The Quick Read: A DSCR lender reads each of the four units separately, and for a month-to-month tenant it leans on the appraiser’s market rent instead of the rent you collect, either by using the lower of the two figures or by using market rent outright, depending on the program. A month-to-month tenancy rarely disqualifies a fourplex. It mainly changes which rent counts and how much cushion the ratio has. The four counted rents are added up and divided by the full monthly housing payment, and that debt service coverage ratio (DSCR) is tested against the program minimum, subject to lender guidelines.
- Market rent from the appraisal is the anchor number. Your leases and deposit history support it.
- Rent above market is generally not credited. Rent below market can pull the counted total down.
- Treatment varies by program, so ask each lender how it handles tenancies without a fixed term.
- A fixed-term renewal at market rent can simplify the file, but only if the appraiser’s opinion supports that rent.
- Clearing 1.00 is not the same as positive cash flow.
Key Terms Defined
DSCR (debt service coverage ratio): The property’s counted monthly rent divided by its full monthly housing payment. A result above 1.00 means the rent covers the payment.
PITIA: Principal, interest, taxes, insurance, and any association dues. It is the payment the rent is measured against.
Month-to-month tenancy: A rental with no fixed end date. Either side can end it with proper notice, so it is weaker evidence of future income than a signed fixed-term lease.
Market rent: The rent the appraiser concludes a unit would command, based on comparable rentals. It is an opinion of value, not what the tenant happens to pay.
Rent roll: A unit-by-unit list of tenants, rents, lease start dates, and lease end dates. On a fourplex it has four rows.
Rent schedule: The per-unit table in the multi-unit appraisal. It shows lease dates, actual rent, and the appraiser’s market rent side by side.
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 15, 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 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.
Why a Fourplex Sits in the Residential Lane
A fourplex is treated as a residential investment property, so the file is built around the property’s rental income rather than your personal income. 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.
Two to four units generally stay in residential underwriting, where gross monthly rent is divided by PITIA. Five or more units generally move to commercial underwriting, which uses a different calculation. That split is why four units is a comfortable size for these programs.
One more boundary matters here. A DSCR loan assumes no owner occupancy. If you plan to live in one of the four units, the file becomes an owner-occupied transaction and belongs in a different program.
How Does the Lender Pick the Rent Number, Unit by Unit?
The lender builds the number from the bottom up. It sets a counted rent for each of the four units, adds them, and divides the total by PITIA. The counted rent for any unit is anchored to the appraiser’s market rent, and the lease or tenancy evidence decides how far the file can rely on it.
The appraisal does the heavy lifting. On a two-to-four-unit property, the appraiser completes the Fannie Mae Form 1025 / Freddie Mac Form 72, the Small Residential Income Property Appraisal Report. Its rent schedule has a row for every unit. Each row carries lease begin and end dates, actual rent, and the appraiser’s opinion of market rent, plus a comment field for the lease details. The form directs the appraiser to reconcile the comparable rents into one market-rent opinion per unit.
A month-to-month unit shows an open-ended or blank end date on that schedule. That is the line an underwriter reads first. It tells the lender the tenancy has no term to rely on, so the market-rent opinion carries more weight.
Here is how the counted rent usually works unit by unit.
| Situation | Actual vs. market | Typically counted |
|---|---|---|
| Fixed-term lease, at market | Equal | Lease rent |
| Fixed-term lease, above market | Higher | Market rent |
| Fixed-term lease, below market | Lower | Lease rent (lower of the two) |
| Month-to-month, above market | Higher | Market rent |
| Month-to-month, below market | Lower | Varies: lower of the two, or market |
| Vacant unit | None | Market rent on many programs |
The lower-of rule has a simple rationale. A lender will not give you credit for rent the market does not support, and it will not assume a tenant paying less will suddenly pay more.
The below-market month-to-month row is where programs split. Some use the lower of the written agreement and market rent, which is the same convention as a fixed-term lease. Others fall back to market rent because the file has less to stand on. Across the programs we place files with, both approaches exist, so no single answer holds everywhere.
Agency lending shows the same instinct in a stricter form. The Freddie Mac Seller/Servicer Guide requires existing leases to be current and fully executed, and it has the lender check that market rents reasonably support the lease income. That is an agency rule, not a DSCR rule. It is useful only as proof that testing a lease against market rent is a common idea.
What Month-to-Month Changes and What It Doesn’t
A month-to-month tenancy changes the evidence, not the eligibility. It generally does not disqualify a fourplex. It means the lender trusts the appraiser’s number more and your lease paperwork less, and some lenders add an extra cushion for the missing term.
