Commercial Mortgage Debt Coverage Ratio (DCR) Calculator
Calculate the Debt Coverage Ratio for a commercial mortgage by comparing net operating income to annual debt service. See whether your property meets the 1.20x to 1.40x DCR thresholds most commercial lenders require in 2026.
Property & Income
Use NOI from your operating statement. Do not include debt service. Need NOI? Use our NOI Calculator.
Loan Terms
Many commercial loans are interest-only during the term with a balloon at maturity.
Commercial lenders in 2026 typically require 1.20x-1.25x for stabilized properties, 1.30x-1.40x for riskier assets.
DCR Analysis
Enter NOI and loan terms and click calculate.
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Introduction
The Debt Coverage Ratio (also called Debt Service Coverage Ratio) is the number that decides whether a commercial loan gets approved and how much you can borrow. Lenders in 2026 typically require 1.20x to 1.25x for stabilized income property and 1.30x to 1.40x for riskier asset classes like hospitality and self-storage, according to the Mortgage Bankers Association and current life company and CMBS underwriting standards. A DCR below 1.0x means the property does not generate enough income to cover its debt service, and most lenders decline or require additional collateral. This calculator sizes the ratio from your NOI and loan terms and backs into the maximum loan you can support at a target DCR, which is how a commercial lender actually sizes your loan.
What This Calculator Does
This tool calculates the Debt Coverage Ratio for a commercial mortgage by dividing Net Operating Income by annual debt service. It supports both amortizing and interest-only payment structures (common in commercial bridge and perm loans), reports the DCR with a lender rating, and computes the maximum loan amount you can support at a target DCR. It also shows the loan-to-value ratio and excess cash flow so you can see the lender full picture.
The Formula
The DCR compares the cash the property generates (NOI) to the cash it must pay the lender (annual debt service). A 1.25x DCR means the property generates 25% more cash than the debt requires, which gives the lender a cushion for vacancy or expense increases. The maximum loan formula inverts the relationship: take the maximum debt service the NOI can support at the target DCR (NOI / target DCR), divide by 12 for the monthly payment, and solve the amortization formula backward for the principal. Interest-only loans simplify to max loan = max monthly debt service / monthly rate, since there is no principal amortization.
Step-by-Step Example
Enter your NOI
An office building with $385,000 of NOI (build it in the NOI calculator first).
Enter loan terms
She tests a $4,200,000 loan at 6.75%, 25-year amortization, 7-year term, on a $5,600,000 property.
Read the DCR
Annual debt service is about $352,800, so DCR = $385,000 / $352,800 = 1.09x. That is below the 1.25x minimum, so the loan is too large.
Check the max loan
At a 1.25x target, the max loan is about $3,660,000. She reduces the loan or raises the equity to clear underwriting.
Real-World Use Cases
Loan Sizing Before Application
A borrower models the maximum loan at a 1.25x DCR before approaching lenders, so the offer request matches what the property can actually support.
Interest-Only Bridge Underwriting
An investor testing a 3-year interest-only bridge loan checks whether the property NOI covers the interest-only payment at the lender required DCR.
Refinance Feasibility
An owner with a maturing balloon loan tests whether current NOI supports a refinance at today rates and the lender DCR threshold, or whether additional equity is required.
Common Mistakes to Avoid
Using residential DSCR thresholds for commercial. Residential investment lenders often accept 1.0x to 1.2x DSCR. Commercial lenders typically require 1.20x to 1.40x. Using the wrong threshold overestimates the loan you can get.
Forgetting that interest-only loans have a balloon. Many commercial loans are interest-only during the term with full principal due at maturity. The DCR looks strong during the term, but you must refinance or sell at the balloon, and rates may be higher then.
Overstating NOI to hit the DCR. Lenders re-underwrite NOI with their own vacancy and management assumptions, often lower than the borrower pro forma. Use conservative NOI or the loan will be sized down at commitment.
Ignoring the LTV cap. Even with a strong DCR, lenders cap the loan at 65% to 75% LTV for most commercial property. The binding constraint is the lower of the DCR-based max loan and the LTV-based max loan.
Frequently Asked Questions
What DCR do commercial lenders require in 2026?
Most commercial lenders require 1.20x to 1.25x for stabilized income property (office, retail, industrial, multifamily). Riskier asset classes like hospitality, self-storage, and mixed-use often require 1.30x to 1.40x. Agency and life company loans on strong multifamily can go to 1.15x to 1.20x. Below 1.20x, most lenders decline or require additional collateral or a guarantee.
What is the difference between DCR and DSCR?
They are the same ratio. Debt Coverage Ratio and Debt Service Coverage Ratio are two names for NOI divided by annual debt service. Residential investment lenders tend to use DSCR, while commercial lenders use DCR or DSCR interchangeably. The math is identical.
How is the maximum commercial loan calculated?
The maximum loan is the lower of the DCR-based loan and the LTV-based loan. The DCR-based loan is found by dividing NOI by the target DCR to get the maximum annual debt service, then solving the amortization formula backward for the principal. The LTV-based loan is the property value times the maximum LTV (typically 65% to 75%).
Does the DCR use NOI before or after reserves?
Lenders typically calculate NOI after replacement reserves, because reserves protect their collateral. Underwriting NOI is often lower than the borrower pro forma NOI because the lender adds a market management fee and a reserve even if the owner self-manages and has not been funding a reserve.
Accuracy and Disclaimer
This calculator applies standard 2026 commercial lender DCR thresholds and standard amortization math. Actual lender requirements vary by lender type (bank, life company, CMBS, agency), asset class, market, and borrower strength. Interest-only loans carry balloon risk at maturity. This is not a loan offer or financial advice. Consult a commercial mortgage broker or lender for terms on your specific property.
Conclusion
The DCR sets both the approval decision and the loan size, so it is the first number to model before you apply. Build your NOI in our NOI Calculator, then bring it here to size the loan. For residential investment property, use the DSCR Calculator, which uses a different lender threshold.
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