What Is DSCR?
DSCR (debt service coverage ratio) is a property's net operating income divided by its annual loan payments. It is used when lenders size or approve rental and commercial loans, including DSCR loans that qualify on property income, and matters because a ratio below 1.0 means the income does not cover the mortgage.
DSCR in plain English
DSCR asks whether a rental pays its own mortgage. Divide the property's yearly NOI by its yearly loan payments: 1.00 means income exactly covers the payments, and 1.25 means there is 25% to spare.
DSCR lenders use the ratio to qualify a loan on the property's income instead of the borrower's paycheck.
Advanced explanation
DSCR = NOI ÷ annual debt service (principal and interest). A ratio of 1.00× means NOI exactly covers the payments. Commercial and DSCR lenders set minimum coverage ratios and may size the loan to that minimum, sometimes at a stressed rate; some DSCR loan programs compute the ratio from qualifying market rent rather than in-place NOI.
Formula
DSCR = NOI ÷ Annual Debt Service- NOI
- Annual net operating income (some lenders use market rent instead).
- Annual Debt Service
- Twelve months of principal and interest; some lenders also include taxes, insurance and HOA dues.
Related forms: Maximum Annual Debt Service = NOI ÷ Minimum DSCR.
Worked example
DSCR on a rental loan
Illustrative example - round numbers, not current market data. Calculated with Reaixo's calculator engines.
Assumptions
- Net operating income
- $28,800 a year
- Loan
- $300,000 at 7.00%, 30 years
| Step | Calculation | Result |
|---|---|---|
| 1. Monthly principal and interest | $300,000 at 7.00% over 360 months | $1,995.91 |
| 2. Annual debt service | $1,995.91 × 12 | $23,951 |
| 3. DSCR | $28,800 ÷ $23,951 | 1.20× |
| 4. Debt service allowed at a 1.25× minimum | $28,800 ÷ 1.25 | $23,040 |
DSCR: 1.20×. NOI covers the mortgage 1.20×, leaving about $4,849 a year of cushion. A lender that requires 1.25× would allow at most $23,040 of annual debt service, so this loan would need to be smaller or the rate lower.
What this calculation leaves out
- Lenders calculate DSCR their own way - some use market rent instead of actual NOI, and some include taxes, insurance and HOA dues in "debt service".
- Minimum ratios vary by lender and loan program; 1.20× to 1.25× is common but not a rule.
Try it: DSCR with your own numbers
Interactive and illustrative: change any value and the results update instantly in your browser. The figures come from the same engines as REAIXO's full calculators.
DSCR stress test
Debt service coverage ratio compares NOI with the yearly mortgage payments. Lenders often want 1.25× or more; the test shows how fast it drops when rent, vacancy, expenses or the rate move.
- DSCR
- 1.26×
- At or above 1.25×
- NOI per year
- $23,454
- Debt service per year
- $18,680
- Rent -15%1.02× · Covers the debt, below 1.25×
- Rent -10%1.10× · Covers the debt, below 1.25×
- Current rent1.26× · At or above 1.25×
- Rent +5%1.34× · At or above 1.25×
- 0%1.34× · At or above 1.25×
- 5%1.26× · At or above 1.25×
- 10%1.17× · Covers the debt, below 1.25×
- 15%1.09× · Covers the debt, below 1.25×
- Current expenses1.26× · At or above 1.25×
- Expenses +15%1.17× · Covers the debt, below 1.25×
- Expenses +30%1.08× · Covers the debt, below 1.25×
- 6.75% (current)1.26× · At or above 1.25×
- 7.75%1.14× · Covers the debt, below 1.25×
- 8.75%1.04× · Covers the debt, below 1.25×
Show the numbers as a table
| Change | Scenario | DSCR | Cash flow / month |
|---|---|---|---|
| Rent | Rent -15% | 1.02× | −$95 |
| Rent | Rent -10% | 1.10× | $22 |
| Rent | Current rent | 1.26× | $255 |
| Rent | Rent +5% | 1.34× | $372 |
| Vacancy | 0% | 1.34× | $378 |
| Vacancy | 5% | 1.26× | $255 |
| Vacancy | 10% | 1.17× | $132 |
| Vacancy | 15% | 1.09× | $9 |
| Expenses | Current expenses | 1.26× | $255 |
| Expenses | Expenses +15% | 1.17× | $121 |
| Expenses | Expenses +30% | 1.08× | −$13 |
| Interest rate | 6.75% (current) | 1.26× | $255 |
| Interest rate | 7.75% | 1.14× | $93 |
| Interest rate | 8.75% | 1.04× | −$76 |
Formula
DSCR = NOI ÷ Annual debt service (principal and interest)Assumptions
- 30-year fixed loan, no points; one unit with no other income, HOA or utilities.
- Vacancy is taken off gross rent; management, maintenance and the capital-expenditure reserve are a share of collected rent.
- Each scenario changes one input and keeps the rest; real stress usually comes in combinations.
- Lender DSCR minimums vary from about 1.00× to 1.40×.
Why it matters
A DSCR above 1.0 means the property generates more income than its debt payments require; most lenders want 1.2 or higher for a DSCR loan.
The lender's minimum DSCR often caps the loan size. If NOI is $28,800 and the lender requires 1.25×, annual payments cannot exceed $23,040 - so a higher rate means a smaller loan and a bigger down payment.
What it means for you
What happens if something goes wrong?
If NOI falls after closing and DSCR drops below a covenant on a commercial loan, the lender may restrict distributions or require a paydown. Read the loan documents.
What investors should know
Ask each lender for its exact DSCR formula and minimum before you apply - the same property can pass with one lender and fail with another.
Common mistakes
- Assuming every lender calculates DSCR the same way.
- Using optimistic rent; lenders use an appraiser's rent estimate or the lease.
- Forgetting that a rate increase lowers DSCR on an adjustable or not-yet-locked loan.
Compare and common questions
DSCR: frequently asked questions
What DSCR do lenders require?
Many lenders look for at least 1.20× to 1.25×, but minimums vary by lender, property type and loan program. Some DSCR programs accept 1.00× or lower with a larger down payment or higher rate.
What does a DSCR below 1 mean?
The property's income does not cover its loan payments, so the owner must cover the shortfall from other money. Most lenders will not make a DSCR loan at that level without compensating factors.
How can I improve DSCR?
Raise NOI (higher rent, lower expenses) or lower debt service (a bigger down payment, a lower rate or a longer amortization). Each one changes the ratio directly.
Go deeper
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Where it fits
- Investing, Financing: next, Hard Money Loan.
- Commercial, Financing: before this, Debt Yield; next, Non-Recourse Loan.
More Investing Terms
Recommended next step
See NOI, debt service and DSCR for your own numbers.
Rental cash flow calculator →Apply it to a specific property: Rental property analysis.
Sources and review
No regulator defines this term; the page follows common industry practice.
Where this applies: Industry convention - no single regulatory definition. Lenders and appraisers may define inputs differently.
Last reviewed: · Updated:
Examples use illustrative figures; rules of thumb are labelled as such. Rates, limits and program rules change - confirm current figures with your lender or a qualified professional.
This definition is provided for general educational purposes and is not financial, legal, tax, or real estate advice. Verify important decisions with appropriately qualified professionals.
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