The Quick Read: A second borrower does not increase the loan on a rental cash-out, because the loan is capped by the lower of two property-based limits: a percentage of the appraised value, and the largest payment the property’s rent can cover at the required coverage ratio. The second person changes the credit tier, the liability, and the signing and title paperwork. Those changes can move the leverage cap, but a paycheck never enters the calculation.
- The cash-out ceiling is about 75% of value on a standard rental, and about 70% on short-term-rental collateral.
- The rent limit and the value limit both apply, and the smaller one wins.
- The lowest middle credit score among the people on the file generally sets the tier.
- A weak co-borrower can cost you leverage, and a strong one cannot rescue thin rent.
What Is a Rental Cash-Out Refinance, and Where Does a Co-Borrower Fit?
A cash-out refinance replaces your current loan with a larger one and hands you the difference. On a rental, that difference is borrowed against the property’s equity. A co-borrower is a second person who signs the loan with you and shares responsibility for repaying it.
DSCR Cash-Out Calculator
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Rate source: Freddie Mac 30-yr average via FRED® — Federal Reserve Bank of St. Louis · effective Nov 5, 2026
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As of Nov 5, 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.
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 property carries the qualifying weight. Your personal income is not the test. Lenders still pull credit, so people matter, but they matter for score and liability rather than for wages.
DSCR stands for debt service coverage ratio. You get it by dividing the monthly rent by the full monthly obligation, meaning principal, interest, taxes, insurance, and any HOA dues. That obligation is called PITIA. The Motley Fool’s explainer lays out the same formula and cautions that the ratio should not be the only basis for a decision. Lendmire’s complete DSCR loans guide covers the full program picture if you are new to the product.
How Does Underwriting Actually Size the Loan?
The lender sizes the loan twice and keeps the smaller answer. One calculation looks at value. The other looks at rent. Neither one asks who else is on the note.
Step 1: Decide who signs. Personal-name co-borrowers each sign the note and usually go on title. If an LLC is the borrower, the entity signs the note and holds title, while an individual signs a separate personal guaranty. LLC borrowers are accepted subject to lender program eligibility.
Step 2: Each person authorizes a credit pull. DSCR is not a no-credit-check product. Every borrower or guarantor provides ID and consent.
Step 3: Find the qualifying score. Across the wholesale network Lendmire works with, each person’s three bureau scores are reduced to a middle score. The file is then placed on the lowest of those middle scores. Scores are not averaged.
Step 4: Appraise value and market rent. The appraiser establishes the value and the rent the lender will use for review.
- Value limit: the leverage cap multiplied by the appraised value. On most files that cap is about 75% on a standard rental cash-out.
- Rent limit: the rent used for review divided by the required coverage ratio gives the largest monthly obligation the property can carry. That obligation translates into a maximum loan size.
Adventures in CRE’s glossary entry notes that lenders may cut the loan amount when coverage falls below their threshold. That is the rent limit at work. A bigger cash-out loan means a bigger payment, so coverage drops as cash comes out.
Step 5: Work out your cash. Cash to you equals the new loan, minus the payoff of existing liens, minus closing costs, minus any prepayment penalty on the old loan.
Step 6: Gather documents. Expect the lease or rent schedule, a valuation, entity papers if an LLC is involved, and credit authorization from each signer.
What Does the Math Look Like With and Without a Co-Borrower?
Run the numbers on a rental whose existing loan equals 50% of the appraised value. These percentages are modeled assumptions, not market data, and no payments are shown.
Solo borrower, strong rent. The cap is 75% of value, and the rent comfortably supports a loan that size. The gross cash-out is 75% minus 50%, or 25% of value, before costs.
Same file, add a co-borrower. Nothing changes. The value limit is the same, the rent limit is the same, and the cash-out is still 25% of value before costs. The second signature did not buy more leverage.
Same property, thinner rent. Say the rent only supports a loan equal to 60% of value at the required coverage ratio. The rent limit now beats the value limit, so gross cash-out shrinks to 10% of value before costs. A co-borrower with a large salary changes none of it.
Where the second person does matter. Suppose the solo borrower sits in a strong credit tier, and the added person scores lower. The lowest middle score now governs. The file may drop to a tier with a lower leverage cap, and the cash-out shrinks even though the rent is strong.
| Factor | Does a co-borrower change it? |
|---|---|
| Appraised value | No |
| Rent used for review | No |
| Coverage calculation | No, wages are not counted |
| Qualifying credit tier | Yes, the lowest middle score governs |
| Who is liable for the debt | Yes, each signer can be pursued |
| Title and signing | Yes, more signatures required |
Which Limit Usually Binds?
