The Quick Read: The loan amount is the smallest of three limits: the leverage cap, the payment the rent can carry at the program’s minimum coverage, and the program’s loan-size band. On most duplex purchases, the leverage cap or the rent test sets the number. The loan-size band rarely does. Qualification runs primarily on property-level rental income covering the payment, subject to lender guidelines.
- Purchase leverage on most files lands at 75%–80% LTV on an investment property. Select high-leverage programs reach 85% LTV with roughly a 700+ score.
- Coverage of 1.00 is where select programs start. Stronger ratios open better pricing and leverage.
- Both units’ rents are added together and tested against one payment (principal, interest, taxes, insurance, and any HOA dues).
- Credit generally runs from a 620 floor in parts of the network to about 660 on most programs. A 700+ score unlocks the strongest leverage tiers.
- Reserves commonly run about 6 months of PITIA. They vary by lender, leverage, and loan size.
Nothing here is a commitment to lend. Programs change, and every file is underwritten individually.
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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.
Key Terms Defined
DSCR (debt service coverage ratio): Monthly rent divided by the full monthly housing obligation on the property.
PITIA: Principal, interest, taxes, insurance, and any HOA dues, all on the same property.
LTV (loan-to-value): The loan amount divided by the lesser of price or appraised value.
Form 1025: The appraisal report for two- to four-unit properties. It carries the value opinion and the per-unit rent analysis in one document.
Market rent: The appraiser’s opinion of what each unit should rent for. It is not the same as what the current tenant pays.
Why a Duplex Is Sized Differently Than a Single-Family Rental
A duplex gives the lender two rent streams against one payment. That is the whole attraction. Two units can carry a larger loan than one unit at the same price, as long as the combined rent clears the program’s minimum coverage.
Appraisal mechanics differ too. A one-unit investment property typically uses a comparable rent schedule. A two- to four-unit property uses Fannie Mae’s Form 1025, the small residential income property report. DSCR files borrow the form name only. The program rules come from the lender, not from agency guidelines.
Here is the catch. One appraisal now drives two numbers: value (which sets the LTV limit) and rent (which sets the coverage limit). If the appraiser comes in light on either, the loan shrinks. That is why duplex files live or die on the appraisal.
How Does a Lender Actually Size the Loan?
Underwriting works through a fixed sequence. Each step can lower the number, and none can raise it past the tightest limit.
1. Pick the rent. The file carries signed leases and the appraiser’s per-unit market rent. Many programs use the lower of the two. Practice varies by program, so check the guidelines before assuming a lease above market will count.
2. Add the units. Each unit’s rent comes from the Form 1025 rent analysis. The two figures are summed into one numerator.
3. Build the denominator. This is PITIA on the whole property. Taxes and insurance are the swing items. A new insurance quote or a tax reassessment after the sale can move the ratio without the rent changing.
4. Divide rent by PITIA. The result is compared to the program’s minimum coverage. On select programs that starts at 1.00.
5. Solve backward. Divide rent by the minimum ratio to find the largest PITIA the rent supports. Subtract taxes, insurance, and HOA. What remains is the room for principal and interest, and that room converts to a maximum loan amount. Leverage, reserves, and pricing vary by lender and program; the final terms follow the full file review.
6. Compare with the leverage cap. The lower of the rent-supported loan and the LTV-based loan governs.
7. Apply the loan-size band. Standard programs run up to $3,000,000. Smaller balances route through select lenders in the network. Above $2,500,000, the network generally holds to 30-year fixed structures.
Run in the forward direction, the same math tells an investor whether a given loan passes. Run in reverse, it tells the investor how much the rent will carry. Most investors only run it forward. The reverse calculation is the more useful one before making an offer.
