Rent change and projection tool
Rent Increase Calculator
Calculate a new monthly rent from a percentage, or enter old and new rent to find the percentage change. Project the same increase assumption across future years. Currency changes formatting only; it does not convert values.
Rent increase results
| Year | Monthly rent after increase | Rent paid that year | Extra versus unchanged rent |
|---|
Projection assumes the same percentage change repeats once per year. It is a scenario, not a prediction or a legal rent limit.
Rent increase formulas
New monthly rent = current monthly rent × (1 + increase percentage ÷ 100)
Increase percentage = (new rent − current rent) ÷ current rent × 100
Monthly increase = new rent − current rent
Annualized increase = monthly increase × 12
For a multi-year scenario, the calculator compounds the entered or derived percentage once per year. If the first change applies for fewer than 12 months, only the first year’s total is prorated; later projected years use 12 months at that year’s rent.
Checked examples
Five-percent increase: A monthly rent of US$2,000 increased by 5% becomes US$2,100. The increase is US$100 per month or US$1,200 for 12 months. If 5% repeats annually, the monthly rent in year 5 is US$2,552.56. Total rent across five full years is US$139,245.91, which is US$19,245.91 more than an unchanged US$2,000 monthly rent.
Find the percentage: If rent changes from US$1,850 to US$1,995, the monthly increase is US$145. The percentage increase is 145 ÷ 1,850 × 100 = 7.8378%, or about 7.84%.
How to use the projection
- Select whether you know the percentage or the new monthly rent.
- Enter the current rent and the known change.
- Choose how many months the new rent applies during the first 12 months.
- Choose a 1–30 year horizon. The table repeats the same annual percentage only to illustrate a scenario.
Important limits
- This calculator does not determine whether an increase is legal, permitted by a lease, exempt, capped, properly noticed or enforceable in any city, state, province or country.
- Local rules may depend on address, building type, tenancy dates, inflation indexes, subsidies, renovations, notice timing and other facts. Consult the applicable housing authority or qualified adviser.
- The projection assumes one identical percentage increase per year. Actual future rents may rise, fall or stay unchanged.
- Utilities, concessions, deposits, fees, moving costs, taxes and renter insurance are excluded.
- Current and new monthly rent are limited to 1 billion currency units, the increase to 0–100%, and the horizon to 1–30 whole years.
Related calculators
Check a housing budget with the Rent Affordability Calculator, compare renting with ownership using the Rent vs Buy Calculator, or calculate a general rate of change with the Percentage Calculator.