Break-Even Occupancy Calculator
Break-even occupancy is the minimum collection rate a rental property needs to cover its operating expenses and loan payments. It is a core risk metric in commercial real estate underwriting: the lower the figure, the more vacancy the property can absorb before it stops paying its own way. Enter annual operating expenses, annual debt service, and potential gross income (rent at full occupancy). The calculator returns the break-even occupancy percentage and the total costs that income must cover.
Break-even occupancy formula
Total costs = operating expenses + annual debt service
Break-even occupancy (%) = total costs / potential gross income * 100
Cushion (pts) = 100 - break-even occupancy
Operating expenses and debt service are annual figures. Potential gross income is rent at full occupancy and must be positive. The cushion shows how many percentage points of occupancy can be lost before the property fails to cover its costs.
Underwriting context
- Break-even occupancy is a standard commercial real estate risk metric used by lenders.
- Lower break-even occupancy means a larger margin of safety against vacancy.
- Many lenders prefer a break-even occupancy at or below 85 percent.
- Add a capital expenditure reserve to operating expenses for a more conservative result.
- Compare break-even occupancy to realistic market occupancy to assess deal viability.
Break-even occupancy: frequently asked questions
What is break-even occupancy?
Break-even occupancy is the minimum percentage of a property's potential gross income that must be collected to cover all operating expenses and debt service. Below this occupancy the property loses money; above it the property produces positive cash flow.
What is the break-even occupancy formula?
Break-even occupancy equals (operating expenses plus annual debt service) divided by potential gross income, expressed as a percentage. Potential gross income is the rent collectible at 100 percent occupancy.
Why is break-even occupancy important?
Lenders and investors use it to gauge a property's margin of safety. A lower break-even occupancy means the property can withstand more vacancy before failing to cover its costs, which signals lower risk.
What is a good break-even occupancy?
Lower is safer. Many lenders look for a break-even occupancy of 85 percent or below, leaving at least a 15 percentage-point cushion above expected occupancy. Acceptable levels vary by property type and market, so compare against your own underwriting standards.
Does break-even occupancy include capital expenditures?
The basic formula uses operating expenses and debt service. For a conservative view, add a reserve for capital expenditures to operating expenses before calculating, since major repairs also need to be funded from income.
Official sources
- U.S. Small Business Administration: Break-even and Cost Analysis.
- U.S. Department of Housing and Urban Development: Multifamily Housing.
Reviewed by the CalculatorHub team, edited by James Graham, 16 June 2026. See our methodology.