Enter Values

$
Annual net operating income
$
Period:
Principal + interest payments (P&I)
x
Target coverage ratio

Key Definitions

Net Operating Income (NOI):

Annual income after operating expenses, but before debt service, capital expenditures, and depreciation.

Debt Service:

Total annual principal and interest (P&I) payments. Does not include property taxes, insurance, or other escrow items (unless required by your lender).

Ryan O'Connell, CFA
Calculator by Ryan O'Connell, CFA

Results

DSCR 1.50x Strong Coverage NOI / Debt Service
Annual NOI $150,000
Annual Debt Service $100,000

Formula Breakdown

DSCR = NOI / Debt Service
Where NOI and Debt Service are measured over the same period

DSCR Guidelines (Indicative Only)

Important: DSCR requirements vary significantly by lender, property type, market conditions, and borrower profile. The ranges below are general guidelines only - always confirm requirements with your specific lender.

DSCR Range General Interpretation
< 1.00x Negative Cash Flow - NOI insufficient to cover debt
1.00x - 1.20x Thin Coverage - Little margin for income fluctuations
1.20x - 1.40x Adequate - Common minimum threshold range
1.40x - 1.75x Strong - Comfortable cushion for debt service
> 1.75x Very Strong - Significant margin of safety

Note: Agency lenders (Fannie Mae, Freddie Mac) typically publish their DSCR requirements. Other lenders' requirements vary and should be confirmed directly.

Understanding DSCR

DSCR Formula

DSCR = NOI / Debt Service

Where both NOI and Debt Service are measured over the same period (typically annual)

What is DSCR?

Debt Service Coverage Ratio (DSCR) measures a property's ability to generate enough income to cover its debt obligations. A DSCR of 1.0x means the property's NOI exactly equals its debt service - there's no cushion for unexpected expenses or income shortfalls.

Lenders use DSCR as a primary underwriting metric because it directly measures the property's ability to pay the loan, independent of the borrower's other income sources.

Why DSCR Matters

  • Loan qualification: Most commercial lenders require minimum DSCR (often around 1.25x for agency programs; varies by lender)
  • Loan sizing: DSCR directly limits how much you can borrow
  • Risk assessment: Higher DSCR provides buffer against income declines
  • Interest rates: Strong DSCR may qualify for better terms

DSCR vs LTV

DSCR and LTV (Loan-to-Value) serve different purposes in underwriting:

  • DSCR: Measures cash flow adequacy (ability to pay)
  • LTV: Measures collateral coverage (asset protection)

A loan might meet LTV requirements but fail DSCR (or vice versa). Most commercial loans must satisfy both constraints - the more restrictive one typically determines maximum loan size.

Improving DSCR

To improve your DSCR:

  • Increase NOI: Raise rents, reduce vacancies, cut operating expenses
  • Reduce debt service: Larger down payment, longer amortization, lower rate
  • Restructure financing: Consider interest-only periods (if available)

Note: Interest-only periods reduce near-term debt service but don't build equity. Discuss trade-offs with your lender.

Frequently Asked Questions

DSCR measures a property's ability to cover its debt obligations from operating income. It's calculated by dividing Net Operating Income (NOI) by total debt service (principal + interest payments).

A DSCR of 1.50x means the property generates 50% more income than needed to cover debt payments, providing a cushion against income fluctuations or unexpected expenses.

DSCR requirements vary significantly by lender type, property class, and market conditions. Agency lenders (Fannie Mae, Freddie Mac) commonly require around 1.25x for standard multifamily programs, though specific products may vary.

Non-agency lenders have more variable requirements. Higher-risk properties (repositioning, unstabilized) may require 1.35x or higher, while lower-risk assets might qualify at 1.20x. Always confirm specific requirements with your lender.

Debt service typically includes principal and interest (P&I) payments on the mortgage. For DSCR calculations, use the same period for both NOI and debt service (annual is most common).

Some lenders may define debt service to include required escrows (taxes, insurance) - this is sometimes called "total debt service" or "gross debt service." Confirm your lender's definition when calculating DSCR for loan applications.

DSCR directly constrains your maximum loan amount. Given a required DSCR and your property's NOI, you can calculate the maximum debt service: Max Debt Service = NOI / Required DSCR.

From maximum debt service, you can work backward to determine maximum loan amount given the interest rate and amortization. This is why improving NOI can increase your borrowing capacity.

Yes, DSCR below 1.0x means the property's NOI is insufficient to cover debt service - you'd need outside funds to make loan payments. This represents negative cash flow from the property's operations.

Properties with DSCR below 1.0x typically cannot qualify for conventional commercial financing. Some situations (value-add acquisitions, lease-up properties) may use projected stabilized DSCR, but current DSCR constraints usually still apply.

Traditional residential mortgages primarily consider the borrower's personal income (Debt-to-Income ratio). DSCR loans for investment properties focus on the property's income instead of the borrower's W-2 or tax returns.

This makes DSCR loans popular for real estate investors who may have complex tax situations or multiple properties. The trade-off is often higher interest rates and down payment requirements compared to owner-occupied financing.

Disclaimer

This calculator provides estimates for educational purposes only. Actual DSCR requirements, loan terms, and approval decisions depend on your specific lender, property type, market conditions, and financial situation. Always consult with qualified financial professionals and lenders for advice specific to your situation.