Rent Increase Calculator — New Rent & Yearly Impact

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Rent increase calculator

Apply a percentage increase to the current rent and see the new monthly figure plus the monthly and annualized dollar change. Pure arithmetic — check local rules for any legal limits.

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The short answer

Last updated: July 2026

To calculate a rent increase, multiply the current rent by one plus the increase percentage: a 5% raise on $2,000 rent is $2,000 × 1.05 = $2,100 — $100 more a month and $1,200 a year. This is pure arithmetic and applies no legal cap; check your local rent-control and notice rules for any limits.

Rent increase calculator

The new rent, and what the raise adds up to.

Apply a percentage increase to the current rent and see the new monthly figure, the monthly dollar change, and what it adds over a full year.

Current monthly rent

Increase

4.0%

20%

Enter the percentage you're considering. Local rent-control or notice rules may cap or govern what you can charge — check your jurisdiction.

Input-driven result

Your inputs

Formula

Result below

New monthly rent

$2,496

$2,400 increased by 4.0%.

Monthly increase

+$96

How much more the tenant pays each month.

Added over a year

+$1,152

The monthly increase across all 12 months.

Monthly rent before and after increase

Current monthly rent

$2,400

Monthly increase

$96

New monthly rent

$2,496

Estimate based on your inputs. Not a promise of results.

Estimate only — this is arithmetic on the numbers you enter. It does not check any legal limit. Rent-control caps, notice periods, and lease terms can restrict or govern an increase; confirm what your local rules require.

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How it works

How this tool works.

A rent increase is easy to state as a percentage and harder to feel until you see the dollars. A few percent sounds small, but across twelve months it adds up — for the tenant deciding whether to renew and for you weighing the increase against the cost of a turnover.

Enter the current rent and the percentage you’re considering, and this calculator shows the new monthly rent, the monthly dollar change, and what it adds over a full year. It’s pure arithmetic on your inputs — it does not check any legal limit, so confirm what your local rules allow.

Enter the current monthly rent and set the increase percentage with the slider.

New rent: current rent × (1 + increase %) — the calculator shows the new monthly figure.

It also shows the monthly dollar change and that change multiplied by 12 for the annual impact.

Every output is an estimate from your inputs; the tool applies no legal cap and makes no judgment about whether an increase is allowed.

Make the result useful

Rent-increase decision context

Current rent is the recurring amount before the proposed change.

Proposed rent is the new recurring amount for the modeled term.

Change date and notice timing are separate legal and lease questions.

Annual impact assumes the new rent is collected for the full modeled year.

The assumptions that move this result

Current rent

Existing recurring rent.

Proposed rent

New recurring amount.

Change date

Planned effective date.

Term

Months used for annualized impact.

Calculation lens

monthly change = proposed rent − current rent; annual change = monthly change × 12

Use the output as a documented scenario result, not a guarantee.

Read the number in context

Worked scenario

Scenario: $1,800 to $1,875 is $75/month or $900/year.

Edge case

Edge case: one vacant month can exceed the annual gain from a small increase.

Does not determine whether an increase or notice is lawful.

Before you act

• Check lease and local rules.

• Compare market evidence.

• Model turnover and vacancy cost.

Worked formula

monthly change = proposed rent − current rent; annual change = monthly change × 12

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Is this a forecast?

No. It calculates the assumptions you enter.

Can it replace professional review?

No. Use current records and qualified advice.

What should I save?

Keep the assumptions and source records used for the decision.

Answers

Questions, answered plainly.

How much can I legally raise the rent?

This calculator can’t answer that — it’s pure arithmetic and applies no legal limits. Rent-control and rent-stabilization rules, required notice periods, and lease terms vary widely by state and city and can cap or govern an increase. Check your local rules, and when in doubt, confirm with a local attorney.

Do I need to give notice before raising the rent?

Often, yes — many places require written notice a set number of days before an increase takes effect, and the amount of notice can depend on the size of the increase. The specifics are set by state and local law and your lease, so verify the notice requirement where your property is.

Should I use a percentage or a flat dollar amount?

Either works — this tool takes a percentage and shows the resulting dollars so you can see both. Percentages scale with the current rent; a flat amount is simpler to explain to a tenant. Pick whichever you can justify, within whatever your local rules and lease allow.

Is a rent increase worth the risk of losing the tenant?

That’s the real trade-off. Pair this with the turnover cost calculator: a modest increase can be worth less than what a vacancy, make-ready, and re-leasing would cost you. The numbers here help you weigh the added rent against the risk of a move-out.

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