Result
$1,575.00 new monthly base rent
A 5% increase adds $75.00 per month and $900.00 across 12 months.
- Current monthly base rent
- $1,500.00
- Monthly increase
- $75.00
- Additional cost over entered period
- $900.00
- New base rent over entered period
- $18,900.00
Arithmetic estimate only. This does not determine whether an increase is permitted, properly noticed, or enforceable. Confirm the lease, notice, other recurring charges, and applicable tenant rules. Read the full disclaimer.
More
At a glance
- Cost
- Free
- Login
- Not required
- Best use
- Convert a proposed percentage rent increase into new monthly base rent and additional cost across a selected number of months.
- Output
- Browser result with print and PDF options
- Reviewed
- 2026-08-08
Result summary
Quick answer
With the sample inputs, this calculator returns $1,575.00 new monthly base rent. Current monthly base rent: $1,500.00. Use $1,575.00 new monthly base rent as the arithmetic change to base rent, then compare other renewal charges and verify the notice and lease separately.
Publisher Published by EverydayCalc Editorial Editorial standards and limitations
Each calculator shows its formula and defines the inputs. Worked examples make the math checkable. The page also names the limits that can change the result.
Last calculation review:
Review scope: formula implementation, example parity, visible assumptions, source links, and result presentation. This is editorial and calculation QA, not professional financial, tax, legal, medical, engineering, or safety review.
Results are estimates based on the inputs provided and the assumptions shown on this page. For financial, tax, legal, medical, or other high-stakes decisions, verify results with a qualified professional or official source.
Instructions
How to use this calculator
Open the short walkthrough for choosing and checking inputs.
The calculator applies the entered percentage to current base rent, rounds the new monthly rent to cents, and multiplies the monthly difference by the selected number of months.
Page guide
On this page
Jump directly to the part of the calculator you need.
Calculation details
Formula and methodology
See the exact math used to produce the result.
New monthly base rent = current base rent x (1 + increase percentage); total increase = rounded monthly increase x months at the new rent.
Before acting
Assumptions to check
Review the real-world details that can change the estimate.
The key inputs are Current monthly base rent, Proposed rent increase, Months at the new rent. Apply the percentage to base rent only, enter the months it will actually apply, add separate fee or utility changes outside the result, and verify the notice, lease, and applicable tenant rules.
More guidance Examples, methodology, and planning checks Open the worked example, review notes, reference tables, and practical next checks.
When to round up
The proposed monthly rent rounds to the nearest cent before the period total is calculated. The result covers base rent only and does not determine whether an increase is valid, properly noticed, or enforceable.
When to use this calculator
- Converting a proposed percentage to new monthly base rent
- Comparing monthly and renewal-term impact
- Separating base-rent change from other lease charges
Tips for better estimates
- Enter base rent only and compare other recurring charges separately.
- Use the number of months the new rent will actually apply.
- Read the notice and lease and check the appropriate local tenant resource.
How this calculator is reviewed
This page is checked for inputs, formulas, examples, assumptions, topic fit, and related links. For this calculator, the review also covers current base rent, percentage change, cent rounding, months at the new rent, excluded recurring fees, renewal notice, lease terms, and local tenant rules.
The sample result is covered by automated tests, and the page links to related calculators and, where available, supporting guides so readers can check the assumptions before acting. If a formula, label, or assumption looks off, send the page URL and your inputs through the contact page.
Sources to verify assumptions
Use these official and consumer-reference sources to check the terms and rules behind the inputs. The calculator result still depends on the values and method you select.
How this estimate was built
This page applies the entered percentage to base rent using integer cents, rounds the new monthly rent once, and extends that exact monthly difference across the selected period.
Worked example
Example inputs: Current monthly base rent: $1500 /month; Proposed rent increase: 5 %; Months at the new rent: 12 months. With those values, the calculator returns $1,575.00 new monthly base rent. A 5% increase adds $75.00 per month and $900.00 across 12 months.
Example scenarios
- Use $1,575.00 new monthly base rent as the new sample base rent after the entered percentage.
- Compare the monthly increase with its full renewal-term cost.
- Add separate changes in parking, pet rent, utilities, or mandatory fees outside this result.
Quick reference chart
| Sample result | $1,575.00 new monthly base rent |
|---|---|
| Current monthly base rent | $1,500.00 |
| Monthly increase | $75.00 |
| Additional cost over entered period | $900.00 |
| New base rent over entered period | $18,900.00 |
| Best next step | Compare the new base rent with the full renewal cost, including any fee or utility changes, and verify the notice and lease through the appropriate tenant resource. |
FAQs
Rent Increase Calculator questions
How much does a 5% rent increase add?
Multiply current monthly base rent by 5%, then add that amount to the current rent. This calculator performs the cent rounding and extends the difference across the entered months.
Does the result include recurring fees or utilities?
No. It changes base rent only. Compare parking, pet rent, utility billing, insurance, and other recurring lease charges separately when they also change.
Can this calculator tell me whether the increase is legal?
No. Notice rules, rent controls, lease terms, and tenant protections vary by location and property. Read the notice and lease and use the appropriate state or local tenant resource.
Why compare more than one month?
A monthly difference can look small while adding up over a renewal term. The entered month count shows that cumulative base-rent impact.
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Common planning mistakes
Applying the percentage to fees instead of base rent, comparing only one month, ignoring other renewal changes, and treating the arithmetic as a legal determination.
Cite or embed this calculator
If this calculator helps a blog post, classroom resource, forum answer, seasonal guide, or local planning page, link to the canonical calculator URL so readers can run their own numbers and check the assumptions.
EverydayCalc.org, "Rent Increase Calculator", last updated August 8, 2026, https://everydaycalc.org/calculators/rent-increase-calculator/Was this calculator helpful?
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