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SailsAndShore
Free tool · real estate investors

Cap Rate Calculator

Type in the numbers. Get the cap rate. Decide if it pencils.

Every rental has a cap rate. Most investors calculate it wrong.

Property
Annual expenses
Financing
Results
Cap Rate5.73%
Cash-on-Cash Return-1.05%
Net Operating Income$17,176/yr
Annual Cash Flow (after debt)$-787/yr
Gross Rent Multiplier10.4
DSCR (Debt Service Coverage)0.96
Monthly Mortgage Payment$1,497
Down Payment Required$75,000
Quick read

Cap rate 4-6%, normal for secondary metro markets. DSCR below 1.2, most lenders won't finance below this. Negative cash flow, deal only works if you expect appreciation.

How it works

Cap rate, capitalization rate, is the annual net operating income divided by the property purchase price. It answers one question: if you bought this property in cash, what percentage return would it produce annually before financing? A 6% cap rate means the property produces $6,000 of annual NOI for every $100,000 of purchase price. It's the industry-standard first-pass metric for whether a rental deal pencils.

  • 01**Net Operating Income (NOI)** = annual rent minus vacancy, taxes, insurance, maintenance, and property management. NOT mortgage payment.
  • 02**Cap Rate** = NOI / Purchase Price × 100
  • 03**Cash-on-Cash Return** = Annual Cash Flow (after mortgage) / Cash Invested × 100
  • 04**Gross Rent Multiplier (GRM)** = Purchase Price / Annual Rent

Cap rate ranges (2026 US averages): under 4% is Class A / prime coastal, 5-7% is normal secondary markets, 8-10%+ is tertiary markets or heavier-lift rentals. A 6.5% cap rate is roughly the national average.

When you're ready for the full workbook

Rental Property Landlord Toolkit

Tenant directory, rent collection log, unit turnover checklist, and a maintenance request tracker per address.

See the full $8.63 workbook →

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