Rent increase calculator Calculate the new monthly rent after a percentage or fixed-dollar increase, then see the extra monthly and annual cost. This page does the arithmetic only; notice rules and legal limits vary by location.
Display currency
Result
$1,575.00 new rent
A 5% increase adds $75.00 per month ($900.00 per year).
Monthly increase
$75.00
Annual cost increase
$900.00
Effective increase rate
5%
Current annual rent
$18,000.00
Rent rules vary by location This calculator shows the math only. Lease terms, notice periods, rent control, and other legal limits can vary by city and state, so confirm the real rule set before treating any increase as final.
Rent increase calculator guide: new monthly rent and annual cost impact
A rent increase calculator helps you work out the new monthly rent after a percentage increase or a fixed-dollar increase, then shows the extra cost per month and per year. It is useful for budgeting a renewal notice, comparing offers, or checking whether a landlord's stated increase matches the arithmetic you expect.
What this rent increase calculator measures
The calculator starts with your current monthly rent and either a percentage increase or a fixed-dollar increase. From there it shows the new monthly rent, the monthly increase, and the annual cost increase. That makes it useful for searches like rent increase calculator, rent increase percentage calculator, monthly rent increase calculator, and calculate rent increase.
It does the arithmetic only. It does not decide whether a rent increase is legal, how much notice is required, or whether a rent control rule applies in your area. Those questions vary by city, state, province, lease type, and local housing rules.
New rent = current rent + fixed increase
Use this when the increase is given as a dollar amount.
New rent = current rent x (1 + increase %)
Use this when the increase is given as a percentage.
Annual cost increase = monthly increase x 12
Spreads the monthly rent increase across a full year of payments.
Percentage increase versus fixed-dollar increase
A percentage increase is common when a landlord raises rent by a stated rate, such as 5%. A fixed-dollar increase is common when the increase is stated as a specific amount, such as $75 per month. Both approaches lead to the same kind of result: a new monthly rent and a higher annual housing cost.
If you know the dollar amount, you can also work out the percentage by dividing the increase by the current rent. For example, a $100 rise on a $2,000 rent is a 5% increase. That is why a rent increase calculator is useful even when the increase is presented in different ways.
If your current monthly rent is 1,500 and the increase is 5%, the monthly increase is 75 and the new monthly rent is 1,575. Over a full year, that adds 900 to your rent bill.
If the landlord instead says the rent will rise by $75, the result is the same: the new monthly rent is 1,575 and the annual cost increase is 900. That is why this calculator supports both percentage and fixed-dollar changes.
Notice rules vary by location
Rent laws are not universal. Some places require 30, 60, or 90 days of written notice, while other places link increases to lease renewal, inflation, or local rent-control rules. The calculator does not decide which rule applies to you.
That matters because an increase can be mathematically correct and still be legally incomplete if the landlord did not give enough notice or if a local rule limits the amount. For that reason, treat this calculator as a budgeting tool first and a legal reference only after you check your local tenant rules.
This calculator does not tell you whether the increase is fair, legal, or negotiable. It does not determine whether a rent-control law applies, whether the lease can be changed mid-term, or whether the landlord has to provide a specific notice period.
It also does not compare the increase against market rent, inflation, or your affordability threshold. If you want to compare offers or plan a move, a rent comparison tool or budget calculator is the next step after this page.
Frequently asked questions
How do I calculate a rent increase?
Multiply your current rent by the increase percentage as a decimal, then add that amount to the current rent. If the increase is fixed-dollar instead of percentage-based, add the dollar amount directly.
What is the difference between a percentage increase and a fixed-dollar increase?
A percentage increase is based on the current rent, while a fixed-dollar increase is a specific amount added to the rent. Both lead to a new monthly rent, but the percentage method scales with the starting rent.
How much will a 5% rent increase add?
A 5% increase adds $5 per month for every $100 of current rent. For example, on $1,500 rent, a 5% increase adds $75 per month.
How much extra rent do I pay per year?
Multiply the monthly increase by 12. A $75 monthly increase adds $900 per year.
Does this calculator tell me if the rent increase is legal?
No. It only does the math. Rent increase rules, notice periods, and caps vary by location and lease type.
Can a landlord increase rent during a lease?
Sometimes, but only if the lease or local law allows it. In many places, rent increases happen at renewal or after proper written notice.
Why do rent increase laws vary by location?
Because rent rules are usually set by state, provincial, or local housing laws rather than by one universal national rule. That means notice periods and limits can differ from city to city.
Should I compare the new rent with my budget?
Yes. The calculator shows the size of the increase, but you still need to decide whether the new monthly rent fits your budget and whether it is competitive with similar listings.
