The Quick Read: On a $400K duplex, a DSCR lender lends the smaller of two numbers: the loan allowed by the leverage cap on the lower of price or appraised value, and the loan the property’s combined rent can carry at the program’s minimum coverage. Most purchase files land at 75%–80% LTV, subject to lender guidelines.
- Leverage is the first test. Most purchase programs we place files with sit at 75%–80% LTV on an investment property.
- Rent is the second test. The duplex’s counted rent must cover the full monthly obligation (principal, interest, taxes, insurance, and any association dues) at the program’s minimum ratio.
- Whichever test is tighter sets the loan. A strong rent roll cannot lift leverage, and a high LTV cannot rescue weak rent.
- “Ephrata” is a hypothetical label here. Local taxes and insurance are property-specific, and they often move the answer more than borrowers expect.
How Does a DSCR Lender Size a Loan on a $400K Duplex?
A DSCR lender runs two tests on the same file and lends the lower result. The first test is value: a maximum LTV applied to the lesser of the contract price or the appraised value. The second is income: the largest loan whose full payment the underwritten rent can cover at the program’s minimum coverage.
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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.
Think of it as two ceilings over one loan. The value ceiling is easy to see. On a $400K purchase with a 75% LTV cap, the loan cannot pass 75% of the lower of price or appraisal. At an 80% cap, the ceiling is higher. The income ceiling is less visible, and it depends on what rent the lender will count and what the monthly obligation looks like. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
A DSCR loan qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Credit, equity, reserves, and the property itself are still reviewed. The borrower’s personal debt-to-income ratio is not the center of the file.
Lendmire’s complete DSCR loans guide covers the full program basics.
Key Terms Defined
DSCR (debt service coverage ratio): For 1–4 unit rentals, this is the property’s counted monthly rent divided by its monthly obligation.
PITIA: Principal, interest, taxes, insurance, and any association dues, which together form the monthly obligation the rent must cover.
LTV (loan-to-value): The loan amount as a percentage of the lower of purchase price or appraised value.
Rent used for lender review: The rent the lender counts, which is the lower of the signed lease or the appraiser’s market rent for each unit, added together.
Binding constraint: Whichever test, leverage or coverage, produces the smaller loan on a given file.
What Is the Leverage Ceiling on a Duplex Purchase?
Across our wholesale network, most purchase programs for investment properties land at 75%–80% LTV, which means 20%–25% down. Select higher-leverage programs exist for stronger-credit borrowers, with terms adjusted. Cash-out refinances top out around 75% LTV for standard long-term rentals. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.
Say the duplex is under contract at $400,000. At a 75% cap, the borrower funds the other 25% plus costs. At an 80% cap, it is 20%. The calculator on this site can turn those percentages into dollars as an illustrative estimate.
The cap applies to the lower of price and appraised value. If the appraisal comes in under the contract price, the LTV base drops and the loan shrinks with it. The borrower then covers the gap in cash.
Credit also moves leverage. A 620 floor exists in parts of the network. Most programs want about 660. A 700+ score tends to unlock the strongest leverage tiers. Those are typical ranges, not promises, and each file is underwritten individually.
How Does the Lender Count Rent on Two Units?
Rent is counted unit by unit. For each unit, the lender uses the lower of the signed lease or the market rent the appraiser reports, then adds the two figures. An above-market lease does not lift the ratio. A vacant unit is generally counted at market rent.
The appraisal form matters here. A duplex is a two- to four-unit property, so it calls for the Small Residential Income Property Appraisal Report, known as Form 1025. The Fannie Mae Selling Guide lists that form for two- to four-unit appraisals and a different form for a one-unit investment property. DSCR loans are not agency loans. Lenders simply use the familiar appraisal forms to document value and rent.
An appraiser’s write-up on Form 1025 appraisals notes that the form captures rent at the unit level instead of as one blended number. That matters when one unit is leased below market or sits vacant.
Typical documents are a signed lease per unit, proof of the deposit, and a rent roll. If the appraiser’s market rent is lower than the leases, the lower figure governs. That single fact is a common reason a borrower’s own math and the lender’s math differ.
What Rent Does the Duplex Need to Show?
The rent has to cover the full monthly obligation at the program’s minimum coverage. The ratio is counted rent divided by PITIA, and 1.00 is where select programs start. Stronger ratios open better terms and more leverage. Programs below 1.00 are available through select lenders in the network, with leverage and terms adjusted.
Here is the practical way to think about it. Taxes and insurance sit inside PITIA, so they change the answer even though they never appear in the rent. A duplex with strong rent but heavy carrying costs can show a thin ratio. A duplex with modest rent but light carrying costs can show a comfortable one. For an Ephrata duplex, the actual tax and insurance figures are the variables to get early, and a qualified local tax professional or insurance agent can confirm them for a specific property.
Two further points help.
- The ratio is a pass-or-fail check against the program, not a measure of profit. DSCR compares rent to PITIA only. Clearing 1.00 does not mean positive cash flow, because repairs, vacancy, management, utilities, and capex all sit outside the calculation.
- Structure can change the payment side. Extended terms (40-year) and interest-only periods are available through select lenders in the network. They lower the obligation the rent must cover, though they change the loan’s long-run cost. The 30-year fixed is the spine of the network.
