The Quick Read: A DSCR refinance on a duplex is capped by the lower of two tests: the leverage limit on the appraised value and the loan size the rent can carry. Neither test alone sets the number. The tighter one wins, and a Bucks County duplex can land on either side.
- Cash-out on a standard rental tops out around 75% LTV across most of the network.
- Rate-and-term refinances can reach higher leverage, with a ceiling of 85% on select programs.
- Rent is tested against the full payment on the new loan: principal, interest, taxes, insurance, and any dues.
- Both units count together, and the appraiser’s rent opinion usually limits what the lease can claim.
- Clearing the coverage test is not the same as positive cash flow.
Lendmire is a broker. It arranges these loans through select lenders in a wholesale network covering 41 markets, including Washington, D.C. Everything below is typical guidance, subject to lender guidelines, and not a commitment to lend.
DSCR Cash-Out Calculator
Run the cash-out 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 property’s value, balance, taxes, and insurance 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. Property value, balance, taxes, and insurance are editable estimates. Maximum loan-to-value varies by lender, program, property type, and seasoning. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
What Is a DSCR Refinance on a Duplex?
It is a business-purpose loan on a rental. It pays off the old mortgage and, if you want, returns cash. 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.
The loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. Credit and reserves still apply. Personal income documentation is generally not the center of the file.
A duplex counts as a 1-4 unit residential property. That matters for the coverage math. The test is gross rent over the full housing payment. Commercial buildings are measured differently, by net operating income over debt service. Don’t mix the two formulas.
For the broader program picture, Lendmire’s complete DSCR loans guide covers the basics.
Key Terms Defined
- DSCR (debt service coverage ratio): Rent used for lender review divided by the full monthly housing payment on the new loan.
- PITIA: Principal, interest, taxes, insurance, and any association dues, the payment the rent has to cover.
- LTV (loan-to-value): The new loan balance as a percentage of the appraised value.
- Rate-and-term refinance: A refinance that pays off the old loan and costs, with no meaningful cash back.
- Cash-out refinance: A refinance where the new loan exceeds the payoff and the difference goes to the borrower.
- Seasoning: The ownership period a lender wants before cash-out is available. About 6 months is the common expectation.
- Net proceeds: Cash left after the payoff and closing costs come off the new loan.
How Does a Lender Size the Loan? (The Lowest Limit Wins)
Two tests run side by side. The smaller result is your maximum loan.
| Test | What it measures | When it usually controls |
|---|---|---|
| Value test | LTV cap times appraised value | Strong rents, modest value |
| Rent test | Largest payment the rent can carry at the required ratio | High value, modest rents |
| Program band | Loan size and credit tier limits | Rarely binds on a duplex |
On the value test, cash-out tops out around 75% LTV on a standard rental. Rate-and-term refinances can go higher, up to 85% on select programs. Those figures are ceilings, not promises. Credit score, reserves, and the specific lender move them. Every figure here varies by lender and program: guidelines, property type, leverage, and credit profile all apply.
On the rent test, 1.00 is where select programs start. Stronger ratios open better pricing and leverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Those are different paths, not one program with a sliding floor.
Here’s the catch on the rent test. A bigger loan means a bigger payment. A bigger payment means a thinner ratio. So you can have plenty of equity and still not be able to borrow against all of it.
A larger value does not rescue weak rent. A strong rent does not rescue a low appraisal. The strongest files clear both tests.
Which Rent Counts on a Duplex?
Both units pool into one test. A duplex has two rent lines, and each is checked against its lease and the appraiser’s conclusion for that unit.
For a 2-4 unit property, the appraisal report is Fannie Mae’s Form 1025. The Fannie Mae Selling Guide describes it as the report for two- to four-unit properties. The same guide ties the single-family comparable rent schedule, Form 1007, to one-unit investment properties. Those forms are borrowed by habit. They do not make a DSCR loan an agency loan, and agency rules don’t govern these files. The forms list names both.
In practice, a few patterns show up on duplex files:
- Lease above market. The excess generally doesn’t count. The appraiser’s rent opinion caps the ratio.
- Lease below market. Without a supporting rent opinion, the ratio can drag.
- One unit vacant. Only the appraiser’s market rent is available for that unit.
- Month-to-month tenant. No lease term to lean on, so the market opinion carries more weight.
- Short-term rental in one half. Income is typically documented from operating history. 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.
One appraisal produces both the value that drives LTV and the per-unit rents that drive coverage. If the value comes in low, proceeds shrink twice: once through the LTV cap and again if you asked for a fixed amount.
Where Does a Bucks County Duplex Land? (Worked Walk-Through)
Bucks County is a suburban Philadelphia market with older duplex stock in the lower-county boroughs. Local taxes and insurance feed the payment side of the test, so they matter. This walk-through uses ratios and percentages only, since the calculator handles dollar conversion.
Picture an investor with a stabilized duplex, both units leased, a cash-out refinance requested at the 75% ceiling. The appraisal supports the value. Rent from both units pooled against the new payment clears a bit over 1.2x.
Run the sequence:
1. Value sets the leverage cap. At 75% LTV on a cash-out, that is the ceiling. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
2. The new loan creates a new PITIA. The old mortgage payment is irrelevant.
3. Pooled rent divided by that PITIA gives roughly 1.2x. That clears the 1.00 program floor.
4. The leverage cap is the lower result, so value binds. The investor can request up to the cap.
5. The payoff comes off first, then closing costs. What remains is net proceeds. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.
Now change one thing. Same duplex, but one unit is under-rented, and the local tax load is heavier. Pooled rent against the same payment drops toward the low-1.0 range. The value test still allows the 75% request, but the rent test pulls the supportable loan lower.
