What a DSCR loan is
A DSCR loan is an investment-property mortgage that qualifies on the rental's income instead of yours. The lender asks one question: does the rent cover the payment, and by how much? That answer is the debt service coverage ratio. A ratio of 1.00 means the rent exactly pays the mortgage, taxes, insurance, and dues; 1.25 means it covers them with a quarter to spare.
Because no tax returns are involved, DSCR loans are popular with self-employed investors, buyers holding many properties, and anyone whose written-off rental income makes conventional underwriting difficult. The trade-off is price: rates run above owner-occupied loans, down payments start around 20 to 25%, and many carry prepayment penalties. Investors often use them as the refinance step in a BRRRR deal.
Two ways to measure DSCR
Residential DSCR lenders, who finance one to four units, mostly use gross rent ÷ PITIA. It is simple and generous: vacancy, maintenance, and management don't count against the ratio. Commercial lenders and many portfolio banks use net operating income ÷ debt service: rent after vacancy and operating costs, divided by principal and interest alone. The same property can clear one test and fail the other, so the calculator lets you switch.
Neither ratio is your profit. A 1.10 on the lender's method can still lose money once repairs and turnover arrive, which is why the spec row always shows cash flow after vacancy and operating costs.
How to use this calculator
- Enter the price, down payment, and rate quote. DSCR rates vary with the ratio, the loan-to-value, and your credit, so use a real quote when you have one.
- Pick the payment type. Interest-only payments raise the ratio by lowering the payment; many lenders offer them for the first ten years of a 30- or 40-year loan.
- Enter rent, taxes, insurance, and dues. Use the lower of the lease and market rent, the way the lender will.
- Set vacancy and operating costs. These always shape cash flow, and shape the ratio on the NOI method.
- Choose the method and the minimum. The verdict tells you whether the deal clears it and how far rent could fall before it wouldn't.
- Use the tables to restructure. The tier table gives the rent and the largest loan for each common minimum; the grid shows the ratio at other rates and down payments.
Formulas & methodology
P&I = L × r ÷ (1 − (1 + r)^−n), or L × r interest-only
PITIA = P&I + Taxes ÷ 12 + Insurance ÷ 12 + HOA
- L
- Loan amount
- r
- Annual rate ÷ 12
- n
- Term in years × 12
Lender method: DSCR = Rent ÷ PITIA
NOI method: DSCR = (Rent × (1 − vacancy − operating) − escrow) ÷ P&I
Lender method: Rent = Min × PITIA
NOI method: Rent = (Min × P&I + escrow) ÷ (1 − vacancy − operating)
Lender method: L = (Rent ÷ Min − escrow) ÷ k
NOI method: L = NOI ÷ Min ÷ k
- k
- Monthly payment per dollar borrowed
Cash flow = Rent − vacancy and operating − PITIA
Cash-on-cash = Cash flow × 12 ÷ (Down + Closing)
Escrow means monthly taxes, insurance, and dues. The largest-loan figure is what the ratio allows; lenders also cap loan-to-value, usually at 75 to 80% on a purchase, and the lower of the two limits applies.
Worked example
A $300,000 single-family rental with 25% down borrows $225,000 at 6.875% over 30 years. Principal and interest are $1,478; taxes, insurance, and dues add $400, so PITIA is $1,878. Against $2,400 of rent the lender's ratio is 1.28, which clears a 1.00 minimum with room for rent to fall $522 a month.
The commercial method reads the same deal differently. After 5% vacancy and 15% operating costs, net operating income is $1,520 a month, a ratio of 1.03, short of the 1.25 a commercial lender would want; it would need $2,810 of rent. Interest-only payments of $1,289 would lift the lender's ratio to 1.42.
| Line item | Amount |
|---|---|
| Cash to close (down + 3% closing) | $84,000 |
| PITIA | $1,878 |
| DSCR, lender method | 1.28 |
| DSCR, NOI method | 1.03 |
| Monthly cash flow after vacancy and upkeep | $42 |
| Cash-on-cash return | 0.6% |
The deal qualifies, yet it leaves only $42 a month after real-world costs. That gap between "the lender says yes" and "the property pays you" is the most important thing a DSCR calculator can show. The cap rate and rental ROI calculator takes the same deal further, into cap rate and total return.
Typical DSCR loan terms
| Term | Typical range |
|---|---|
| Minimum ratio | 1.00; better pricing from 1.20–1.25; some programs to 0.75 |
| Down payment | 20–25% on a purchase; 25–30% for cash-out refinances |
| Credit score | 620–680 minimum; best pricing from about 740 |
| Reserves | 3–12 months of PITIA, depending on loan size |
| Rate | Roughly 0.5–2 points above owner-occupied loans |
| Prepayment penalty | Common; often a 3- or 5-year step-down, buyable out with a higher rate |
Terms vary by lender and change with the market. Treat this as orientation, not a quote.
How to raise your ratio
- Put more down. A smaller loan lowers principal and interest, the largest line in PITIA. The grid under the tool shows the effect directly.
- Buy down the rate. Points paid at closing lower the payment for the life of the loan.
- Choose interest-only. It lifts the ratio quickly but builds no equity during the interest-only period.
- Shop insurance and appeal taxes. Escrow sits in the denominator too; a cheaper policy raises the ratio as surely as higher rent.
- Support the rent. A signed lease at market rent, or strong rent comparables for the appraiser, keeps the lender from using a lower figure.
DSCR FAQ
- What is a good DSCR for a rental property loan?
- Most residential DSCR lenders require at least 1.00, meaning the rent covers the full payment including taxes, insurance, and dues. A ratio of 1.20 to 1.25 or higher usually earns better pricing and a higher loan-to-value. Commercial lenders, who measure net operating income instead of gross rent, typically want 1.25.
- How do you calculate DSCR?
- Residential DSCR lenders usually divide the monthly gross rent by PITIA: principal, interest, property taxes, insurance, and association dues. Rent of $2,400 against a $1,878 PITIA gives 1.28. The commercial definition divides net operating income, rent after vacancy and operating expenses, by the annual principal and interest. The calculator switches between both methods.
- Do DSCR loans require tax returns or proof of income?
- No. That is their main appeal: a DSCR loan qualifies on the property's rent rather than your personal income, so there are no W-2s, pay stubs, or tax returns. Lenders still check credit, typically 620 to 680 at minimum, require cash reserves, and order an appraisal with a rent schedule to confirm market rent.
- What rent do DSCR lenders use?
- Usually the lower of the signed lease and the appraiser's market rent from the rent schedule (Fannie Mae Form 1007). On a vacant purchase, lenders use market rent alone. Some lenders accept short-term rental income from booking history or third-party revenue data, often with a haircut.
- Can I get a DSCR loan with a ratio below 1.0?
- Some lenders offer 'no-ratio' or sub-1.0 programs that go down to about 0.75, in exchange for a larger down payment, higher rate, and more reserves. They suit appreciation plays in expensive markets, but they mean the property costs you money every month, which the calculator's cash-flow figure makes plain.
DSCR Loan Calculator by state
Each state edition starts from that state's typical home price, rent, property tax, and insurance, with a worked example and notes on local rules.
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