Real Estate Break-Even Analysis
Calculates what percentage of gross rental income is consumed by debt service and operating expenses. Lenders and investors use it to gauge how much vacancy a property can absorb before cash flow turns negative.
About this calculator
The break-even ratio (BER) tells you the occupancy rate at which a rental property's income exactly covers all its obligations — both operating expenses and mortgage payments. The formula is: BER (%) = ((totalDebtService + operatingExpenses) / grossIncome) × 100. A BER of 85%, for example, means the property breaks even at 85% occupancy; anything above that generates positive cash flow. Most lenders prefer a BER below 85%, as it indicates a margin of safety against vacancy and unexpected costs. Unlike cap rate, BER incorporates debt service, making it a financing-sensitive metric. It is especially useful when stress-testing a property against market downturns or rising interest rates.
How to use
A rental property has an annual mortgage payment of $18,000, operating expenses of $6,000, and gross rental income of $30,000. 1. Total obligations = $18,000 + $6,000 = $24,000 2. BER = ($24,000 / $30,000) × 100 = 80% Enter 18000, 6000, and 30000 to confirm an 80% break-even ratio. This means the property can tolerate a 20% vacancy rate before it starts losing money — a comfortable buffer by most lender standards.
Frequently asked questions
What break-even ratio do lenders consider acceptable for investment properties?
Most commercial and investment-property lenders prefer a break-even ratio of 85% or below, meaning the property can withstand up to 15% vacancy before cash flow goes negative. Some conservative lenders set the threshold at 80%. A lower BER provides greater resilience against rent drops, vacancy spikes, or unexpected repairs, which is why it is a standard underwriting metric alongside debt-service coverage ratio (DSCR).
How does break-even ratio differ from debt-service coverage ratio?
Break-even ratio expresses obligations as a percentage of income, while debt-service coverage ratio (DSCR) expresses income as a multiple of debt obligations (DSCR = NOI / debt service). A BER of 80% corresponds roughly to a DSCR of 1.25 on the NOI portion. Both metrics assess financial resilience, but BER is broader because it includes operating expenses in the numerator, not just debt payments.
Why is a low break-even ratio important during economic downturns?
During recessions or local market softening, vacancy rates can rise sharply and achievable rents may fall. A property with a 95% BER has almost no cushion — any vacancy or rent reduction immediately produces negative cash flow. Conversely, a property at 75% BER can absorb significant disruption while still servicing its debt. Stress-testing your BER against a 10–20% rent reduction scenario before purchasing is a prudent practice for any rental investor.