The answer depends on how much equity you hold and how strong the rent is. Two limits can cap the loan: the 75% cash-out LTV ceiling applied to the appraised value, and the rent limit, which comes from the DSCR (debt service coverage ratio) of qualifying rent against PITIA. With heavy equity and modest rent, the rent limit is the one more likely to bind. With thin equity and strong rent, the 75% LTV ceiling is more likely to bind. Whichever is lower sets the loan.
Coverage also needs context. DSCR compares rent to PITIA only. Clearing the minimum is not the same as positive cash flow, because repairs, vacancy, management, utilities, and capital expenses sit outside the ratio. Treat the number as a lender test, not a profit forecast.
On coverage floors, 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Stronger ratios generally open better pricing and leverage, which is the real reason to improve rent or shrink the loan.
What Credit and Reserve Rules Apply With Two People?
Credit sets leverage tiers, and the weaker signer sets the tier. A 620 floor exists in parts of the network, and most programs want around 660. A score of 700 or higher unlocks the strongest leverage tiers. These are typical ranges, subject to lender guidelines.
If a strong partner has a 740 and a weaker one has a 640, the 640 places the file. Before adding anyone, compare how the file prices and sizes with and without that person. Sometimes the stronger borrower alone gets the better outcome.
Reserves are the cash you keep after closing. They vary by lender, leverage, loan size, and transaction type. They commonly run around 6 months of PITIA on the subject property. Loans above $1,500,000 typically step up to about 9 months. Cash-out proceeds generally cannot be used to satisfy reserves.
The person whose name is on the accounts matters. If a partner who is not a guarantor holds the cash, a lender may not count it toward the guarantor’s reserves. Sort out whose accounts will cover the requirement before you apply.
Standard programs lend up to $3,000,000, and above $2,500,000 the network generally holds to 30-year fixed structures. Seasoning is the waiting period between buying and refinancing. Plan on about 6 months of ownership, measured from title recording.
Co-Borrower, Co-Signer, Guarantor: Who Is Who?
These words get mixed up, and the difference matters. Bankrate’s cosigner versus co-borrower comparison explains that a co-borrower shares repayment responsibility and a legal claim to the asset, while a cosigner takes on repayment responsibility without ownership. Credit impact applies to both.
On a rental file, the typical roles are narrower:
- Co-borrower in personal names. Signs the note, usually goes on title, and shares liability.
- Guarantor on an LLC loan. Signs a personal guaranty. The entity holds title, but the guarantor’s credit is read and the standard loan is full recourse to the guarantor.
- Entity partner. Owns a share of the LLC. Whether they must guarantee depends on a minimum ownership share, which varies by lender.
For a brief agency contrast, owner-occupied mortgages follow a separate rulebook. Fannie Mae’s Selling Guide defines guarantors, co-signers, and non-occupant borrowers there, including joint liability and title. DSCR loans are not agency products, so those rules do not set your leverage. Lendmire’s piece How Lenders Count a Co-Borrower on a Rental Cash-Out Refinance covers the DSCR-specific treatment in more depth.
Where the General Rule Breaks
The rule that a co-borrower cannot raise the loan holds up well. These edge cases change who must sign, what counts, or how much cash reaches you.
LLCs with several members. Passive members under a lender’s ownership threshold may only be credit-checked. Members above the threshold sign. With three or more members, expect the larger owners to carry the guaranty. Thresholds differ, so confirm before you restructure ownership.
Partner buyout. If the refinance pays out a co-owner, that payout counts as cash returned at closing, so it sits under the cash-out cap. A holdout co-owner who will not sign blocks a lien on their interest. Buy them out first, or exclude the property from the plan.
Short-term rentals. Cash-out leverage is lower, at about 70% on short-term-rental collateral compared with about 75% on a standard rental. Expect a 640+ credit score and about 12 months of hosting history, with a coverage floor of 1.00 on refinances. A co-borrower does not change those requirements. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
Ineligible property types. Manufactured homes (single- and double-wide), log homes, and barndominiums are not offered through the network’s DSCR programs. No co-borrower arrangement changes that.
Removing someone later. Taking a co-borrower off a loan generally requires a refinance. A guarantor is typically released only by sale, payoff, or refinancing into a loan without a guaranty.
