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Last updated: June 4, 2026

Cap Rate Calculator

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Cap Rate Calculator: estimate returns and test pricing fast

Hi, I’m Rachel. This tool answers two quick questions: What’s the capitalization rate on a property you’re eyeing, and at a target cap rate, what price makes sense? You’ll enter annual Net Operating Income and either a purchase price or a target cap, then compare.

Quick start: plug in NOI and price to see cap rate

Cap rate shows the property’s unlevered return before financing. It’s the annual Net Operating Income (NOI) divided by the Property Value / Price. You can also reverse it: use a Target Cap Rate to back into an implied value.

  • Net Operating Income (annual): income minus operating expenses (before debt, taxes, capex).
  • Property Value / Price: current value or offer price.
  • Target Cap Rate (%): your required return to price the deal.

How the math works and what the outputs mean

This calculator follows two simple formulas:

  • Cap Rate = Net Operating Income (annual) ÷ Property Value / Price
  • Implied Value @ Target Cap = Net Operating Income (annual) ÷ (Target Cap Rate (%) ÷ 100)

Outputs:

  • Cap Rate: a decimal percentage (e.g., 6.00%).
  • Implied Value @ Target Cap: a dollar price that fits your required cap.

Worked example with realistic numbers and units

Example: compute cap rate and implied value

Inputs:

  • Net Operating Income (annual) = $45,000
  • Property Value / Price = $750,000
  • Target Cap Rate (%) = 6

Calculations:

  • Cap Rate = 45,000 ÷ 750,000 = 0.06 = 6.00%
  • Implied Value @ 6% = 45,000 ÷ 0.06 = $750,000

Interpretation: At a $750k price and $45k NOI, you’re at a 6% cap. If you require 6%, the implied value matches $750k.

Scenario comparison: tweak income or price, see impact

Raise NOI, hold price

  • NOI = $50,000; Price = $750,000 → Cap Rate = 6.67%
  • Takeaway: Improving operations (rent bumps, vacancy cuts) boosts cap rate.

Hold NOI, pay more

  • NOI = $45,000; Price = $800,000 → Cap Rate = 5.63%
  • Takeaway: Paying up compresses the yield; ensure the market and risk justify it.

Cap rate calculator limits, assumptions, and pitfalls

  • NOI must be positive and annualized. Negative or zero NOI makes cap rate meaningless.
  • Property Value / Price must be greater than $0; division by zero is undefined.
  • Target Cap Rate (%) must be greater than 0 to compute an implied value.
  • Cap rate ignores financing, income taxes, and near-term capital expenditures.
  • NOI should exclude debt service and large one-time items; mixing these skews results.
  • Market context matters: location, growth prospects, and risk aren’t captured by one number.

Interpreting the number: practical ranges and quick tips

  • Higher cap rate generally means higher current yield and higher perceived risk.
  • Lower cap rate often reflects stronger markets, lower risk, or growth expectations.
  • First adjustments to test: vacancy rate, market rent assumptions, property taxes, and repairs/maintenance—these drive NOI the most.
  • Use the implied value to anchor offers: If market pricing is far above your implied value, you’re paying for growth—validate that story.

When to use a commercial property ROI estimator instead

Cap rate is a snapshot. If you expect rent growth, renovations, or changing expenses, a multi-year return model (cash-on-cash, IRR) captures timing and leverage. Use cap rate for quick screening; use full pro formas for final decisions.

Step-by-step: how to use this tool without overthinking it

  1. Enter Net Operating Income (annual) based on realistic, stabilized operations.
  2. Type your Property Value / Price to see the current cap rate.
  3. Optionally add a Target Cap Rate (%) to get an implied value for offers.
  4. Iterate: adjust NOI or price until the deal meets your return needs.

Glossary quick hits

  • NOI: Income after operating expenses; excludes financing, income taxes, and major capex.
  • Cap Rate: NOI divided by price; an unlevered yield.
  • Implied Value: The price consistent with your target cap and NOI.

Semantic variants used in this guide: capitalization rate calculator, property cap rate tool, real estate cap rate, investment property yield, rental yield calculator, commercial real estate cap, income property valuation.

Frequently Asked Questions

What is a good cap rate for rental property?

It depends on market risk and growth prospects. Prime areas often trade at lower caps (4–6%), while riskier or smaller markets run higher (7–10%+). Compare to local comps.

Does cap rate include the mortgage payment?

No. Cap rate is unlevered: NOI divided by price. NOI excludes debt service. For leverage effects, look at cash-on-cash or IRR.

How do I calculate NOI correctly?

Start with gross rent, subtract vacancy/credit loss, then operating expenses (taxes, insurance, utilities if landlord-paid, repairs, management). Exclude mortgage, income taxes, and major capex.

Can I use cap rate for value-add deals?

Use it cautiously. Compute cap on stabilized NOI, not on current pre-renovation income. Also model multi-year returns to capture timing and costs.

What does an implied value at target cap tell me?

It’s the price that matches your required cap rate given the NOI. If asking price exceeds implied value, your yield is below target unless NOI grows.

Why is my cap rate showing as “—” or NaN?

The calculator needs positive numbers. Ensure Price > 0 and NOI is a valid annual figure. For implied value, Target Cap Rate must be greater than 0.

Cap rate vs. cash-on-cash: which should I trust?

Use both. Cap rate screens the property’s operating yield before financing. Cash-on-cash reflects your loan terms and actual equity returns.

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