DSCR Calculator for Commercial Real Estate: Check Your Ratio Before You Apply

Before any commercial lender approves a refinance, they calculate your debt service coverage ratio (DSCR). This single number determines whether you qualify, what rate you’ll get, and how much you can borrow. Use the free calculator below to check your DSCR before you apply.

What Is DSCR and Why Does It Matter?

DSCR stands for Debt Service Coverage Ratio. It measures how much net income your property generates relative to its debt obligations. The formula is simple:

DSCR = Net Operating Income (NOI) ÷ Annual Debt Service

A DSCR of 1.0x means the property generates exactly enough income to cover the loan payments — nothing more. Lenders need a cushion above that to account for vacancies, unexpected expenses, and economic downturns. Most conventional lenders require a minimum DSCR of 1.20x to 1.30x, though community banks and debt funds may have different thresholds.

How to Calculate Net Operating Income (NOI)

NOI is your property’s gross rental income minus all operating expenses, before debt service. Operating expenses typically include:

• Property taxes
• Insurance
• Maintenance and repairs
• Property management fees (typically 8–10% of gross rents)
• Utilities (if paid by owner)
• Capital reserves (often 5–10% of gross rents)
• Vacancy allowance (typically 5–10%)

What doesn’t go into NOI: your mortgage payment, depreciation, or income taxes. Those come after.

DSCR Benchmarks by Lender Type

Different lenders have different DSCR floors. Knowing which type of lender to approach based on your DSCR can save you weeks of wasted applications.

• Conventional bank / credit union: Typically requires 1.25x minimum, often prefer 1.35x+
• CMBS / conduit lenders: Usually 1.25x minimum, stricter underwriting
• SBA 504: Typically 1.15x minimum (combined with other income sources)
• Debt funds / private lenders: Can go as low as 1.10x, sometimes asset-based lending below that
• Bridge lenders: May lend on below-1.0x DSCR if there’s a clear value-add or stabilization path

What to Do If Your DSCR Is Too Low

A DSCR below the lender’s minimum doesn’t automatically mean you’re stuck. Here are the levers you can pull:

Reduce operating expenses. Review your expense load — management fees, insurance, and reserves can sometimes be restructured. Even a modest expense reduction improves NOI.

Increase rents. If you have below-market leases, a rent increase strategy before refinancing can meaningfully improve your DSCR.

Reduce the loan amount. A smaller loan requires less annual debt service. If you have equity, paying down the balance improves DSCR.

Extend the amortization period. Stretching from 20 to 25 or 25 to 30 years lowers the monthly payment and debt service — which improves DSCR on the same NOI.

Use a different lender type. Debt funds and private lenders underwrite differently from banks. A DSCR that disqualifies you at a bank may work with a debt fund or bridge lender.

How RefiLoop Helps

If your DSCR is below lender requirements — or you’re not sure how lenders will view your financials — RefiLoop can help. We review your property financials, identify which lender types are realistic given your DSCR, and structure the deal to maximize approval odds. We work on commercial loans from $200,000 to $15 million across Texas, Florida, Georgia, North Carolina, Ohio, Colorado, Tennessee, and more.

Schedule a free 15-minute review and we’ll tell you exactly what to expect from the market given your numbers.

Frequently Asked Questions

What DSCR do I need to refinance my commercial property?

Most conventional lenders require a DSCR of 1.25x or higher. Some banks prefer 1.30x–1.35x. If your DSCR is between 1.10x and 1.25x, debt funds and private lenders may still be able to help. Below 1.0x, you’ll need a bridge loan, asset-based financing, or a restructuring strategy.

Does DSCR apply to all commercial property types?

Yes — DSCR is the primary underwriting metric for income-producing commercial properties: multifamily, office, retail, industrial, self-storage, and mixed-use. It’s less relevant for owner-occupied commercial real estate, where lenders focus more on business cash flow (global DSCR).

What if my property has vacancies — how does that affect DSCR?

Lenders typically apply a vacancy factor of 5–10% when calculating NOI, even if your property is fully occupied today. This stress-tests the income for future vacancies. If your property currently has significant vacancies, a bridge loan may be more appropriate while you stabilize occupancy and then refinance into permanent financing.

Can I use projected rents instead of current rents for DSCR?

Most conventional lenders use actual in-place rents, not projections. Some will consider a portion of market rent for vacant units in certain scenarios. Bridge lenders and debt funds are more flexible about underwriting to stabilized income — which is one reason they’re popular for value-add deals.