sfrcalc.com

Multi-Family Calculator

Underwrite a multi-unit property — gross potential rent down to per-door cash flow, cap rate, and DSCR.
Purchase
$
$
$
Financing
%
%
yrs
Income
$/mo
$
%
Operating expenses
$
$
$/mo
%
%
%
$/mo
Monthly cash flow
$0
Cash-on-cash return
0%
Cap rate
0%
DSCR
0.00
Price per unit
$0
Gross potential rent
Other income
Vacancy loss
Effective gross income
Property taxes
Insurance
Utilities
Property management
Repairs & maintenance
CapEx reserve
Admin / other
Net operating income
Debt service (P&I)
Monthly cash flow
Loan amount
Down payment
Closing costs
Rehab
Total cash needed
Gross rent multiplier
Cap rate and price-per-unit use purchase price + rehab as the cost basis. GRM (gross rent multiplier) is purchase price divided by annual gross potential rent — lower is generally cheaper relative to income, but always cross-check against local comps.
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