The Quick Read: Usually 20% to 25% down on a purchase, because interest-only changes the payment schedule and does not change the leverage cap that sets your equity. Most programs we place files with cap a 2-4 unit purchase at 75% to 80% loan-to-value, and select high-leverage programs reach 85% for stronger borrowers.
- Interest-only lowers the monthly payment and can lift your coverage ratio. It does not lower your down payment.
- Most purchases land at 75%-80% LTV, which means 20%-25% down, subject to lender guidelines.
- Select high-leverage programs reach 85% LTV (15% down), generally with a score around 700 or higher.
- No true zero-down DSCR option exists, and the source of your down payment gets reviewed.
- Closing costs and reserves come on top of the down payment, so budget for all three.
How Does LTV Turn Into Your Down Payment?
Your down payment is the purchase price minus the loan, and the loan is capped by the program’s loan-to-value ratio. LTV is the loan amount divided by the property’s value, and the lender uses the lower of price or appraised value. A 75% LTV means 25% down. An 80% LTV means 20% down. The exact numbers vary by lender and program and follow a full review of property, leverage, and credit.
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As of Oct 15, 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 stands for debt service coverage ratio. It compares the property’s monthly rent to its full monthly obligation. That obligation is PITIA: principal, interest, taxes, insurance, and association dues. A DSCR loan qualifies primarily on property-level rental income covering the payment, subject to lender guidelines, so your personal income plays a smaller role than on a standard mortgage.
That gives every file two separate tests. The equity test asks whether you are putting in enough cash for the leverage cap. The rent test asks whether the property’s income covers its payment. A bigger down payment helps the second test, but only the first test sets the minimum down payment.
Does Choosing Interest-Only Change the Down Payment?
No. Interest-only is a payment structure, and the leverage cap belongs to the loan program and the transaction type. If a program caps your duplex purchase at 80% LTV, it caps it there with a fully amortizing loan and with an interest-only one. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
Here is where the confusion comes from. Interest-only does change the rent test. During the interest-only period you pay no principal, so the monthly obligation drops and your coverage ratio rises. A fourplex that sits just under the line on a fully amortizing payment can clear it on interest-only.
It cannot clear the equity test any faster. You still bring the same percentage down, and you still pay closing costs and hold reserves. The structure solves a coverage problem, not a cash problem.
One more point on eligibility. Interest-only is available through select lenders in our wholesale network, and those lenders often want a stronger credit profile for it. A score around 680 or higher is a common expectation, versus a 620 floor that exists in parts of the network for standard structures. Most programs want around 660 on standard files, and 700 or higher unlocks the strongest leverage tiers. Exact terms vary by lender and file.
What Are the Down Payment Tiers on a 2-4 Unit Purchase?
Typical leverage tiers translate into down payments as shown below. These are guideline ranges from select wholesale-network programs, not commitments, and every file is underwritten individually.
| Scenario | Typical max LTV | Typical down payment |
|---|---|---|
| Standard 2-4 unit purchase | 75%-80% | 20%-25% |
| High-leverage select program | Up to 85% | About 15% |
| Short-term rental purchase | Up to 75% | 25% or more |
| Cash-out on a standard rental | Up to 75% | 25% equity stays in |
Many programs treat a duplex, triplex, and fourplex the same as a single-family purchase. Some tighten a notch at three and four units, which is why the range runs 20% to 25% rather than one number. Where you land inside that range depends on four things:
- Coverage ratio. Stronger coverage can open better leverage and terms.
- Credit score. The highest tiers want 700 or higher, and the 85% programs sit there.
- Loan size. Standard programs run up to $3,000,000, and above $2,500,000 the network generally holds to 30-year fixed structures, so interest-only is not the lever on very large balances.
- Borrower experience. First-time investors often face a higher score requirement.
Short-term rental collateral follows its own rules. Purchases go up to 75% LTV, and the borrower generally needs a 640 or higher score and about 12 months of hosting 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.
How Much Cash Do You Actually Need at Closing?
The down payment is only the first of three cash buckets. The other two are closing costs and reserves. Reserves are liquid funds the lender wants you to hold after closing, counted in months of PITIA.