The Three Limits Side by Side
| Limit | What sets it | Typical range |
|---|---|---|
| Leverage cap | Price or appraised value | 75%–80% LTV on purchase |
| Rent-supported loan | Rent, PITIA, minimum ratio | 1.00 is a select-program start |
| Loan-size band | Program guidelines | Up to $3,000,000 standard |
In a high-rent, low-cost market, the leverage cap usually binds. The rent could carry more, but the LTV won’t allow it. Where rent is thin against price or insurance, the rent-supported loan binds. The investor then brings more cash to the table or looks at a select-lender path with adjusted leverage and terms.
Two duplexes at the same price can support very different loans. One may be capped by LTV. The other may be capped by rent. Price alone tells you nothing.
A Worked Duplex Scenario
Picture a duplex purchase at 75% LTV. The appraiser’s combined market rent covers PITIA at roughly 1.25x. Both limits pass. The leverage cap governs, and the loan is the full 75%. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
Now stress it. Insurance renews higher and the appraiser’s rent comes in below the leases. Coverage drops to about 1.05x. It still clears a 1.00 start, but the cushion is thin. Push insurance up once more and coverage falls under 1.00. At that point the 75% loan no longer passes on a 1.00-minimum program.
The investor has three paths. Put more down, which lowers the payment and lifts the ratio. Look at a select-lender path that accepts coverage below 1.00, with leverage and terms adjusted. Or ask about an interest-only period through a select lender, which tests the ratio on interest, taxes, insurance, and HOA only. Each path is reviewed subject to lender guidelines, credit approval, and property review.
A larger down payment helps coverage. It never erases the credit floor, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.
What Rent Does a Tallahassee Duplex File Actually Use?
The appraiser’s rent, not a listing site’s average. Rent aggregators publish city-wide averages across every unit type, and their figures disagree with each other. Apartment List’s Tallahassee rent report shows rents roughly flat year over year, but that is a market-wide average, not a per-unit duplex comparable.
For a duplex in this market, the useful evidence is comparable two-unit rentals near the subject, plus the signed leases. A student-oriented duplex near campus may rent on a different cycle than one in a family-oriented neighborhood. The appraiser reads those differences. A lender reads the appraiser.
Vacant units are usually supported by the market-rent figure from Form 1025. Pet fees, parking, storage, and utility reimbursements are generally left out of rent used for lender review.
Cost Inputs That Shrink the Loan
Taxes and insurance sit in the denominator. In Florida, insurance quotes are a common reason a duplex file slips. Coverage ratios built on a stale quote can fail when the real binder arrives. A fresh, complete insurance quote before the file goes in prevents that surprise. Property taxes can also reset after a sale, so the seller’s current bill is not a safe stand-in.
Both items vary by property and carrier. Budget for them from live quotes, not from last year’s numbers.
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.
Meeting the Ratio Is Not the Same as Making Money
DSCR compares rent to PITIA only. Clearing 1.00 does not mean the property produces positive cash flow. Repairs, vacancy, management, utilities, and capital expenses all sit outside the calculation.
A duplex at 1.10x can still lose money in a year with a long vacancy and a roof repair. A duplex at 1.40x is far more forgiving. Treat the ratio as the lender’s test, then run your own operating budget separately. Both numbers matter.
Qualifying Factors That Move the Number
| Factor | Typical network guidance |
|---|---|
| Credit | 620 floor in parts of the network; most want about 660 |
| Strongest tier | 700+ unlocks the highest leverage |
| Reserves | About 6 months PITIA; about 9 months above $1,500,000 |
| Cash-out refinance | Around 75% LTV; about 6 months seasoning common |
Reserves vary by lender, leverage, loan size, and transaction type. Conservative rate-and-term files at modest leverage under $1,500,000 can see reserves waived. Reserves documentation is where files stall, so have statements ready before the lender asks.
Entity vesting is common. An LLC can hold title, subject to lender program eligibility, and the file then needs the entity documents. Personal income documents such as tax returns and W-2s are not part of the qualification. Credit, reserves, insurance, and appraisal documents still are.
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. That treatment follows from the business-purpose exemption in Regulation Z, which is why personal debt-to-income is not part of the test.
