Rent Increase Calculator: New Rent and Projection
How much will my rent be after a 5% increase? Choose a percentage or a fixed amount, enter the current rent and see the new rent, the extra yearly cost and a year-by-year projection.
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Formula
- Percentage:
new rent = current rent × (1 + increase ÷ 100); yearyiscurrent rent × (1 + increase ÷ 100)^y. - Fixed amount:
new rent = current rent + increase; yearyiscurrent rent + increase × y. - Increase as a percent:
increase ÷ current rent × 100. - Total rent over the period: the sum of each year's monthly rent × 12 (years 1 to N, not counting the current year).
Each year's rent is rounded to cents.
Worked example
Rent of 1,500 with a 5% increase each year for 5 years:
- Year 1: 1,500 × 1.05 = 1,575 (75 more a month, 900 more over a year).
- Years 2 to 5: 1,653.75, 1,736.44, 1,823.26, 1,914.42.
A fixed increase of 120 on 1,500 is 120 ÷ 1,500 = 8%, giving 1,620, 1,740, 1,860 over three years.
When to use it
Use this page to check a notice you have received, to plan your own rent increases as a landlord, or to see what repeated yearly increases add up to. For a one-off change between any two numbers, the percentage increase calculator is the general tool. The prorated rent calculator handles partial months.
Second example
A fixed increase of 150 on a rent of 2,000 is 7.5%, giving 2,150. Repeated for three years the rent is 2,150, 2,300 and 2,450, while a 7.5% yearly increase compounds to 2,150, 2,311.25 and 2,484.59.
Common mistakes
- Adding the percentage to the old rent twice.
- Comparing a percentage increase with a fixed-amount increase without converting.
- Forgetting that percentage increases compound.
- Ignoring local limits and notice rules, which this page does not apply.
Frequently asked questions
How do I calculate a rent increase by percentage?
Multiply the rent by 1 plus the percentage. A 5% increase on 1,500 is 1,500 × 1.05 = 1,575, which is 75 more a month and 900 more a year.
How do I turn a fixed increase into a percentage?
Divide the increase by the current rent. An increase of 120 on a rent of 1,500 is 120 ÷ 1,500 = 8%, so the new rent is 1,620.
How does the yearly projection work?
With a percentage, the same percentage is applied every year, so it compounds: 1,000 at 10% gives 1,100, 1,210 and 1,331. With a fixed amount, the same amount is added each year: 1,500 plus 120 gives 1,620, 1,740 and 1,860.
Is there a limit on how much rent can go up?
Rules differ by place and lease, and this calculator does not apply any. Check your lease and local rules for notice periods and allowed increases.
What is a 5% rent increase on 1,800?
The new rent is 1,800 × 1.05 = 1,890, which is 90 more a month and 1,080 more a year.
What percentage is a rent increase from 2,000 to 2,150?
Divide the increase by the current rent: 150 ÷ 2,000 = 7.5%. Enter the fixed amount in this calculator to see the percentage and a projection of future years.
How do I calculate a rent increase in Excel?
For a percentage use =rent*(1+pct), such as =1800*(1+5%). For a percentage between two rents use =(new-old)/old, such as =(2150-2000)/2000, which returns 7.5%.