Rent Increase Calculator
Rent increase % = (new rent − current rent) ÷ current rent × 100. Enter both rents or a %, then pick your state to see its notice rule and rent cap.
Enter your current rent and the new rent (or %) to see the increase.
How it works: 3 steps
Difference
$1,620 − $1,500
+$120 / mo
Divide
$120 ÷ $1,500
0.08
× 100
0.08 × 100
+8%
What an increase costs on $1,500 rent
Where rent increases are capped statewide
California
5% + local CPI, max 10%
Civ. Code § 1947.12 · exemptions apply
Oregon
7% + CPI, max 10% (9.5% for 2026)
ORS 90.323 · exemptions apply
Washington
7% + CPI, max 10%
RCW 59.18.700 · exemptions apply
Washington, D.C.
CPI-W + 2%, max 10% (stabilized units)
D.C. Code § 42-3502.08 · exemptions apply
Everywhere else: no statewide cap on the amount; notice rules vary by state (pick yours in the calculator). Local rent control can apply in some cities.
Rent increase FAQ
How do I calculate a rent increase percentage?
Subtract the current rent from the new rent, divide by the current rent and multiply by 100. Example: $1,500 to $1,620 is $120 ÷ $1,500 × 100 = 8%. That is $120 more per month and $1,440 more per year.
How much can a landlord raise rent?
Most states set no limit on the amount. California, Oregon and Washington have statewide yearly caps for covered units (never more than 10%), and Washington, D.C. limits increases for rent-stabilized units. Some cities have their own rent control. Pick your state in the calculator to see the verified rule and the statute.
How much notice is needed for a rent increase?
It depends on the state and on your lease. Common periods are 30, 60 or 90 days of written notice, and in many states a month-to-month increase simply needs the same notice as ending the tenancy. During a fixed-term lease the rent usually cannot change unless the lease allows it. Notice rules by state
What is a normal rent increase per year?
There is no legal "normal". Where caps exist they are tied to inflation: the California, Oregon and Washington formulas start from 5% or 7% plus CPI, with a 10% ceiling. Use the % mode to compare offers and the per-year figure to budget.
Can my landlord raise the rent in the middle of a lease?
Usually not, unless the lease has a clause that allows it. Read your rent or renewal clause; our lease check flags increase clauses that may not hold up in your state.
Renewing at a higher rent? Check the lease first
Increase, renewal and fee clauses are written into your lease. Our check flags clauses that may not hold up in your state.
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General information only, not legal advice. Your lease, state and local law decide what increase and notice apply.