Reserves vary by lender, leverage, loan size, and transaction type. Around 6 months of PITIA is common. Conservative rate-and-term files at modest leverage under $1,500,000 can see reserves waived. Loans above that size typically step up to about 9 months. Treat these as ranges, not promises.
Picture an investor buying a fourplex at 75% LTV. The equity test is simple: 25% of the price goes in as the down payment. Then comes the closing-cost line, and then a reserve requirement, which is a set number of months of the full monthly obligation sitting in verified accounts. Add the three and the cash requirement is noticeably higher than the down payment alone. Many first-time multi-unit buyers budget for the first number only and get surprised by the other two. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.
The calculator on this page can turn the percentages into dollars for your price, as an illustrative estimate rather than a quote.
Where Can the Down Payment Come From?
The lender reviews your source of funds, so plan the paper trail before you go under contract. Cash in your own accounts is the cleanest source. Gift funds can count in some programs when you also contribute your own money. Cash-out proceeds from another property you own can fund it too.
Two sources generally do not work. An unsecured personal loan cannot fund your down payment, and a seller-carried second lien cannot either. Both would mean the equity you show on paper is borrowed, which defeats the purpose of the leverage cap. Lendmire’s piece on no-down-payment DSCR options covers this in more detail. Nothing in the DSCR world works like the low-down-payment owner-occupant programs, because these are investor loans.
How Does Interest-Only Change the Coverage Math?
It removes principal from the payment, so rent divides into a smaller number. Run the comparison in ratio terms. Say a fourplex covers its full obligation at roughly 1.05x on a fully amortizing 30-year payment. On an interest-only payment, the same rent against the same property might cover at around 1.2x or better. The rent did not change. The denominator did.
Two cautions keep this honest.
First, ask the lender which payment each test uses. Some programs qualify coverage on the interest-only payment but size reserves on the fully amortized payment. The answer changes how much cash you hold, so get it in writing before you write an offer.
Second, clearing 1.00 does not mean the property cash flows. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities, and capital expenses all sit outside the calculation. An interest-only structure can make a thin deal look comfortable on the coverage line while the real monthly margin stays small.
For 2-4 unit buildings, all unit rents combine into the qualifying figure. The appraiser documents them on Form 1025, the small residential income property appraisal report used for two- to four-unit properties. That is only the form name. DSCR loans are not agency loans, and the program terms here come from the network’s guidelines, not from agency rules. Multi-unit buildings often cover better than single-family because several leases stand behind one payment.
On the coverage floor, 1.00 is where many select programs start, and stronger ratios open better pricing and leverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. No-ratio structures exist too, but only through select lenders and generally for borrowers who already own a primary residence.
What Happens When the Interest-Only Period Ends?
The payment steps up. The interest-only period is a set stretch of years, commonly 5 or 10, after which the loan amortizes over the remaining term. You have paid down no principal in the meantime, so the balance is the same as day one, and it now repays over a shorter runway.
That step-up is the real cost of the structure. If you bought on thin coverage and counted on the interest-only payment to carry the deal, the later payment can push coverage under 1.00 for a refinance. Plan for one of three exits before the period ends:
- Raise rents enough to cover the amortizing payment.
- Refinance into a new loan while coverage still qualifies.
- Sell, if the equity gain from appreciation or improvements justifies it.
Do not assume appreciation will bail you out. Interest-only builds equity only through value growth, not paydown.
What If Coverage Falls Short?
Move the levers in this order: down payment, structure, then property.
1. Put more down. A larger down payment shrinks the loan, which shrinks the payment, which lifts coverage. It does not erase credit floors, reserve rules, or property eligibility.
2. Use interest-only. If the lender offers it, it is often the biggest single lift to the ratio.
3. Consider a longer amortization. Extended terms, including 40-year, are available through select lenders in the network.
4. Look at sub-1.00 programs. These are available through select lenders in the network, with leverage and terms adjusted, so expect a larger down payment and tighter terms.
5. Change the unit mix or price. A different building, or a lower purchase price, can fix the math at the source.
The strongest files clear both tests: enough equity and enough rental coverage. If you only fix one, the other will stop the deal.
