DSCR Calculator

Understand Property Debt Coverage Before You Buy

A DSCR calculator helps you answer one of the most important questions in real estate investing: does the property generate enough income to support its loan payments? Instead of guessing, you can quickly compare net operating income to annual debt service and see whether a deal looks fragile, borderline, or comfortably covered.

What the Calculator Measures

This tool accounts for the numbers investors and lenders actually review, including rental income, other property income, vacancy loss, and operating expenses. From there, it calculates effective gross income, net operating income, and the final debt service coverage ratio. If you already know your NOI or annual debt service, you can enter those directly and save time.

Why DSCR Matters

For lenders, the ratio is a simple way to judge repayment strength. For investors, it’s a fast screening metric that can highlight risk before you spend more time underwriting a property. A strong debt service coverage ratio usually means there’s more room for unexpected costs, slower leasing, or short-term income swings.

Built for Quick Deal Analysis

Whether you’re reviewing a long-term rental, small multifamily property, or another income-producing asset, this DSCR calculator makes it easier to evaluate financing support with clear, immediate results.

FAQs

What is a good DSCR for an investment property?

A DSCR of 1.00 means the property’s net operating income exactly matches its annual debt payments, so there’s no cushion. Many lenders prefer to see at least 1.20 to 1.25, because that suggests the property can absorb normal fluctuations in rent, vacancy, or expenses. What counts as acceptable can still vary by lender, market, property type, and loan program.

Should I include mortgage payments in operating expenses?

No. Mortgage principal and interest should not be included in operating expenses when calculating NOI. Operating expenses cover the costs of running the property, such as taxes, insurance, maintenance, management, utilities, HOA dues, and reserves. Debt service is handled separately, and DSCR works by comparing NOI against that separate annual loan obligation.

Can I use this calculator if I only know the loan details and not annual debt service?

Yes. If you have the loan amount, interest rate, and loan term, the calculator can estimate the mortgage payment and convert it into annual debt service automatically. That makes it useful early in deal screening, when you may not have a lender’s final amortization schedule yet but still want a solid DSCR estimate.