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Rent Increase Calculator

Calculate your new rent after a percent increase

How it is calculated

The tool applies a single percentage to your current monthly rent: monthly increase = rent × pct ÷ 100, new rent = rent + monthly increase, and annual increase = monthly increase × 12. Rent is a monthly amount in dollars and pct is the percentage the landlord proposes. Rent must be above zero and the percentage cannot be negative, so a rent cut is not calculated. The tool does not know any local cap on increases, notice period, or whether utilities are included; it only does the arithmetic on the figures you enter, so check your own area's rules separately.

Worked example

Current rent is 1,450 a month and the landlord announces a 6% increase. Step 1: 1,450 × 6 ÷ 100 = 87.00, the monthly increase, shown as $87.00. Step 2: new rent = 1,450 + 87 = $1,537.00. Step 3: over twelve months the extra cost is 87 × 12 = $1,044.00.

Try this example →

Common mistakes

  • Entering the new rent in the current-rent field, which compounds the increase on top of itself.
  • Typing the increase as a dollar amount instead of a percentage; 87 in the percentage field means an 87% rise.
  • Forgetting that the annual figure assumes the new rent applies for all 12 months, so a mid-year increase costs less in that year.
  • Entering a decrease as a negative percentage; the tool returns no result for it.
  • Comparing percentages across leases with different rents; a small percentage on a high rent can be a larger dollar jump.

About this calculator

The math is a straightforward percentage increase: new rent = current rent × (1 + increase% / 100). The calculator also reports the flat dollar increase per month and multiplies that by 12 to show the added cost over a full year — the number that actually hits a household budget.

Tenants use it the moment a renewal notice arrives to gauge whether an increase is in line with local rent-control caps or typical market adjustments (often 3-5% annually in many U.S. cities), while landlords and property managers use the same formula to model revenue when setting new lease terms across a building or portfolio.

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Comments (1)

  • Editorial team

    The tool shows one year, but a rise compounds because next year's percentage applies to the new rent. Entering the new rent again with the same 6 percent, 1,537 becomes 1,629.22, so two renewals add far more than twice the first. It also knows nothing about local caps on increases or notice periods, so check those separately. It also helps to set the annual increase against the one-off costs of moving. How large was your latest increase?

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