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 About Refinance and Cash-Out Later?
On a refinance there is no purchase down payment. The equivalent is the equity you leave in the property after the new loan. On a cash-out refinance of a standard rental, most programs in the network top out around 75% LTV, so about 25% equity stays in. Short-term rental collateral is lower, at 70% on a cash-out.
Seasoning is the waiting period between buying a property and refinancing it, and about 6 months is the common expectation on cash-out. Investors who buy, season, refinance, and reuse the equity can recycle the same down payment into the next building. Loan sizes and reserve rules still apply on the way out, and an interest-only loan you are about to refinance deserves a coverage check at the amortizing payment, not just the interest-only one.
Key Terms Defined
Interest-only period: the early stretch of the loan where your payment covers interest and none of the principal balance.
Amortization: the schedule that repays principal and interest together over the remaining loan term.
Reserves: liquid funds you hold after closing, usually counted in months of the full payment.
Seasoning: the time you own a property before a lender will refinance against its value.
Cash-out refinance: a new, larger loan on a property you already own, with the difference paid to you.
Is Interest-Only Right for Your 2-4 Unit Deal?
It fits when the property has real upside you plan to capture inside the interest-only window, such as rent increases from renovation, or when you plan to refinance. It also fits when you want the coverage ratio to clear on a building that is priced fairly but pays modest rent.
It fits poorly when you plan to hold long-term with no rent growth. In that case you are paying a larger bill later for a smaller bill now. Honestly, it is a genuine toss-up on stabilized buildings, and the answer depends on your exit.
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, and the Federal Reserve’s compliance handbook treats credit to acquire non-owner-occupied rental property as business-purpose credit. Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.
For the full picture of how these programs fit together, see the complete DSCR loans guide. If you want the credit and documentation side of interest-only on small multifamily, Lendmire’s article How to Qualify for an Interest-Only DSCR Loan on 2-4 Unit Properties picks up where this one stops.
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, through select lenders in its wholesale network across 41 markets, including Washington, D.C. Call 828-256-2183 or request a quote.
Frequently Asked Questions
Can I buy a duplex with less than 20% down on an interest-only DSCR loan?
Sometimes, through select high-leverage programs that reach 85% LTV, which means about 15% down. Those programs generally want a score around 700 or higher, and they tighten other terms. Most files land at 20% to 25% down, and interest-only does not move that number.
Does a fourplex need more down than a duplex?
On some programs, yes. Many treat all 2-4 unit purchases alike at 75% to 80% LTV, while others tighten leverage a notch on three and four units. Because of that spread, compare programs on your exact unit count rather than assuming a single number. Leverage, reserves, and pricing vary by lender and program; the final terms follow the full file review.
Is there a zero-down DSCR loan?
No true zero-down DSCR option exists. Every program requires equity, and the lender reviews where it came from. Gift funds can count in some programs with your own contribution, and proceeds from a cash-out on another property can fund the purchase.
Do I need to put more down if my DSCR is below 1.00?
Usually yes. Select lenders in the network take coverage below 1.00, with leverage and terms adjusted, which typically means a bigger down payment and a stricter credit profile. Coverage at or above 1.00 opens more programs.
Do reserves count toward my down payment?
No. Reserves are separate funds held after closing, commonly around 6 months of PITIA and about 9 months on loans above $1,500,000. Conservative rate-and-term files at modest leverage can see them waived. Budget the down payment, closing costs, and reserves as three separate lines.
About Lendmire
Lendmire is a DSCR-focused mortgage brokerage, NMLS# 2371349, placing investor loans across 41 markets, including Washington, D.C. DSCR eligibility is generally reviewed by the lender around a property’s rental income rather than personal income documentation, which fits LLC-held rentals, self-employed investors, and portfolios scaling past conventional financed-property limits. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. Fannie Mae Selling Guide B4-1.2-01
2. Federal Reserve Consumer Compliance Handbook, Regulation Z
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How High a DSCR Ratio Does a 40-Year Super Jumbo DSCR Loan Need? · How to Document a Jumbo DSCR Loan · How Much an IO ARM Payment Shifts vs. a Fixed DSCR Loan
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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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.