Which Test Binds? Three Rent Cases on the Same Duplex
The leverage cap and the coverage test pull in different directions, so the same $400K duplex can produce different loans depending on rent. These are modeled ratios, not market data.
| Case | Counted-rent coverage | Which test binds | What it means for the borrower |
|---|---|---|---|
| Rent-short | About 0.9x | Coverage | Needs a smaller loan, a different structure, or a select sub-1.00 path |
| Rent-adequate | About 1.1x | Leverage | Loan sized by the LTV cap |
| Rent-strong | About 1.3x | Leverage | Same LTV cap, with more room for better terms |
In the rent-short case, the borrower often has three choices. Put more money down to shrink the loan, accept an adjusted structure from a lender that reviews sub-1.00 files, or reconsider the property. Sub-1.00 coverage is available through select lenders in the network, with leverage and terms adjusted. A borrower reaching for that path should ask whether the duplex is the right deal, or whether a different property would clear the standard test. Qualification is subject to lender guidelines, credit approval, and property review.
In the rent-adequate and rent-strong cases, leverage is the limit. Once coverage clears the program minimum, extra rent improves terms but does not raise the LTV cap.
Here is the most common misconception. Borrowers see strong rent and assume the loan will reach the highest LTV. It will not. Leverage caps, credit floors, reserve rules, and property eligibility all apply regardless of rent. A larger down payment lowers the payment and can lift the ratio, but it never removes those other rules. The strongest files clear both tests: enough equity and enough rental coverage.
What Else Changes the Number?
Appraisal. A low value cuts the LTV base. A low market rent cuts the coverage side. One low report can hit both tests at once.
Vacancy. If one unit is empty at purchase, the lender usually counts it at market rent. Some programs limit how much vacancy they accept, so confirm the property’s status with the broker before the contract is firm.
Rent regulation. Form 1025 asks whether the property is subject to rent control, as shown on the federally hosted copy of the form. Regulated rents can cap the market rent the appraiser can report.
Related-party tenants. A lease with a relative or friend gets closer review. The lender usually falls back to market rent.
Short-term rentals. Nightly-rate income is a different underwriting path with its own leverage caps and hosting-history expectations. 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.
Reserves. Expect about 6 months of PITIA in reserves on most files. 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, and loans above that size typically step up to about 9 months.
Loan size. A $400K duplex sits well inside the standard range, which runs up to $3,000,000. Above $2,500,000 the network generally holds to 30-year fixed structures. For larger buildings, Lendmire’s piece on how a super jumbo DSCR lender sizes a small apartment building shows where sizing changes.
Property type. Manufactured homes (single- and double-wide), log homes, and barndominiums are not offered in the network’s DSCR programs. A conventional frame or masonry duplex is the standard case.
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.
Who Does This Not Fit?
An owner-occupant who plans to live in one unit does not fit the DSCR path. These are loans for non-owner-occupied investment property. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage.
If the plan is to house-hack the duplex, a different program is the right starting point. If the plan shifts to renting both units later, a DSCR refinance becomes relevant at that point.
Larger-balance loans are where the underwriting logic starts to differ.
Practical Steps Before You Write the Offer
1. Get the tax bill and an insurance quote for the exact property. They are the two largest swing factors in PITIA, and a qualified local tax or insurance professional can confirm what applies to your situation. 2. Pull both leases and the rent roll. Compare each unit’s lease to realistic market rent, because the lower figure will count. 3. Decide how much equity you will put in. At 75%–80% LTV, you should expect to put down roughly 20%–25% plus costs, subject to lender guidelines. 4. Check your credit tier. A score near 660 or 700 changes which programs are on the table. 5. Plan reserves of about 6 months of PITIA, and confirm the rule for your loan size. 6. Ask for the property’s coverage ratio under two structures, the standard 30-year fixed and one extended or interest-only option, so you can see how much structure moves the number.
Tax treatment varies; consult a qualified professional.
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. Reach the team at 828-256-2183 or request a quote.
Frequently Asked Questions
Will a DSCR lender lend 80% on a $400K duplex?
Sometimes. Many purchase programs reach 80% LTV, but others stop at 75%. The cap applies to the lower of price or appraised value, and the rent must also clear the program’s minimum coverage. If either test falls short, the loan comes in smaller. These specifics are subject to lender guidelines and a full review of property, leverage, and credit.
Does the lender count the rent in my lease or the appraiser’s rent?
It counts the lower of the two for each unit, then adds the units. A lease above market does not raise the ratio. A vacant unit is generally counted at the appraiser’s market rent.
Can I use a DSCR loan if one unit will be my home?
No. DSCR loans are for non-owner-occupied investment property. If you plan to live in one unit, look at owner-occupant financing first. A DSCR loan can fit later, once the property becomes a full rental.
What if the rent does not cover the payment?
Options exist, though terms change. Select lenders in the network review coverage below 1.00 with leverage and terms adjusted. Other paths include more money down, a smaller loan, or an extended or interest-only structure. Each is subject to lender guidelines and property review.
Does clearing 1.00 mean the duplex will cash flow?
No. The ratio compares rent to PITIA only. Repairs, vacancy, management, utilities, and capex are outside it, so a property can pass the test and still produce thin cash flow after real operating costs.
About Lendmire
A non-QM mortgage broker (NMLS# 2371349), Lendmire arranges DSCR financing for real estate investors in 41 markets — 40 states plus Washington, D.C. Because deals are underwritten primarily on property cash flow rather than personal income documentation, the structure suits self-employed buyers and entity-owned portfolios. Lendmire places loans through wholesale investor lenders; it is not a direct lender. 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. New Jersey Real Estate Appraisal, Form 1025 Appraisal
3. Fannie Mae Form 1025 (federal copy, reginfo.gov)
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 Lender Will Lend on a Vacation Rental in an LLC? · Should You Choose DSCR Cash-Out Over an Agency Loan on a Duplex? · How a DSCR Lender Counts Rental Income From a Signed Lease
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
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.