Rent now binds. Cash-out shrinks. Taking less cash raises the ratio, because a smaller loan carries a smaller payment.
For an investor in that spot, three paths usually come up. Take less cash out. Move to a rate-and-term refinance. Or raise the documented rent before applying, through a renewed lease at market. A sub-1.00 path through select lenders in the network also exists, with leverage and terms adjusted. Eligibility stays subject to lender guidelines, credit approval, and property review.
Honestly, it’s a toss-up which test binds on a given duplex until the appraisal lands. Two duplexes with identical rent can size very differently once taxes and insurance differ.
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.
Rate-and-Term vs. Cash-Out on a Duplex
| Factor | Rate-and-term | Cash-out |
|---|---|---|
| Typical leverage ceiling | Up to 85% on select programs | About 75% on standard rentals |
| Cash to borrower | Minimal | Difference after payoff and costs |
| Effect on coverage | Payment sized to payoff | Payment rises with each added dollar |
| Seasoning | Varies by lender | About 6 months is common |
The mechanical difference is simple. Every dollar of cash-out raises the payment and lowers coverage. A payoff-only refinance keeps the payment as small as the balance allows.
What Does the File Need?
Operator note: duplex files rarely stall on the ratio itself. They stall on gaps in the paperwork. Missing leases, a stale insurance declaration, and unclear entity documents cause most of the back-and-forth.
A typical file includes:
- Appraisal with rent schedule
- Leases or a rent roll for both units
- Payoff statement on the existing loan
- Landlord insurance declaration reflecting the right coverage
- Entity documents, if the property is vested in an LLC, subject to lender program eligibility
- ID, credit, and asset statements
- A business-purpose affidavit
Reserves vary by lender, leverage, loan size, and transaction type. About 6 months of PITIA is common, stepping up to about 9 months on loans above $1,500,000. Most duplexes sit well under that band.
Credit matters too. A 620 floor exists in parts of the network, most programs want around 660, and 700+ opens the strongest leverage tiers. Loan sizes run up to $3,000,000 on standard programs, with smaller balances routed through select lenders.
Most 1-4 unit DSCR loans are full recourse to the borrower or guarantors, even when the property sits in an LLC. Plan for that.
Common Mistakes on Duplex Refinances
- Assuming maximum leverage. The cap is a ceiling. Rent may set a lower number.
- Forgetting taxes and insurance. They sit in the denominator.
- Counting rent the appraiser won’t. An above-market lease doesn’t lift the ratio.
- Treating a passing ratio as profit. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities, and capex sit outside it.
- Mixing formulas. Commercial DSCR uses net operating income over debt service. Duplex files use gross rent over PITIA.
- Skipping the appraisal. Nearly every file needs a full appraisal and rent opinion.
A larger down payment on a purchase lowers the payment and can lift the ratio. It never erases leverage caps, credit floors, reserve rules, or property eligibility.
What If You Live in One Unit?
Then it isn’t a DSCR candidate. These loans require non-owner-occupancy and a business purpose. An owner-occupied duplex belongs on a different product, and Lendmire’s piece How Much a Refinance Lends on a 2-4 Unit Primary Home covers that route. Once you move out and the property is a true rental, DSCR becomes available.
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. Call 828-256-2183 or use the site’s illustrative calculator for a rough estimate.
Frequently Asked Questions
Does a county loan limit apply to a Bucks County duplex?
No. DSCR loans are non-agency, so no county-specific conforming limit sets the cap. Leverage, rent coverage, credit, and loan-size bands do. Standard programs run up to $3,000,000, subject to lender guidelines.
What if the rent doesn’t cover the larger payment?
Rent then binds, and the supportable loan shrinks. You can take less cash out, switch to a rate-and-term refinance, or document higher market rent. A select-lender path below 1.00 coverage exists, with leverage and terms adjusted.
Can I refinance a duplex out of a short-term loan?
Often, yes. A rate-and-term DSCR refinance can pay off a bridge or construction loan if the duplex is stabilized with leases or a supportable market rent. Seasoning and reserve rules vary by lender.
What’s the difference between gross and net cash?
Gross cash-out is the new loan minus the payoff. Net proceeds subtract closing costs and any prepayment penalty on the old loan. Compare offers on net cash, not loan size alone.
Does clearing 1.00 mean the duplex makes money?
No. The ratio compares rent to PITIA only. Vacancy, repairs, management, utilities, and capex are outside it, so a passing ratio is a lending test, not a profit test.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage built around DSCR investor lending, with programs available in 41 markets, including Washington, D.C. DSCR lenders commonly evaluate rental-income coverage instead of personal income paperwork, a practical fit for LLC-owned and multi-property investors. Terms vary by lender, property, leverage, and program. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
Get Started
Ready to find the right loan for you?
See your offer in seconds. No credit pull, no obligation.
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 Selling Guide B4-1.2-01
2. Fannie Mae Selling & Servicing Guide Forms
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 When a Fourplex Grows to Five Units · How to Lower Your Loan-to-Value on a Rental Before a DSCR Refinance · How Much a DSCR Cash-Out Refinance Lends on a Gatlinburg Cabin
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
Compliance and disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage broker and is not a direct lender, depository institution, financial advisor, or tax professional. Content in this article is general market analysis and educational information — not financial, legal, or tax advice for any specific situation. Lendmire does not guarantee loan approval; every transaction is subject to underwriting by the funding lender. Mortgage pricing and loan program guidelines are subject to change at any time without notice and vary by borrower characteristics, property type, and state regulations. Lendmire complies with Equal Housing Opportunity. Licensure verification: NMLS Consumer Access.