The practical effect shows up in four places: the rent counted, the thickness of the paperwork, the cushion in the ratio, and sometimes the leverage or pricing a program will offer. Here is how each tenancy state is usually read.
| Tenancy state | Lender leans on | You provide | Common fix |
|---|---|---|---|
| Fixed term, current | Lease and market rent | Signed lease | None needed |
| Month-to-month, written | Market rent, lease as support | Agreement, deposits | Renewal at market |
| Month-to-month, oral | Market rent, deposits | Deposits, rent roll | Put it in writing |
| Expired, rolled over | Market rent often | Old lease, deposits | New fixed-term lease |
| Vacant | Appraiser’s market rent | Rent-ready proof | Lease it before applying |
A written month-to-month agreement is better than an oral one. It names the tenant, the unit, the rent, and the start date, which gives the underwriter something to match against deposits. An oral arrangement can still work, but the file then rests almost entirely on the appraisal and the bank records.
Notice what is not in the table. Nothing there makes the property ineligible. A weaker file is not a denied file.
One Fourplex, Three Scenarios (and Two More)
Run the numbers on a fourplex with four equal units. These are modeled assumptions, not market data. Assume that when all four units are counted at full market rent, the property covers its payment at 1.25x. Then change the tenancy mix.
| Scenario (modeled) | Counted vs. full market | Coverage |
|---|---|---|
| A: All four fixed-term, at market | 100% | 1.25x |
| B: One month-to-month, 15% above market | 100% (excess not credited) | 1.25x |
| C: One month-to-month, 20% below market | 95% | about 1.19x |
| D: Two month-to-month, 20% below market | 90% | about 1.13x |
| E: All four month-to-month, 20% below market | 80% | 1.00x |
Scenarios C through E assume the lower-of convention. Under a program that falls back to market rent for month-to-month units, those three rows return to 1.25x, because the below-market rent is ignored. That is why the choice of program can matter more than the tenancy itself.
A tenant who pays above market adds nothing. The lender counts the appraiser’s figure.
A building that looks strong at full market rent can sit right at 1.00x when every tenant is month-to-month and underpaying. Most programs we place with look for 1.00 or better, and stronger ratios open better pricing and leverage. A separate path through select lenders in the network takes coverage below 1.00 with leverage and terms adjusted. Eligibility in either case depends on lender guidelines, credit, and property review.
A vacant unit is a sixth state. On many programs it counts at the appraiser’s market rent, but programs often limit how many vacant units they accept and may want the unit rent-ready. Some add a haircut on vacant space. Ask before you assume a vacant unit counts in full.
The Legacy-Tenant Problem
One long-term tenant paying well under market can drag down a whole fourplex. The tenant is reliable, the rent is documented, and the lower-of rule still counts the low number. On a four-unit building, one unit is a quarter of the income, so the effect is large.
You have a few options, and each has limits.
- Renew at market before applying. A fixed-term renewal at market rent can simplify the file. It only helps if the appraiser’s opinion supports that rent.
- Do not push above market. A fresh lease with a rent above the appraiser’s opinion is capped at market. It also risks losing a good tenant.
- Respect the tenant’s side. A renewal needs the tenant’s agreement, and local rent rules may limit what you can ask.
- Mind the timing. A new lease signed before the appraisal gives the appraiser a current data point. A lease signed in the middle of the process can confuse the paper trail.
Lendmire’s piece How a DSCR Lender Reads New Leases on Hard Money Rehabs covers the same principle when the leases are brand new. A lease only helps if the rent holds up against comparable rentals.
If one unit stays below market, the more honest path is to size the loan on the lower counted rent and keep the cushion. A conservative ratio beats a file that falls apart in review.
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.
Building the Rent Roll and Document Package
A clean document package is one of the lowest-cost improvements you can make to a month-to-month fourplex. Assemble it before you apply, not after the underwriter asks.
1. A unit-by-unit rent roll. List each unit, tenant, monthly rent, start date, and end date. Mark month-to-month units as month-to-month. Flag any unit with a lease ending soon.
2. Written agreements. Include the lease or tenancy agreement for each occupied unit. For oral tenancies, a short written memo of terms is better than nothing.
3. Twelve months of deposit history. Underwriters compare deposits to the rent roll. When the paper and the bank records disagree, the income can be cut no matter what the lease says.
4. An explanation for any gaps. A missed month, a partial payment, or a late rent should be explained in a short note.
5. traditional personal-income documentation, where requested. Some lenders look at the rental schedule on a return as a cross-check. 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.
Reconcile every row of the rent roll to a deposit. A rent roll that does not match the deposits is a preventable problem, and it is one of the most common reasons a clean file turns into a long one.
DSCR also does not mean no paperwork. The loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. Credit, assets, entity papers, insurance, the appraisal, and rent evidence are still part of the file.
