Rent Increase Calculator
Enter the current rent and the increase you have in mind — as a percent or a dollar amount — and this calculator gives you the new rent, the increase expressed both ways, and the annualized rate. Then pick your state and it answers the question the math can't: whether the increase is legal where you are, and how much written notice you owe before it takes effect. Every rule links its statute.
New rent: $1,560.00
The math
- Increase: $1,500.00 × 4% = $60.00 per month
- New rent: $1,500.00 + $60.00 = $1,560.00
- Annualized rate: 4% × 12 ÷ 12 months = 4% per year (a 12-month gap, so the annualized rate equals the increase itself)
Against what rents actually did this year
Your annualized rate of 4% compares to: U.S. rent inflation of 2.84% over the last year (BLS CPI rent index, June 2026), typical asking rents up 2.2% (Zillow ZORI, June 2026), and median new-lease rents down 1.1% with a 7.2% vacancy rate (Apartment List, July 2026). You're at or near the market's pace — an increase tenants can verify is normal.Sources: BLS series CUUR0000SEHA · Zillow Research · Apartment List Research — as of 2026-08-12. National yardsticks; your ZIP's number can differ meaningfully (the $19 report measures your exact address).
The retention math — the number most landlords skip
This increase is worth $720.00 in its first year. If pressing it led this tenant to leave and the unit sat empty at the new rent, that entire gain would be gone after 14 days of vacancy — before counting cleaning, repairs, and re-listing, which often cost a month's rent on their own. That's not an argument against raising; it's the honest counterweight that makes small, regular, well-explained increases beat big catch-ups. The Rent Increase Report runs this same math against your address's real market estimate.
Why the annualized number matters
A $100 increase means something different after 8 months than after 2 years. Annualizing puts increases on a common yardstick: it scales the percent change to a 12-month rate. If you raised rent 4% after 24 months, that is about 2% per year — useful context when a tenant asks how the increase compares to inflation, and useful to you when deciding whether small regular increases beat one big catch-up. This calculator uses the simple method (percent change × 12 ÷ months since last increase), which is the number most people mean in this context.
The legal picture, in three sentences
Only three states cap how much rent can rise statewide: California (5% + regional CPI, never more than 10%), Oregon (9.5% for 2026), and Washington (9.683% for 2026) — plus New York's presumption-based rules in NYC and opt-in cities, DC's rent stabilization, and local ordinances in roughly 100 New Jersey towns and a few counties elsewhere. Everywhere else, the amount is up to you — but the notice isn't: every state has a rule for how far in advance a month-to-month increase must be announced, from North Carolina's 7 days to Oregon and Washington's 90. The state selector above gives you both answers with the statute linked.
Want the whole thing handled?
The Rent Increase Report ($19, once) takes it from here: the market estimate for your exact address with the comparables shown, three increase options with the first-year math, your state's legal check with the send-by date, the notice written and dated — and the one-page summary your tenant gets, so the increase explains itself. Optional certified mailing with return receipt.
Before you send the increase
- Mind the notice clock. Several states peg notice to the rental period — the notice must land before a rent day, so the real lead time is often longer than the day count.
- Mid-lease increases are generally off the table. A fixed-term lease locks the rent until renewal unless the lease itself says otherwise, in every state we track.
- Put it in writing. A dated letter with the old rent, new rent, and effective date. Use the free rent increase notice generator — it fills in the letter and computes your send-by deadline, or the lease renewal letter if the increase rides a renewal.
Not legal advice. This calculator does arithmetic only. It does not know your state's notice requirements or whether your unit is covered by any rent cap or stabilization rule. Check your local law before sending an increase notice.
Common questions
How much notice do I have to give for a rent increase?
It varies more than most landlords expect: 7 days in North Carolina, 30 in most states, 60 in Georgia, 90 in Oregon and Washington — and California and New York scale the notice with the size of the increase or length of tenancy. Pick your state in the calculator above for the exact rule with the statute linked. For a fixed-term lease, the rent generally cannot change until renewal unless the lease says otherwise.
Is there a limit on how much I can raise rent?
Statewide caps exist in exactly three states — California (5% + regional CPI, max 10%), Oregon (9.5% for 2026), and Washington (9.683% for 2026) — plus New York's Good Cause rules in covered localities, DC's rent stabilization, and municipal ordinances in parts of New Jersey, Maryland, and St. Paul. Everywhere else there is no limit on the amount, though an increase used to retaliate or discriminate is illegal anywhere.
What's a reasonable rent increase?
There is no universal number, and we won't invent one. The honest inputs are: what comparable units near you rent for, your actual cost changes (taxes, insurance, maintenance), and what losing a good tenant to turnover would cost you — vacancy, cleaning, and re-listing often exceed a year's worth of a modest increase. Run the comparison for your own numbers.
Percent increase or flat dollar increase — does it matter?
The tenant pays the same either way; it is about clarity. Dollar amounts are concrete ('rent goes from $1,500 to $1,560'). Percentages make comparisons easier. This calculator gives you both, so state both in your letter.
What to do next
- Put the increase in a renewal letter — a dated letter with old rent, new rent, and effective date is the required form in most states — and the version tenants take best.
- Read: should you raise rent every year? — what landlords who skipped increases say happened, and why small-and-predictable keeps tenants.
- Get reminded before each renewal window — a free account flags the 60–90 day window so the increase decision happens on schedule, not after it.