions and answers
How do I work out a rent increase percentage?
Divide the new rent by the current rent, take away 1 and multiply by 100. Going from 1,500 to 1,575 a month is (1,575 ÷ 1,500 − 1) × 100 = 5%. Choose The new rent under I know and the tool does it for you.
Is there a legal limit on how much my rent can go up?
It depends where you live. Some places publish a yearly cap, such as Ontario's 2.1% guideline for 2026, while in Dubai the allowed rise depends on how far your rent is below the average for similar homes, up to 20%. Elsewhere there may be no cap, only notice rules.
What does the multi-year table show?
It applies the same percentage every year, so each rise is worked out on the previous year's rent. At 5% a year, a rent of 1,000 becomes about 1,276 after 5 years, a rise of 27.6% rather than 25%.