If you're financing an investment property, lenders don't care much about your personal income. They care whether the property pays for itself. The debt service coverage ratio (DSCR) measures exactly that: how well a property's rental income covers its mortgage payments. Our DSCR calculator estimates your ratio, net operating income, and monthly cash flow so you know where you stand before you apply.
DSCR Loan Calculator
Calculate your Debt Service Coverage Ratio to see if your rental property qualifies for a DSCR loan.
| DSCR Range | Status | Typical Terms |
|---|---|---|
| < 1.0 | Does Not Qualify | Loan denied — property cash flows negative |
| 1.0 – 1.24 | Marginal | Some lenders approve; higher rate, larger reserve |
| 1.25 – 1.49 | Strong | Most lenders approve; standard DSCR pricing |
| ≥ 1.50 | Excellent | Best rates and terms; maximum lender confidence |
Important DSCR terms to know
Debt service coverage ratio (DSCR): The core metric DSCR lenders use to evaluate a loan. It's calculated by dividing net operating income (NOI) by annual debt service. A DSCR of 1.0 means the property exactly breaks even — income covers the mortgage, nothing more. Most lenders want to see at least 1.25.
Net operating income (NOI): Your effective gross rent minus operating expenses (taxes, insurance, HOA, and maintenance). This is the income figure lenders use — not your gross rent.
Effective gross rent: Your monthly rent multiplied by 12, minus a vacancy allowance. A 5% vacancy rate is a common assumption, accounting for the realistic likelihood that the unit won't be occupied every month of the year.
Vacancy rate: The estimated percentage of the year the property sits empty. Even well-performing rentals factor in some vacancy — most lenders and underwriters use 5–10%.
Annual debt service: The total principal and interest payments due on the loan over a year. This is the denominator in the DSCR formula.
Operating expenses: The ongoing costs of owning the property — property taxes, homeowners insurance, HOA dues, and maintenance. A common rule of thumb for maintenance is 1% of property value per year.
Monthly cash flow: What's left over after subtracting your monthly mortgage payment from your monthly NOI. Positive cash flow means the property is generating income beyond its debt obligations — that's the goal.
Down payment: DSCR loans typically require 20–30% down, more than a standard conventional loan. The larger down payment reduces lender risk on an investment property with no personal income verification.
DSCR lender thresholds
Your DSCR ratio determines what loan terms (if any) you can qualify for:
| DSCR range | Status | Typical terms |
|---|---|---|
| Below 1.0 | Does not qualify | Loan denied — property cash flows negative |
| 1.0–1.24 | Marginal | Some lenders approve; higher rate, larger reserve requirement |
| 1.25–1.49 | Strong | Most lenders approve; standard DSCR pricing |
| 1.50+ | Excellent | Best rates and terms; maximum lender confidence |
How to get help with a DSCR loan
DSCR loans are a niche product. Not every lender offers them, and terms vary significantly. Working with a mortgage broker who has experience with investment property financing can help you find lenders that match your ratio and property type.
Best Interest Financial specializes in this kind of deal. With decades of experience and over $1 billion in closed loans, their team knows how to identify solutions that large retail banks miss, including options for borrowers with marginal DSCRs. Talk with a Best Interest loan officer about DSCR financing.