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Rent Increase Calculator
Work out your new rent after an increase. Enter your current rent and either a percentage or a fixed dollar rise, then press Calculate to see the new rent and the extra cost per month and per year.
Written by TopicDrill Editorial Team·Updated June 2026
Projected monthly rent by year
Monthly rent
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How the rent increase calculator works
When a landlord proposes a higher rent, the headline percentage can hide what it really costs you. This calculator takes your current rent and the proposed rise — as a percentage or a flat amount — and shows the new monthly rent, the extra you pay each month, and the total additional cost spread across a full year.
Seeing the annual figure matters because a "small" monthly bump adds up. A $60 rise sounds minor, but it is $720 more over the year, money worth weighing against the option of moving or negotiating.
A quick example
Your rent is $1,500 and your landlord proposes a 5 percent increase. That is $75 more a month, lifting the rent to $1,575, and $900 extra across the year. Switch to a fixed increase and you can check the percentage a flat rise really represents — useful when comparing an offer against local inflation or a rent index.
Before you accept an increase
Check the rise against your local tenancy rules and your lease, confirm the notice period was met, and compare it to inflation. If the new rent stretches your budget, test it against your income with our rent affordability calculator, and see how it sits in your wider plan with the budget calculator.
Frequently asked questions
How do I calculate a rent increase percentage?
Multiply your current rent by the percentage and add it on. For a 5 percent rise on $1,500, the increase is $1,500 × 0.05 = $75, making the new rent $1,575. To find the percentage from two amounts, divide the increase by the old rent: ($1,575 − $1,500) ÷ $1,500 = 5 percent.
Is there a limit on how much rent can increase?
It depends entirely on where you live. Some cities and states have rent control or caps tied to inflation, while many areas have no limit on increases between fixed-term leases. Always check your local tenancy laws and your lease terms.
How much notice must a landlord give for a rent increase?
Notice periods are set by local law and your lease — commonly 30 to 90 days for a month-to-month tenancy. A landlord usually cannot raise rent mid-way through a fixed-term lease unless the lease specifically allows it.
Is a rent increase in line with inflation reasonable?
Many landlords tie increases to inflation or a local rent index. Comparing your proposed rise to the current inflation rate is a useful sanity check — a rise well above inflation, with no improvement to the property, is worth questioning or negotiating.
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