Gross Income
What the building brings in
This calculator sizes the income side of a property: potential gross income at full occupancy, the vacancy allowance, and the effective gross income a buyer can actually expect. Add the purchase price and it also gives you the gross rent multiplier, a quick price-to-income screen.
Browser-only estimate
Size the income before the expenses
Enter the monthly rent per unit, the number of units, other income, and vacancy. The gross income picture updates as you type.
Laundry, storage, or parking income for the whole building.
Effective gross income (annual)
$83,790
- Potential gross income
- $88,200
- Vacancy allowance
- $4,410
- Effective gross income (monthly)
- $6,983
- Gross rent multiplier
- 6.2x
Estimates only. GRM is price divided by effective gross income, a rough screening number, not a measure of profit.
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This is a browser-only estimate to help you plan. Michael “Wiz” Wisniewski pairs the math with real lender quotes, current tax and insurance figures, and a plan that fits your goals. No obligation, no pressure.
This is a browser-only estimate using the figures you enter.
Effective gross income still comes before operating expenses; it is not your profit.
Wiz compares potential gross income against real rent rolls in the Treasure Coast to South Florida market.