How to Calculate DSCR on a Rental Property (With Real-Number Examples)
DSCR loans let real estate investors qualify on what the property earns instead of their personal tax returns. The whole approval starts with one number: the debt service coverage ratio. Here is how to calculate it yourself, step by step, with examples, so you know where a deal stands before you make an offer or apply for a refinance.
Expo Lending is a Texas-based mortgage broker offering DSCR investor financing in all 50 states. This guide is general education, not a quote or a commitment to lend. Programs and minimums vary and every loan is subject to underwriting.
The DSCR formula
DSCR = Monthly gross rent ÷ Monthly PITIA
PITIA is the full monthly housing payment on the rental:
A DSCR of 1.00 means the rent covers the payment exactly. Above 1.00, the property has a cushion. Below 1.00, the rent falls short of the payment. Many programs prefer a ratio above 1.0, and some may allow lower ratios with compensating factors like a bigger down payment or stronger reserves.
Example 1: A single-family rental
Say you are buying a single-family rental that the appraiser says will rent for $2,400 a month.
- Principal and interest: $1,450
- Property taxes: $5,400 a year = $450 a month
- Landlord insurance: $1,800 a year = $150 a month
- HOA dues: $50 a month
- PITIA = $1,450 + $450 + $150 + $50 = $2,100
- DSCR = $2,400 ÷ $2,100 = 1.14
The rent covers the full payment with about 14% to spare.
Example 2: A deal that comes in under 1.0
Same house, but the rent is $1,950. DSCR = $1,950 ÷ $2,100 = 0.93. That does not automatically kill the deal, but it changes the conversation. Here is what putting more down can do: if a larger down payment lowers principal and interest to $1,250, PITIA drops to $1,900 and DSCR becomes $1,950 ÷ $1,900 = 1.03.
All figures on this page are illustrations, not quotes. Your actual rate, payment, and program minimums depend on credit, property, loan amount, and leverage.
Where the rent number comes from
- Purchases: usually the appraiser’s market rent schedule (on a single-family home, often a Form 1007 rent survey).
- Refinances with tenants: often the current lease, compared against market rent.
- Short-term rentals: some programs use documented booking history or a short-term rental market estimate. See DSCR loans for Airbnb and short-term rentals.
- 2–4 units: rent from all units is combined and compared to one PITIA.
Residential DSCR vs. commercial DSCR
For 1–4 unit rentals, DSCR programs typically use gross rent ÷ PITIA. Larger properties such as 5+ unit apartments and other commercial buildings are usually underwritten on net operating income ÷ annual debt service, which subtracts vacancy, management, repairs, and other operating costs first. If you are looking at a bigger property, see multifamily loans and commercial real estate loans.
Why taxes and insurance matter so much
Investors often run DSCR on principal and interest alone, then get surprised. In states with high property taxes or rising insurance premiums, including Texas, taxes and insurance can be a big share of PITIA. Get a real insurance quote and check the actual tax bill (and whether a homestead exemption will drop off after you buy) before you count on a ratio.
Send the address, price or value, expected rent, and your down payment. We will run the numbers against programs available in your state. Mon–Fri 9 AM–6 PM Central.
Simple ways to raise your DSCR
- Put more down. A smaller loan means a smaller principal and interest payment.
- Shop insurance. A lower premium lowers PITIA dollar for dollar.
- Consider buying down the rate when the numbers make sense for how long you will hold.
- Watch HOA dues. High dues can sink a ratio on condos and townhomes.
- Support the rent. A signed lease or strong comparable rents help the appraiser’s market rent number.
Common DSCR mistakes
- Leaving taxes, insurance, or HOA dues out of the payment.
- Using the current owner’s tax bill when it includes a homestead exemption that will go away.
- Using peak-season Airbnb income instead of a full year.
- Forgetting reserves: many programs want months of PITIA left in the bank after closing.
Frequently asked questions
What is a good DSCR for a rental property loan?
A DSCR of 1.0 means the rent roughly covers the full housing payment (principal, interest, taxes, insurance, and any HOA dues). Many DSCR programs prefer a ratio above 1.0, and a higher ratio usually means more options. Some programs may allow a ratio below 1.0 with compensating factors such as a larger down payment or more reserves. Minimums vary by program, so your exact number depends on the loan you qualify for.
How do lenders calculate DSCR?
For 1-4 unit rentals, DSCR is usually the property's gross monthly rent divided by its monthly PITIA: principal, interest, property taxes, homeowners insurance, and association dues. Rent typically comes from a lease or the appraiser's market rent schedule, and for short-term rentals some programs use booking history or market estimates.
Is DSCR based on gross rent or net operating income?
For residential DSCR loans on 1-4 unit properties, programs typically use gross rent divided by PITIA. Commercial loans on larger properties usually use net operating income (rent minus operating expenses) divided by annual debt service, which is a different and usually stricter calculation.
Does my personal income matter for a DSCR loan?
DSCR loans qualify primarily on the property's rental income instead of your W-2s or tax returns. Programs still review credit, down payment or equity, reserves, and the property itself.
How can I improve my DSCR before applying?
The ratio gets better when rent goes up or the payment goes down. Common levers are a larger down payment, shopping homeowners or landlord insurance, buying down the rate, choosing a property with lower HOA dues, and documenting market rent with a signed lease or strong comparable rents.
Can I use Airbnb income to calculate DSCR?
Some programs allow short-term rental income, using documented booking history or a short-term rental market estimate instead of a long-term lease. Rules differ by program, property type, and local short-term rental laws.
Expo Lending LLC, NMLS #2619446. Aiden Fahimi, Broker | Mortgage Advisor, NMLS #1943973. 1000 Main St, Suite 2300 PMB 1161, Houston, TX 77002. Office (877) 732-4464 · Direct/Text (713) 885-3944. General education only, not a commitment to lend. Programs, guidelines, rates, and availability vary and are subject to underwriting. Example figures are illustrations, not quotes. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.