How it works
Enter the current monthly rent, choose a percentage or fixed-amount increase, and the calculator shows the new monthly rent, the increase amount, and the annual totals.
Property management calculator
Rent Increase Calculator
This free rent increase calculator works out a new rent amount from a percentage or fixed-dollar increase, and shows the added monthly and annual income right alongside it. Use it to compare a few scenarios before deciding on a number — no account needed.
Calculator inputs
Rent increase limits and notice requirements vary by state and city. This tool only does the math/tracking.
Formula
Percentage method: New Rent = Current Rent × (1 + Increase % ÷ 100). Fixed method: New Rent = Current Rent + Increase Amount. Annual figures multiply the monthly amounts by 12.
Example
At $2,000 monthly rent with a 5% increase, the new monthly rent is $2,100 — a $100 monthly increase and $1,200 more per year.
Important assumptions
Use the percentage method when the increase is defined as a rate of the current rent, and the fixed method when it's a set dollar amount. This calculator performs the math only — it does not determine what increase is permitted under local law or a lease agreement.
How to Calculate a Rent Increase
A percentage increase scales with the current rent; a fixed increase adds the same dollar amount no matter what the current rent is. For a percentage increase, multiply the current rent by (1 + the percentage ÷ 100). For a fixed increase, just add the flat amount.
Worked example: a unit currently renting for $1,750 a month gets a 4% increase. New rent = $1,750 × 1.04 = $1,820 — a $70 monthly increase, or $840 more over a year. A flat $75 increase on the same unit would instead land at $1,825.
What to Include Before Raising Rent
- Whether the increase is defined as a percentage or a flat dollar amount in the lease or your notice
- The effective date the new rent amount starts
- The new annual total, for your own budgeting or reporting
- Any required notice period and rent-increase limits in your area — this calculator does the math only, see the FAQs below
Common Mistakes When Calculating a Rent Increase
- Applying a percentage increase to the wrong base rent (e.g. last year’s rent instead of current rent)
- Mixing up a percentage increase with a flat dollar increase when comparing two scenarios
- Forgetting to check local notice-period and rent-increase-limit rules before sending a notice
- Not documenting the new rent amount anywhere once it takes effect
Track upcoming renewals and the proposed new rent in the Lease Renewal Tracker, and once a payment comes in at the new amount, log it in the Tenant Ledger.
Frequently asked questions
Enter the current rent, choose a percentage or fixed-dollar increase, and the calculator shows the new amount instantly. At $1,750 monthly rent with a 4% increase, the new rent is $1,820 — a $70 monthly increase, or $840 more over a year.
A percentage increase scales with the current rent — 5% of $2,000 is $100. A fixed increase adds the same dollar amount regardless of what the current rent is, so the same $100 increase would apply whether rent were $1,500 or $2,500.
No, this is a math-only calculator. Rent increase limits and required notice periods vary by location and lease terms, so check your local regulations and lease agreement separately — this tool only calculates the new amount once you've decided on it.
No, that's a completely separate concern. This tool only calculates a new rent figure from a percentage or fixed amount; to track lease end dates and renewal timing across all your tenants instead, use the Lease Renewal Tracker alongside it.
Yes, the percentage field accepts decimals, so an increase like 3.5% calculates just as precisely as a round number such as 5%. That's useful when an agreement specifies a rate tied to something like a cost-of-living index rather than a clean whole-number percentage.
Yes, it does. Alongside the new monthly rent, it shows current and new annual rent and the total annual increase in dollars, so you can see the full-year effect of the change on your income, not just the smaller-looking per-month difference.
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