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Cap Rate Calculator

Enter your property's purchase price and income to instantly calculate your capitalization rate, NOI, and monthly cash flow.

Property Income

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Detailed Expenses

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Excellent Cap Rate

8%capitalization rate

Strong investmentThis property shows strong income potential relative to its price.

ExcellentStrong investment

Cap Rate Quality

0%15%+
Poor
Fair
Good
Excellent
Exceptional
$24,000
Annual NOI
Income minus operating expenses
$2,000
Monthly Cash Flow
NOI divided by 12

Market Comparison

Your cap rate vs market average5.5%–6.5%
0%Above Market15%
$300,000
Purchase Price
$36,000
Gross Income
$24,000
Net Operating Income

What Is Cap Rate?

Cap rate — short for capitalization rate — is one of the most important metrics in real estate investing. It measures the expected annual rate of return on a property based on the income it generates, independent of how the purchase is financed.

Because cap rate ignores mortgage payments, it provides an apples-to-apples way to compare investment properties regardless of whether you're paying cash, using a conventional loan, or leveraging seller financing. This makes it the go-to metric for investors analyzing deals across different markets and price points.

A higher cap rate generally signals a higher potential return, but it can also indicate higher risk. Properties in prime urban locations typically have lower cap rates (3–5%) because they carry less risk, while properties in secondary markets or with deferred maintenance may show higher cap rates (8–12%) to compensate investors for the additional risk.

Cap Rate Formula

The Formula
Cap Rate = NOI ÷ Purchase Price × 100
Where NOI = Gross Rental Income − Operating Expenses

Net Operating Income (NOI)is your property's gross rental income minus all operating expenses — including property taxes, insurance, maintenance, vacancy losses, and property management fees. It does not include mortgage payments or capital expenditures.

For example, a property purchased for $300,000 that generates $36,000/year in rent with $12,000/year in operating expenses has an NOI of $24,000 and a cap rate of 8.0%.

Learn more: What Is a Good Cap Rate for Rental Properties?

What Is a Good Cap Rate?

There's no single "right" cap rate — it depends on the market, property type, and your investment goals. Here's a general framework:

0%
Poor (04%)
Below average return
4%
Fair (46%)
Average market rate
6%
Good (68%)
Above average return
8%
Excellent (810%)
Strong investment
10%
Exceptional (1015%)
Outstanding return

The national average cap rate typically falls between 5.5% and 6.5%, though this varies widely by metro area and property class. Coastal cities like San Francisco and New York often see cap rates under 4%, while Midwest markets may consistently yield 8%+.

How to Improve Your Cap Rate

Since cap rate = NOI ÷ price, you can improve it by either increasing income or reducing expenses. Here are proven strategies:

Raise rents to market rate
Research comparable rentals in your area. If your rents are below market, implement strategic increases at lease renewal.
Reduce vacancy
Improve your tenant screening and retention. Even a 2% reduction in vacancy rate can significantly boost NOI.
Add income streams
Consider laundry facilities, parking fees, pet rent, storage units, or utility bill-back programs.
Lower operating costs
Shop insurance quotes annually, appeal property tax assessments, and implement energy-efficient upgrades.
Self-manage (when feasible)
Eliminating the 8–10% property management fee can add 1%+ to your cap rate on smaller portfolios.
Negotiate a better purchase price
The most direct way to improve cap rate. A 10% price reduction on a $300k property increases cap rate by ~1 full point.

Frequently Asked Questions

Cap rate (capitalization rate) tells you the expected rate of return on an investment property based on its income. A higher cap rate generally indicates a higher potential return but may also carry more risk. It's the most common metric real estate investors use to compare properties.

A 10% cap rate is considered excellent for most markets. However, very high cap rates can sometimes indicate higher risk — the property may be in a less desirable location or require significant maintenance. Always consider cap rate alongside other factors like location, tenant quality, and property condition.

Cap rate measures the return based on the property's income relative to its market value, without considering financing. ROI (Return on Investment) factors in how you purchased the property — including your down payment, mortgage terms, and closing costs. Cap rate is better for comparing properties; ROI is better for comparing your actual investment performance.

No. Cap rate is calculated using Net Operating Income (NOI) divided by the property's purchase price or market value. NOI does not include debt service (mortgage payments). This is intentional — it lets you compare properties fairly regardless of how they're financed.

NOI = Gross Rental Income − Operating Expenses. Operating expenses include property tax, insurance, maintenance, property management fees, and vacancy losses. NOI does NOT include mortgage payments, capital expenditures, or depreciation.

Calculators are a start. RentrIQ tracks actuals.

Track your actual cap rate automatically

RentrIQ connects to your bank, logs every rent payment, and automatically calculates your real cap rate, NOI, and cash flow — updated every month with zero manual entry. Free forever for 1 property.

Real-time cap rate trackingAutomated NOI calculationExpense categorizationPortfolio analytics

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