The Quick Read: A lender divides the rent it counts on the property by the full monthly housing payment (principal, interest, taxes, insurance, and any HOA dues), and that single ratio decides whether the loan fits a program. Your personal paycheck is not the test. The property’s income is.
- The formula on a one-to-four-unit rental is counted rent divided by PITIA, with no operating expenses taken out first.
- Counted rent is typically the lower of the signed lease and the appraiser’s market rent.
- Many select programs start at 1.00. A separate select-lender path goes below 1.00, with leverage and terms adjusted.
- Clearing the ratio is a financing test, not proof of positive cash flow.
- Short-term rentals use a different income path, because the standard appraisal rent form was built for monthly leases.
What does DSCR coverage actually measure?
DSCR stands for debt service coverage ratio. It answers one question: does the property’s rent cover the property’s payment? At 1.00, rent equals the payment. Above 1.00, there is a cushion. Below 1.00, the rent falls short.
DSCR Calculator
Run the numbers in your market
Rate source: Freddie Mac 30-yr average via FRED® — Federal Reserve Bank of St. Louis · effective Oct 29, 2026
Prefilled with starting assumptions — enter your own rent or nightly figures, taxes, insurance, and HOA for a more accurate picture.
Program parameters update from Lendmire’s centralized guideline source. Taxes and insurance are editable estimates.
As of Oct 29, 2026 · General Freddie Mac market benchmark, not a Lendmire loan offer. Rent, nightly rate, occupancy, taxes, and insurance are editable estimates. Short-term rental figures are estimates only and vary significantly by season, property type, management approach, and local short-term-rental rules — confirm local regulations before relying on them. Qualifying income for short-term rentals varies by program — some use appraisal market rent, others use documented STR history or projections — and is confirmed in underwriting. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage. Credit, reserves, and leverage still matter.
You will often hear the broader strategy explained in Lendmire’s complete DSCR loans guide.
Key Terms Defined
PITIA: Principal, interest, taxes, insurance, and association dues. It is the full monthly housing payment, and it is the bottom half of the ratio.
Counted rent: The rent figure the lender actually uses. It may differ from what the tenant pays.
Market rent: The appraiser’s opinion of what the property would rent for in the open market.
LTV (loan-to-value): The loan balance as a percentage of the property’s value.
Reserves: Liquid savings the borrower must show after closing, usually counted in months of PITIA.
NOI (net operating income): Rent minus operating expenses. Commercial lenders use it. One-to-four-unit DSCR lenders generally do not.
What goes into the formula, line by line?
The top of the fraction is one number: counted monthly rent. The bottom is PITIA. Each piece comes from a different place.
| Payment line | Where the number comes from |
|---|---|
| Principal and interest | Loan amount and program structure |
| Property taxes | The tax bill, adjusted for any reassessment |
| Insurance | A real quote on the property |
| HOA dues | The association’s statement, if one exists |
The taxes and insurance lines surprise borrowers most. A seller’s listing may show an old tax figure that does not reflect what the bill becomes after a sale. Get a real insurance quote before you run the numbers. Rent can be perfectly fine while a heavy tax and insurance load drags the ratio down.
One caution on formulas. Two versions share the DSCR name. The commercial version divides NOI by annual debt service, so vacancy, management, and repairs come out first. The one-to-four-unit convention divides gross rent by PITIA. They are not interchangeable, and the commercial version shows a lower number on the same house.
How does underwriting treat a Nashville rental, step by step?
Here is the sequence a file follows across most programs in our wholesale network.
1. Pick the income figure. On a leased long-term rental, counted rent is typically the lower of the signed lease and the appraiser’s market rent. On a vacant or newly acquired property, market rent alone is used.
2. Order the appraisal. One report produces two numbers. Value drives LTV. Market rent drives coverage. A single-family property uses a rent schedule form called Form 1007. A two-to-four-unit property uses a small income property report called Form 1025.
3. Build the denominator. The lender totals principal, interest, taxes, insurance, and HOA dues.
4. Divide and compare. Counted rent over PITIA gives the ratio. The lender checks it against the program floor and its pricing tiers.
5. Check the rest of the file. Credit, leverage, reserves, and property eligibility get their own tests.
The documents involved are the lease, proof of rent payments, the appraisal, an insurance quote, tax figures, and HOA statements. Entity paperwork applies if the property is held in an LLC, subject to lender program eligibility.
Notice the order. The appraisal can resize your loan after you have made an offer, because the rent opinion sets the top of the fraction. Confirm the likely rent basis before you order it.