Moving title into an LLC. If you want an LLC to hold the property, refinancing into the LLC at closing is usually cleaner than moving a mortgaged property into the entity beforehand. Sort out who holds title before you apply.
Credit reporting. Whether an entity-borrower DSCR loan shows up on personal credit varies by lender and servicer. Ask before you sign.
| Structure | Who signs the note | Who holds title | Credit read |
|---|---|---|---|
| Two personal co-borrowers | Both | Usually both | Both |
| LLC with one guarantor | The entity | The entity | Guarantor |
| LLC with several members | The entity | The entity | Members over threshold |
| Partner buyout | Remaining owner(s) | Remaining owner(s) | Signers |
When Does a Co-Borrower Help, and When Does It Hurt?
A co-borrower helps when you need a second signature for ownership reasons, such as a spouse or business partner who already holds title. It also helps when that person has stronger credit and the file would otherwise sit in a lower tier. Even then, the lowest score governs, so the stronger person is not lifting the weaker one.
It hurts when the added person has lower credit, because the file can drop a tier and lose leverage. It also hurts when the reason for adding them is to cover thin rent. The coverage ratio does not move, so the loan simply shrinks.
There is also shared liability. Each co-borrower can be pursued for the full debt. Each new application can trigger another credit pull, so think about portfolio effects before you apply across several properties.
A decision path helps. Check your rent against the payment you expect on the new loan first. Check the credit scores of everyone who might sign second. Settle the title and entity structure third. Only then compare the file with and without the extra person.
Stronger rent can lift coverage, but it never erases leverage caps, credit floors, reserve rules, or property eligibility. The strongest files clear two tests at once: enough equity and enough rental coverage.
Key Terms Defined
DSCR: the monthly rent divided by the full monthly obligation on the property.
PITIA: principal, interest, taxes, insurance, and any HOA dues, added together for one month.
LTV: the loan amount as a percentage of the property’s appraised value.
Co-borrower: a second person who signs the note, shares repayment responsibility, and usually shares title.
Guarantor: a person who personally backs a loan taken by an entity, usually an LLC.
Seasoning: the waiting period after you buy before a lender will do a cash-out refinance.
Reserves: cash you keep in accounts after closing to cover the payment obligation for a set number of months.
Frequently Asked Questions
Does my co-borrower’s income increase how much I can take out?
No. DSCR loans qualify primarily on property-level rental income covering the payment, subject to lender guidelines. Wages are not calculated and no personal debt-to-income test runs. The co-borrower’s credit still gets read, and it can change your tier.
Whose credit score does the lender use?
Typically the lowest middle score among everyone on the file. Each person’s middle score is found first, then the lowest places the file in a leverage and pricing tier. A strong partner does not lift a weak score.
Can a co-borrower lower my cash-out amount?
Yes, indirectly. If the added person has weaker credit, the file may move to a tier with a lower leverage cap. The property’s value limit and rent limit are unchanged, but the tier controls which cap applies.
What if my co-owner will not sign?
Then a lien cannot attach to their interest. Buy them out first, or restructure so that only the signing owners are on the property. A buyout payout counts as cash returned at closing, so it sits under the cash-out cap.
How do I remove a co-borrower later?
Usually through a new refinance. Plan ahead if you expect the ownership group to change.
If you are buying or refinancing a rental property and want to see how the numbers work, Lendmire, a mortgage broker arranging DSCR financing through select lenders across 41 markets including Washington, D.C., can help you compare DSCR loan options based on the property income, credit profile, leverage, and investor goals. Qualification is subject to lender guidelines, credit approval, and property review. This is not a commitment to lend.
For how equity extraction works on an investment property, see Lendmire’s guide to cash-out refinance on an investment property.
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. The Motley Fool’s explainer
2. Adventures in CRE: Debt Service Coverage Ratio
3. Bankrate: Cosigner vs. Co-Borrower Difference
4. Fannie Mae Selling Guide B2-2-04: Guarantors, Co-Signers or Non-Occupant Borrowers
This article is part of Lendmire’s investment property cash-out refinance program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How to Do a Cash-Out Refinance on a Rental as an Investor · How Much Cash Comes Out of a Short-Term Rental Cash-Out Refinance to Buy Out an Ex-Spouse? · Can a DSCR Cash-Out Refinance Remove an Ex From the Rental’s 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.