Updated March 23, 2026
How to Calculate Your DSCR Ratio (With Examples)
The DSCR ratio is the single most important number for qualifying for a DSCR loan. It tells the lender whether the property generates enough income to cover the mortgage payment. Here's exactly how to calculate it.
The DSCR Formula
DSCR = Monthly Gross Rental Income ÷ Monthly PITIA. PITIA stands for Principal + Interest + Taxes + Insurance + HOA (if applicable). That's it - one number divided by another.
Example 1: Single-Family Home
Property: $300,000 single-family home. Rent: $2,200/month. Mortgage P&I: $1,580/month (at 6.25%, 30-year fixed, $225K loan). Property taxes: $250/month. Insurance: $120/month. HOA: $0. Total PITIA: $1,950/month. DSCR = $2,200 ÷ $1,950 = 1.13. This property has a DSCR of 1.13, meaning it generates 13% more income than needed to cover the payment. This qualifies comfortably for a DSCR loan.
Example 2: Duplex
Property: $400,000 duplex. Rent: $1,800/month per unit ($3,600 total). Mortgage P&I: $1,975/month (at 6.0%, 30-year fixed, $300K loan). Property taxes: $400/month. Insurance: $175/month. HOA: $0. Total PITIA: $2,550/month. DSCR = $3,600 ÷ $2,550 = 1.41. A DSCR of 1.41 is excellent and will qualify for the best rates available.
What DSCR Do You Need?
A DSCR of 1.25+ gets the best rates. A DSCR of 1.0 means the property breaks even (rent equals payment). Below 1.0 means the property doesn't fully cover the payment - you'll need to cover the difference out of pocket each month. Programs are available with no minimum DSCR, even below 0.75. The rate adjusts based on the ratio - higher DSCR means lower rate.
Where Does the Rent Number Come From?
The lender doesn't just take your word for the rent amount. An appraiser provides a market rent estimate as part of the property appraisal. This is based on comparable rental properties in the area. If the property is already rented, the existing lease can support the value but the appraiser still provides a market rent analysis. For properties with no rental history (new construction, vacant, recently renovated), the appraiser's market rent estimate is what's used.
How to Improve Your DSCR Ratio
There are several ways to improve your DSCR and qualify for better rates. Put more money down - a lower loan amount means lower P&I, which improves the ratio. Choose a longer prepayment penalty (3-5 years) to get a lower rate, which lowers P&I. Shop for better insurance rates. Appeal property tax assessments if they're high. For multi-unit properties, maximize occupancy and rent. Consider interest-only payments, which significantly lower the monthly obligation and improve DSCR.
Calculate Your DSCR Instantly
Use the free DSCR calculator at dscrdirect.net - enter your monthly rent, P&I, taxes, insurance, and HOA to see your ratio instantly. Then use the pricer to see what rate you qualify for with that DSCR from hundreds of lenders.
DSCR Direct has a free DSCR calculator and instant rate pricer. Calculate your ratio, then see the lowest rate you qualify for from hundreds of lenders.
Today's DSCR pricing
Purchase
5.999% (6.142% APR)
Rate/Term Refinance
6.000% (6.145% APR)
Cash-Out Refinance
5.999% (6.142% APR)
75% LTV. 780 FICO, 1.25 DSCR, 30-year fixed, 5-year prepay. Your rate may vary.
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