Rent Increase Calculator

Calculate new rent after increase with CPI comparison and 5-year projection.

By Konstantin Iakovlev · Updated April 2026 · Source: BLS

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Increase Type
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New Rent

$1,575.00

Increase

$75.00 (5.0%)

Analysis

Monthly Increase$75.00
Annual Increase$900.00
vs CPI1.8% above CPI
Year 1$1,575.00
Year 2$1,653.75
Year 3$1,736.44
Year 4$1,823.26
Year 5$1,914.42

Use the Rent Increase Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

Rent adjustments hit a budget hard when inflation is in play, and this tool lets tenants and landlords see exactly how an increase plays out. It projects rent for up to five years and lines that projection up against historical and projected CPI data so both sides can negotiate from the same set of facts. Heading into 2026, that kind of clarity makes budgeting and market analysis far more reliable.

Feed in your current rent and the increase percentage you expect, and a compound growth model carries those figures forward year by year. The latest CPI data anchors the comparison, using the projected 2.5% for 2026 and the years that follow as a benchmark against the proposed increases. The underlying formula is New Rent = Current Rent * (1 + Increase Rate).

CPI is a national average, and your local market can move quite differently from it. Treat it as one input rather than the whole answer, and look into local rent control rules and the typical increases in your own area. The thing most people overlook is how those increases compound across several years, which makes the long-run total larger than a single year suggests.

Example: Apartment Rent Increase Scenario

  1. 1 Step 1: Input your Current Monthly Rent ($1,500), Annual Rent Increase Rate (5%), and CPI for 2026 (2.5%).
  2. 2 Step 2: The calculator applies the 5% increase annually. For 2026, the rent becomes $1,500 * (1 + 0.05) = $1,575. The projected CPI-adjusted rent for 2026 would be $1,500 * (1 + 0.025) = $1,537.50.
  3. 3 Step 3: Your projected rent for 2026 is $1,575. After five years, your rent would be $1,914.42 (compounded).
  4. 4 Step 4: Comparing your projected rent of $1,575 for 2026 to the CPI-adjusted rent of $1,537.50 for the same year, you can see the proposed increase is higher than the general inflation rate. This provides valuable negotiation insight.

Source: BLS · Last updated: April 2026

Frequently Asked Questions

How much can a landlord raise rent?
In most US states, there is no cap on rent increases for market-rate housing. However, states and cities with rent control laws (California, Oregon, New York, etc.) limit annual increases, typically to 3-10% or CPI plus a percentage.
How much notice does a landlord have to give for a rent increase?
Most states require 30 days notice for month-to-month tenants. Some states require 60-90 days for increases above a certain percentage. Rent cannot be raised during a fixed-term lease unless the lease allows it.
Is a 10% rent increase normal?
A 10% increase is above the national average of 3-5% annually. It may be justified in hot rental markets or after years of below-market rent. In rent-controlled areas, 10% would likely exceed the legal maximum.

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