Same house, three outcomes
Run the numbers on one hypothetical Nashville-area rental that starts at a coverage ratio of about 1.20x. These are modeled assumptions, not market data.
| Scenario | What changes | Approx. coverage |
|---|---|---|
| Base case | Counted rent matches the quote | 1.20x |
| Costlier payment | Taxes and insurance push PITIA up about 10% | 1.09x |
| Lower rent opinion | Appraiser rent comes in about 15% under the lease | 1.02x |
| Both at once | Higher payment and lower rent | 0.93x |
The same house moves from comfortable to below 1.00 without any change in the tenant or the neighborhood. Each lever matters on its own. Together they can erase a cushion. This is why experienced investors stress-test the ratio before they write an offer.
Where does the rent number come from?
Usually from the lower of the lease and the appraiser’s market rent. The logic is simple. A lender does not want to rely on a lease rate the market would not support.
That produces two common edge cases. An above-market lease adds nothing, because the excess is typically ignored. A below-market lease pulls the ratio down, and renewing at market before the appraisal can help. Related-party leases, month-to-month tenants, and subsidized tenancies tend to draw closer review.
Market rent comes from the appraiser’s grid of comparable rentals. Form 1007 uses three rental comparables and a final monthly market rent estimate. It is a monthly-lease tool. That fact matters a great deal in the next section.
Where does the rule break on short-term rentals?
Short-term rentals break the standard method, because the standard rent form was not built for nightly income. Fannie Mae’s appraiser update says Form 1007 is for monthly market rent and is not meant to estimate nightly fees. It also says multiplying a nightly rate by 30 is not a valid way to get monthly rent.
So short-term rental files use another income path. Across our network, select programs look for roughly 12 months of hosting history and a credit score of 640 or higher. Purchase leverage on short-term rental collateral tops out at 75% LTV. Refinance runs around 70% LTV on short-term rental collateral, and cash-out is capped at 70% LTV on short-term rental collateral, compared with 75% on a standard long-term rental. Coverage is generally 1.00 on both purchases and refinances, and counted income is often trimmed, with the size varying by program.
Nashville shows why the permit matters as much as the ratio. Metro’s short-term rental page says a permit is required before listing. A seller’s booking history is not guaranteed to carry over to you, so a projection only counts if you can lawfully operate. More broadly, short-term rental rules can vary by city, county, HOA, and property type, so investors should confirm local rules before relying on projected rental income. Condo and HOA documents can add restrictions on top of local law.
DSCR vs. conventional financing
There are two common ways to finance an investment property, and they qualify you differently — here’s how investors weigh them.
Why investors choose it
- Qualifies on the property’s rental income — no personal tax returns, W-2s, or pay stubs needed to document income.
- No personal debt-to-income ceiling to clear, so existing mortgages and obligations don’t cap your borrowing the same way.
- Can be closed in an LLC, keeping the property inside a business entity.
- Built for scaling — not held to the limit on number of financed properties that conventional financing applies.
- Underwriting centers on the deal: generally qualifies when the rent covers the payment, a 1.00x coverage ratio being a common baseline (confirmed in underwriting).
- Designed specifically for investment property, including long-term and, where the program allows, short-term rentals.
Where it’s strong
- Often the lowest ongoing financing cost for a buyer who fully qualifies on personal income — a fit for a first property or a cost-first purchase.
Trade-offs for investors
- Requires full personal income documentation and must fit within a debt-to-income limit — salary, existing debts, and other mortgages all count.
- Typically held in your personal name rather than a business entity.
- Caps how many financed properties you can carry, which can become a ceiling as a portfolio grows.
- Evaluates you as a borrower as much as the property, which usually means more paperwork.
How investors usually choose: a first or single property often optimizes for the lowest financing cost; portfolio builders often optimize for leverage, vesting in an LLC, and scaling past conventional caps. The right answer depends on your goals, the property, and current guidelines — both paths run through select lenders in Lendmire’s wholesale network, with eligibility and terms confirmed in underwriting.
What other situations bend the rule?
A few structures change the math without changing the formula.
- Interest-only periods. A lower payment raises the ratio. Extended terms and interest-only periods are available through select lenders in the network.
- Coverage below 1.00. Many select programs start at 1.00. A separate path through select lenders takes coverage below 1.00, with leverage and terms adjusted.
- Ineligible property types. Manufactured homes (single- and double-wide), log homes, and barndominiums are not offered in these programs, no matter how strong the rent.
- Larger loans. Standard programs run up to $3,000,000. Above $2,500,000 the network generally holds to 30-year fixed structures.
What if your coverage falls short?
Work the levers in this order. Each has a cost.
1. Verify or reset the rent. If the lease sits below market, renewing at market before the appraisal can lift counted rent. Cost: you may lose a good tenant.
2. Put more down. A larger down payment lowers the payment and can lift the ratio. Cost: more cash tied up. It never erases leverage caps, credit floors, reserve rules, or property eligibility.