Where the General Rule Breaks
Owner occupancy. Living in one unit changes the treatment of the loan and usually takes it out of a DSCR program. A purchase to live in one side is a different product conversation. A pure rental purchase is where DSCR fits. Lendmire’s piece on how a DSCR loan lends on a duplex based on rent covers the rent-driven side in more depth.
Commercial space. A duplex with a commercial unit falls outside the residential rent-schedule method. It may not fit a residential DSCR program at all.
Short-term rental duplexes. These use different income documentation. Purchase leverage tops out at 75% LTV, with a 640+ score and about 12 months of hosting history expected. The coverage floor is 1.00 on purchases and on refinances. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.
Coverage below 1.00. Programs below 1.00 are available through select lenders in the network, with leverage and terms adjusted. 1.00 is where many select programs start. The sub-1.00 path is a separate one, not a program whose floor simply moves.
Property types. Manufactured homes (single- and double-wide), log homes, and barndominiums are not offered through the network’s DSCR programs.
Appraisal gaps. If the appraiser’s rent or value comes in light, a reconsideration request with in-neighborhood comparables is a routine step. A well-documented packet recovers more than an argument does.
What the Decision Looks Like in Practice
Underwrite before you offer. Estimate rent from comparable duplexes, get a live insurance quote, and estimate taxes with reassessment in mind. Then work the ratio backward to see the loan the rent can carry. If rent is the binding limit, the down payment rises, and you want to know that before you are under contract.
Compare the result against the leverage cap. If LTV binds, extra rent will not buy more loan. If rent binds, a larger down payment or a stronger ratio on a different property may be the better move. Lendmire’s piece How Much a DSCR Loan Lends on a $400K Duplex walks through that kind of price-point comparison.
Across the network, lenders weigh the same file differently. One may accept a thinner ratio at lower leverage. Another may price the same file better with stronger credit. A broker placing the file sees those differences and routes accordingly. The complete DSCR loans guide covers the full program picture.
Frequently Asked Questions
Does the lease or the appraiser’s market rent set the coverage figure?
It depends on the program, but many use the lower of the two. A lease above market is generally capped at the appraiser’s figure. A lease below market may be used as written, or the market figure may be allowed. Confirm which applies before you count on the higher rent.
Is a DSCR of 1.00 the same as positive cash flow?
No. A 1.00 ratio means rent equals PITIA. Vacancy, repairs, management, utilities, and capital expenses are not in the calculation. Investors should budget those separately.
Can a larger down payment make up for thin rent?
Partly. More down lowers the payment, which can lift the ratio. It does not override leverage caps, credit floors, reserve rules, or property eligibility. The file still has to clear both the equity test and the coverage test.
What if one unit is vacant?
Market rent from the appraiser’s Form 1025 analysis generally supports a vacant unit.
Do I need tax returns or W-2s?
Not for qualification. The file runs primarily on property-level rental income covering the payment, subject to lender guidelines. You still supply credit authorization, reserves documentation, an insurance quote, and entity documents if buying in an LLC.
For current guidelines and terms, see Lendmire’s DSCR loan programs page.
About Lendmire
Lendmire (NMLS# 2371349) is a DSCR-focused mortgage broker arranging investor financing through select lenders in its wholesale network, across 41 markets, including Washington, D.C. If you are buying or refinancing a rental property and want to see how the numbers work, Lendmire can help you compare DSCR loan options based on the property income, credit profile, leverage, and investor goals. 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
2. apartmentlist.com: Tallahassee
3. CFPB, Regulation Z §1026.3, Exempt Transactions
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How Much a DSCR Loan Lends on a Business Acquisition · How Much an Interest-Only DSCR Loan Lends a Scaling W-2 Investor · How Much a 40-Year DSCR Loan Changes the Monthly Payment
Guides: DSCR Loans in Tallahassee, FL · DSCR Loans in Florida
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.