Staggered expirations are a separate pattern. If three leases end in the same quarter, the lender’s reserve view can shift. Lendmire’s piece How a DSCR Lender Sizes Vacancy Reserves for Staggered Leases covers that angle.
Purchase vs. Refinance
The same building reads differently depending on the transaction. On a purchase, the seller’s tenants are new to you, and you have no payment history under your ownership. The lender leans harder on the appraiser’s market rent and treats the seller’s leases as supporting documents. On a refinance, you can show twelve months of deposits to your own account, which makes the month-to-month rent easier to verify.
Leverage differs too. On an investment property purchase, most files land at 75% to 80% LTV, with select high-leverage programs reaching 85% at roughly a 700 score. On a cash-out refinance, the ceiling is about 75% LTV, and about six months of seasoning is the usual expectation. Those are typical ranges, not promises.
A larger down payment lowers the payment and can lift the ratio. It does not erase leverage caps, credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.
Where Lender Policies Differ
Every part of month-to-month treatment is a program choice, not a rule. The market-rent anchor is consistent. Everything after it varies. Ask each lender these questions up front:
- Is a month-to-month unit counted at the lower of the agreement and market rent, or at market rent?
- Does the program apply an extra cushion for a missing lease term?
- How many month-to-month or vacant units can the file carry?
- Will a fixed-term renewal at market rent change the treatment?
- What deposit history and documents does the program want?
On most files, credit sits around 660, a 620 floor exists in parts of the network, and 700 or higher opens the strongest leverage tiers. Reserves are commonly about six months of PITIA, stepping up to about nine months on loans above $1,500,000. Standard loan sizes run up to $3,000,000. Our complete DSCR loans guide walks through those parameters in one place.
Keep one point separate from all of this. DSCR compares rent to PITIA only. A ratio above 1.00 does not mean the property produces positive cash flow, because repairs, vacancy, management, utilities, and capital expenses sit outside the calculation.
Frequently Asked Questions
Can I get a DSCR loan if all four tenants are month-to-month?
Often yes, subject to lender guidelines. The lender leans on the appraiser’s market rent for each unit, so the ratio depends on that figure rather than on your tenancy paperwork. Expect more scrutiny of deposits and less cushion in the ratio. Programs differ on how many month-to-month units they accept.
Do I need to sign new leases before I apply?
Not necessarily. A fixed-term renewal at market rent can simplify the file, but it is not required on every program. It only helps when the rent matches the appraiser’s opinion. Signing a lease above market gains nothing, because the excess is not credited.
What if a month-to-month tenant pays above market?
The lender counts the market rent, not the higher figure. The same cap applies to fixed-term leases. Treat the extra rent as income you collect, not income that drives lender review.
What if a month-to-month tenant pays below market?
It depends on the program. Some use the lower of the agreement rent and market rent, so the low rent counts. Others fall back to market rent. Ask the lender which approach applies before you price the deal.
Does passing 1.00 mean the fourplex cash flows?
No. The ratio compares rent to PITIA only. Repairs, vacancy, management, utilities, and capital expenses are outside it, so a building can clear 1.00 and still run thin after real operating costs.
Next Steps
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. Lendmire is a mortgage broker that arranges financing through select lenders in its wholesale network across 41 markets, including Washington, D.C. Program terms change, every file is underwritten individually, and nothing here is a commitment to lend.
About Lendmire
A DSCR-focused mortgage broker, Lendmire (NMLS# 2371349) places investor financing across 41 markets — 40 states plus Washington, D.C. — with DSCR eligibility generally reviewed by the lender on property cash flow instead of tax returns, subject to lender guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in 2025 and 2026.
Get Started
Ready to find the right loan for you?
In about 30 seconds you can review financing options available for your investment property. No commitment required.
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 Form 1025 / Freddie Mac Form 72
2. Freddie Mac Seller/Servicer Guide, Section 5306.1
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How a DSCR Lender Judges Management for an Out-of-State Owner · How to Get a DSCR Lender to Use Your Lease Rent · How to Show Offseason Mid-Term Income to a DSCR Lender
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
Required disclosures. Lendmire (NMLS# 2371349) operates as a licensed mortgage broker, not a direct lender or depository. The discussion in this article is general in nature and should not be relied upon as financial, legal, or tax advice — every investment scenario is unique and should be reviewed by a qualified professional. Any loan inquiry is subject to lender underwriting, and this article is not a commitment to lend or a guarantee of approval. Mortgage rates, loan terms, and program guidelines vary by borrower, property, and state, and may change without notice. Equal Housing Opportunity. Verify licensure at NMLS Consumer Access.