3. Change the structure. Interest-only or an extended term, where a select lender offers one, lowers the payment. Cost: slower principal paydown and possible pricing changes.
4. Shop the insurance and check the tax figure. Both sit in the denominator. Cost: time.
5. Pick a different property. Sometimes the honest fix is a house whose rent-to-price relationship fits the program.
Lendmire’s article How to Stabilize DSCR Coverage Before Closing on a Rental Loan covers the pre-closing side of these fixes in more depth.
Is clearing the ratio the same as making money?
No. The ratio compares rent to PITIA only. Repairs, vacancy, property management, utilities, and capital expenses all sit outside the calculation. A property can clear 1.00 and still lose money after a roof repair and two months of vacancy.
Run your own operating view next to the lender’s. Take the rent, subtract a realistic allowance for vacancy and upkeep, and see what is left after PITIA. If that number is thin, the loan may qualify and still be a poor investment. Tax treatment varies; consult a qualified professional.
How does coverage apply to purchases, refinances, and cash-out?
The formula is the same. The leverage and seasoning around it differ.
- Purchase of a standard rental: most files land at 75% to 80% LTV on an investment purchase, which means 20% to 25% down. Select high-leverage programs reach 85% LTV on an investment purchase with roughly a 700 score or better.
- Cash-out refinance on a standard rental: tops out around 75% LTV across most of the network. About 6 months of seasoning is the common expectation.
- Reserves: commonly around 6 months of PITIA, stepping up to about 9 months on loans above $1,500,000. Conservative rate-and-term files at modest leverage under $1,500,000 can see reserves waived.
Credit also shapes the picture. A 620 floor exists in parts of the network, most programs want around 660, and 700 or higher unlocks the strongest leverage tiers. All of this is subject to lender guidelines and varies by borrower and property.
A pre-offer coverage checklist
Before you make an offer on any rental, check these:
- The likely counted rent: lease or market, whichever is lower.
- A real insurance quote, not a guess.
- The tax figure after any reassessment, not the seller’s old bill.
- HOA dues, and whether the HOA restricts short-term use.
- Whether the property type is eligible at all.
- Your credit tier and the reserves you can show.
- A stress test: rent down about 15%, payment up about 10%. Does the ratio still work?
Frequently Asked Questions
What is the DSCR formula for a rental?
Counted monthly rent divided by the full monthly PITIA payment. On one-to-four-unit rentals, the convention is gross rent over PITIA, with no operating expenses subtracted first. That differs from the commercial NOI-based version.
What happens if coverage is below 1.00?
Many select programs start at 1.00. A separate path through select lenders in the network goes below 1.00, with leverage and terms adjusted. Expect lower leverage and different terms, and qualification stays subject to lender guidelines, credit, and property review.
Do taxes and insurance count in the ratio?
Yes. Both sit in PITIA, along with HOA dues where they apply. A high tax and insurance burden can lower coverage even when rent is strong, which is why borrowers should use real quotes rather than estimates.
Does my personal income matter?
The loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. Your credit profile, reserves, and leverage still matter, and entity documents apply if the property is held in an LLC, depending on program guidelines.
Can a short-term rental use the same rent method?
No. The standard appraisal rent form covers monthly leases, not nightly rates. Short-term rental files use hosting history or a projection, and the counted figure is often trimmed. Confirm local permit and HOA rules before relying on projected income.
Next step
If you are buying or refinancing a rental property and want to see how the numbers work, Lendmire, a DSCR-focused mortgage broker arranging investor loans across 41 markets, including Washington, D.C., can help you compare DSCR loan options based on the property income, credit profile, leverage, and investor goals. Programs are not a commitment to lend, and every file is underwritten individually.
About Lendmire
As a DSCR and non-QM mortgage broker, Lendmire — NMLS# 2371349 — connects investors with wholesale lending channels across 41 markets, including Washington, D.C. The property’s rental income, not the borrower’s tax returns, is central to lender review, which works for self-employed operators and portfolios beyond four financed properties. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
1. Fannie Mae Appraiser Update
2. Nashville.gov Short-Term Rentals
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How to Get a DSCR Loan on a Rental Needing Repairs · Can You Get a DSCR Loan on a Surfside Beach Rental? · Can You Get a No-Ratio DSCR Loan on a 2-4 Unit Rental?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
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Disclosures. The information presented in this article is general market commentary, not financial, legal, or tax advice. Lendmire is a mortgage brokerage (NMLS# 2371349) — not a direct lender or depository institution — and loan placement is subject to lender underwriting. Nothing in this content represents a commitment to lend. Loan terms, pricing, and program availability vary based on borrower qualifications, property characteristics, and state of subject property, and are subject to change at any time. Lendmire complies with Equal Housing Opportunity requirements. Consumer access: nmlsconsumeraccess.org.