About the Break-Even Occupancy Calculator
Break-even occupancy is the share of a property’s potential rent you must actually collect to pay every operating expense and the mortgage. Below it the owner has to put cash in each month; above it the property produces cash flow. Lenders call the same figure the break-even ratio and use it alongside the debt service coverage ratio to judge how much vacancy a loan can survive.
Enter the number of units, the market rent per unit, any other monthly income, the yearly operating expenses and the monthly loan payment. The calculator returns the break-even occupancy, the minimum number of leased units, the occupancy needed just to cover operating expenses (NOI break-even), and — using your current occupancy — the cushion you have, the resulting NOI, cash flow and DSCR. The chart shows yearly cash flow from 50% to 100% occupancy.
The calculation treats operating expenses as fixed, which is close to reality for taxes, insurance, payroll and most maintenance. If some costs fall when units are empty (for example management fees charged on collected rent), the true break-even point will be slightly lower. Many lenders prefer a break-even ratio under about 85%.
With the default inputs, the break-even occupancy is 74.8%. Change any value above to recalculate instantly.
How to use the break-even occupancy calculator
- 1Enter the number of units and the market rent per unit.
- 2Add other monthly income such as laundry or parking.
- 3Enter total yearly operating expenses, excluding the mortgage.
- 4Enter the monthly mortgage payment (0 if owned free and clear).
- 5Enter your current occupancy to see the cushion, cash flow and DSCR.
Formula and method
Potential gross income (PGI) is what the property would collect at 100% occupancy: units × monthly rent plus other monthly income, times 12. Adding yearly operating expenses to yearly debt service (monthly payment × 12) and dividing by PGI gives the share of potential income you must collect to break even. Multiplying by the number of units and rounding up gives the minimum number of leased units.
NOI break-even leaves out the mortgage and shows the occupancy needed to cover operating costs alone. At your current occupancy, NOI is PGI × occupancy − operating expenses, cash flow is NOI − debt service, and DSCR is NOI ÷ debt service. Expenses are assumed not to change with occupancy.
- PGI
- Potential gross income at 100% occupancy (yearly)
- OpEx
- Yearly operating expenses, excluding debt
- DS
- Yearly debt service (principal + interest)
Worked examples
10-unit building at 93% occupancy
Ten units at $1,200 plus $300 of other income gives $147,600 of potential income. Expenses of $60,000 plus $50,400 of mortgage payments equal $110,400, which is 74.8% of potential income — at least 8 units must be leased. At 93% occupancy the building nets $26,868 a year with a DSCR of 1.53.
Highly leveraged 24-unit property
Expenses of $110,000 plus $138,000 of debt service need 90.6% of the $273,600 potential income, so 22 of 24 units must be leased. At 88% occupancy the property is 2.6 points short, losing $7,232 a year with a DSCR below 1.0.
Fourplex owned free and clear
With no mortgage, break-even occupancy equals the NOI break-even: $24,000 of expenses is 33.3% of $72,000 potential income, so only 2 of 4 units need to be leased. At 95% occupancy the fourplex nets $44,400 a year.
Frequently asked questions
What is break-even occupancy?+
Break-even occupancy is the percentage of a property’s potential rental income that must be collected to cover operating expenses and debt service. If a building needs 80% occupancy to break even, any occupancy above 80% produces positive cash flow.
What is a good break-even ratio?+
Lower is safer. Many lenders and investors look for a break-even ratio below about 85%, and under 75%–80% for older or riskier properties, so the building can absorb normal vacancy and unexpected expenses without needing extra cash.
Is break-even occupancy the same as break-even ratio?+
Yes, in rental real estate they describe the same calculation: operating expenses plus debt service divided by gross income. Some analysts divide by effective gross income instead of potential gross income, which gives a slightly higher figure.
How do I lower my break-even occupancy?+
Raise rents or other income, cut operating expenses, or reduce debt service by putting more money down, refinancing to a lower rate or extending the amortization period. Each lowers the share of potential income needed to cover costs.
How does break-even occupancy relate to DSCR?+
Both measure how much income cushion a property has over its debt. DSCR divides NOI by debt service at actual occupancy, while break-even occupancy shows how far occupancy could fall before NOI only just covers the debt.
Results are estimates for educational purposes and are not financial advice. Rates, fees and terms vary — confirm with your lender or a licensed advisor before making decisions.