Direct answer: DSCR = Net Operating Income (NOI) divided by annual debt service; a “good” DSCR is generally at or above 1.0, and many lenders prefer 1.15–1.25 or higher for investment property loans.

How to calculate it
– Net Operating Income (NOI) = Gross rental income (including typical vacancy allowance) + other property income (parking, laundry) – operating expenses (property taxes, insurance, utilities the owner pays, maintenance, management fees, reserves). Do NOT include mortgage principal & interest in operating expenses.
– Annual Debt Service = total of the year’s principal + interest payments on the mortgage.
– DSCR = NOI / Annual Debt Service. You can calculate monthly by using monthly NOI and monthly mortgage payment, then multiply by 12 or just keep the ratio the same.

What the numbers mean
– DSCR >= 1.0: property generates enough income to cover debt payments.
– DSCR < 1.0: property does not cover debt; owner must subsidize payments.
– Typical lender thresholds:
– Some programs allow DSCR around 1.0 (income covers payments).
– Most conventional/investment underwriters prefer 1.15–1.25 minimum.
– 1.3–1.5+ is considered strong and gives underwriters more comfort.
– Higher DSCR improves ability to qualify for larger loans or more favorable loan structure.

Ways to improve DSCR
– Increase effective rent or reduce vacancy (market rents, lower turnover).
– Cut operating expenses (shop insurance, reduce management costs).
– Lower debt service (longer term loan, lower payment structure, or smaller loan amount).
– Add legitimate ancillary income (storage, laundry).

Lenders may use standardized assumptions for vacancy and reserves when calculating NOI, so check specific program rules when running numbers.

The Debt Service Coverage Ratio (DSCR) measures whether an investment property generates enough rental income to cover its mortgage payment. It’s calculated by dividing the property’s gross rental income by the total monthly debt obligations.

**The DSCR Formula:**

DSCR = Monthly Rental Income ÷ Monthly Debt Payment (PITI)

For example, if a property rents for $2,400/month and the mortgage payment (including principal, interest, taxes, and insurance) is $2,000/month, the DSCR would be 1.2 ($2,400 ÷ $2,000).

**What the Numbers Mean:**

– **Below 1.0** = Negative cash flow (property doesn’t cover its own payment)
– **1.0** = Break-even (income exactly equals payment)
– **Above 1.0** = Positive cash flow (property generates surplus income)

**What Lenders Consider “Good”:**

Most DSCR loan programs require minimum ratios between 0.75-1.0, though requirements vary by lender and loan structure:

– **1.25 or higher** = Strong ratio, typically qualifies for better loan terms
– **1.0-1.24** = Acceptable for many programs, considered neutral
– **0.75-0.99** = Below break-even but some programs allow this with compensating factors like larger down payments or strong reserves
– **Below 0.75** = Generally difficult to finance

**Important Calculation Notes:**

Lenders typically use the lower of actual rental income or market rent (determined by appraisal). Some lenders allow 75-80% of gross rent to account for vacancy, while others use 100% of the gross rent figure. Long-term leases with established tenants may strengthen your application.

The higher your DSCR, the more cushion you have for vacancies, repairs, and market fluctuations. A ratio of 1.25 means you’re generating 25% more income than needed to cover the debt, providing a comfortable margin for investment property ownership.

The Debt Service Coverage Ratio (DSCR) is calculated by dividing a property’s gross rental income by its total housing debt. Generally, a “good” DSCR ratio is 1.25 or higher, as this indicates the property generates enough income to cover its expenses with a comfortable buffer.

The formula is straightforward:

**DSCR = Gross Rental Income / PITI**

Here’s a breakdown of what goes into that calculation:

* **Gross Rental Income:** This is the total monthly rent collected from the property. For a purchase, lenders typically use the market rent value determined by an appraiser on the appraisal report. For a refinance, they will often use the lower of either the current lease agreement amount or the appraiser’s market rent estimate.
* **PITI (The Debt):** This is the total monthly housing payment. It’s an acronym for Principal, Interest, Taxes, and Insurance. If the property is part of a homeowners association (HOA), the monthly HOA dues are also included in this figure.

While specific requirements vary by loan program, here are some common benchmarks for what lenders consider a good ratio:

* **1.25 or Higher:** This is a common target for the most favorable loan terms. It shows the property generates 25% more income than is needed to cover its debt, indicating strong positive cash flow.
* **1.0:** A ratio of 1.0 means the rental income exactly covers the PITI payment. The property breaks even. Some loan programs will accept this, often considered the minimum threshold.
* **Below 1.0:** Some specialized programs may allow for a DSCR below 1.0 (e.g., 0.80). These are designed for investors in high-appreciation areas or those who plan to increase rents. These loans typically require stronger compensating factors, such as a larger down payment, excellent credit, and significant cash reserves.