Lease Renewal Calculator
Project your new rent after a renewal increase and the extra cost over the lease term.
What this calculator does
The Lease Renewal Calculator estimates your result instantly from the values you enter, using standard real estate formulas. Project your new rent after a renewal increase and the extra cost over the lease term. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate for planning rather than financial advice.
Result
About Lease Renewal Calculator
The Lease Renewal Calculator projects what a rent increase does at renewal time. Enter your current monthly rent and the proposed increase percentage, and it applies the increase to produce the new monthly rent plus the extra cost per year.
Even a small percentage compounds into real money over twelve months, which is exactly the figure to weigh before signing. The calculator shows both the new monthly amount and the annual difference so the impact is visible on both timescales.
Type the current rent and the increase, press Calculate, and read the renewed rent with the yearly add-on cost.
Formula & Mathematical Calculation
New Monthly Rent = Current Monthly Rent × (1 + Renewal Increase % ÷ 100)
Extra Cost per Year = (New Monthly Rent − Current Monthly Rent) × 12
Exactly the two fields on this form. The engine computes directly from the inputs without a validation branch.
Calculation Example
If your current rent is $1,400 and the renewal raises it by 4%, the new rent is $1,400 × 1.04 = $1,456 per month. The extra $56 per month amounts to ($1,456 − $1,400) × 12 = $672 more per year.
Key Benefits
- Applies a percentage increase in one step so the renewed rent is exact rather than eyeballed.
- Shows the annual extra cost — the monthly difference multiplied by 12 — which is the figure that matters for budgeting.
- Restates the increase and both results in a plain-language interpretation line.
- Works for any increase percentage you enter, including fractional values.
How to Use this Calculator
-
Enter the current rent
Type your present monthly rent in the Current Monthly Rent ($) field, for example 1400. -
Enter the renewal increase
Type the proposed percentage increase in the Renewal Increase (%) field, for example 4. Decimals are accepted. -
Press Calculate
The tool multiplies your rent by one plus the increase divided by 100, then multiplies the monthly difference by 12 to show the yearly extra cost. -
Compare scenarios
Re-run with different percentages to see how each proposed increase changes the monthly rent and the annual cost.
Assumptions & Limitations
What the calculation assumes
- Every value you enter is treated as an exact, known amount.
- Rates and contributions are assumed to stay constant for the whole period unless the form asks for them separately.
- Results use standard financial formulas and ignore fees, penalties and promotional terms that are not entered above.
- Inflation, tax changes and market volatility are not modelled unless a field for them is provided.
- Amounts are unit-agnostic: results are returned in the same currency you enter.
What it does not cover
- Lease Renewal Calculator produces estimates for education and planning, not a quote, offer or professional advice.
- Real-world outcomes differ when fees, taxes, rounding rules or provider-specific terms apply.
- Local regulations and tax rules vary by country and change over time; verify current rules for your jurisdiction.
- Figures are only as accurate as the inputs you supply — check them before acting on the result.
- For decisions with lasting financial impact, confirm the numbers with a qualified professional.
Frequently Asked Questions
Free to use, no account needed. Calculations run in your browser, so nothing you type is sent to a server. Results are estimates — how we build and check our calculators.
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Next step: browse the full Real Estate calculators or read the related guides for context before you decide.