BNBCalc Reverse-Engineered Calculator

All formulas extracted from bnbcalc.com JavaScript bundles. Every calculation updates in real-time.

Property Details

Purchase Price ($)

Bedrooms

Bathrooms

Common Spaces

Square Feet

Financing

Down Payment (%)

Interest Rate (%)

Mortgage Length (years)

Mortgage Insurance (%)

Property Tax ($/mo)

Closing Costs (%)

Seller Credit ($)

Revenue

Nightly Rate ($)

Occupancy Rate (%)

Price Appreciation (%/yr)

Revenue Appreciation (%/yr)

Utilities ($/mo)

Internet + TV

Water/Sewer

Garbage

Electric

Gas

Other Utilities

Maintenance ($/mo)

Property Insurance

HOA

Landscaping

Pest Control

Repairs

Supplies

Software

Permits

Other

Rental Insurance

Fees (% of Revenue)

Airbnb/Platform Fee (%)

Management Fee (%)

Cleaning Cost (%)

Lodging Tax (%)

Furnishing & Setup

Cost Per Bedroom ($)

Cost Per Bathroom ($)

Cost Per Common Space ($)

Repairs & Renos ($)

Key Metrics (Year One)

Annual Cash Flow

Cash-on-Cash

Cap Rate

ROI

Investor Score

Revenue Breakdown

daily = nightlyRate × (occupancyRate / 100) monthly = daily × 30.437 annual = daily × 365.244

Expense Breakdown (Monthly)

Financing Breakdown

PMT = P × r(1+r)^n / ((1+r)^n − 1) where r = rate/12, n = years×12, P = loanAmount

Total Cash Investment

Cash Flow Breakdown (Year One)

Total Return Projection

totalReturn = cashFlow + principalPaydown + priceAppreciation + revenueAppreciation CoC = (cashFlow + revenueAppreciation) / totalCashInvestment × 100 capRate = NOI / purchasePrice × 100