The Quick Read: It depends on three limits, and the smallest one sets your line: the equity limit (combined loan-to-value of up to 70% on a second-lien line against a rental, subject to underwriting), the rent limit (coverage of at least 1.10x on a stress payment for the whole line), and the dollar cap of $500,000 on a second lien. Paying off the old HELOC uses part of the new line, so your usable cash is smaller than the line itself.
- The old balance is paid from the new line’s closing draw, and the old line must be closed and released.
- The old line counts against your combined leverage until the moment it is released.
- The rent test runs on the full credit limit, not on what you draw.
- A rental with no mortgage can take a first-lien line instead, at up to 75% loan-to-value on a rental with a 740 score or better.
How Is the Maximum Line Calculated?
The maximum new line is the property’s value times the allowed combined leverage, minus every lien that stays on the property. Then the dollar cap and the rent test apply. Whichever of the three produces the smallest number is your ceiling.
Here is the sequence a broker walks through on a rental file.
1. Start with value. Lines up to $400,000 use an automated valuation (confidence score of 85 or better) with a property inspection report, or a full interior appraisal. Larger lines need a full interior appraisal. Appraisal waivers are not accepted on this program.
2. Add the liens that stay. On a second-lien line, that is the first mortgage balance. The old HELOC is not on this list if the new line pays it off and it is released.
3. Apply the leverage cap. Divide the first mortgage plus the full new line by value. On a second-lien line against a rental, that combined figure tops out at 70%, at a 720 credit score or better.
4. Apply the rent test. Gross monthly rent divided by the qualifying payment must reach 1.10x.
5. Check the dollar cap. Second-lien lines run from $50,000 to $500,000. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
The U.S. Consumer Financial Protection Bureau’s HELOC booklet describes the same basic sizing logic: apply a percentage to the home’s value, then subtract what is already owed. That is a general rule for any HELOC. The rent test and the program caps above are specific to this DSCR product, available through select programs and subject to underwriting.
Note one detail that surprises many owners. Leverage is tested on the full line limit, not only the drawn balance. A $500,000 line that you plan to draw lightly still counts as $500,000 in the equity test.
What Does Refinancing the Old HELOC Change?
Refinancing changes the lien stack, not the formula. If the new line pays off the old HELOC at closing and that lien is released, the old balance stops counting. Until then it counts in full, so an old line cannot sit beside a new one.
A DSCR HELOC is written one of two ways. It is a standalone second lien behind a first mortgage you keep. Or it is a standalone first lien on a rental with no mortgage. It is never a third lien, and it is never closed together with a purchase. So an existing HELOC has to be paid off and removed from the structure.
Two mechanics matter for sizing.
The payoff comes out of the closing draw. At least 80% of the line is drawn at closing, and the closing draw is never less than $50,000. Later draws are at least $5,000 each. Your cash from the transaction is the closing draw minus the payoff, minus closing costs. On a same-size refinance of the old balance, that can be close to zero.
The 80% draw rule can force extra cash on you. If the old balance is small and the line is large, the required draw exceeds the payoff, and the difference lands in your account. Owners who want only the payoff often size the line near 1.25 times the old balance, so that 80% of the line roughly equals the payoff. The lender’s own calculation governs the final figures.
Across the wholesale network Lendmire works with, the paperwork for the payoff follows the usual pattern. Pull a payoff letter from the old lender. Confirm the old line is closed, not merely zeroed out. A line at a zero balance still counts as a lien if it stays open.
How a given lender in the network handles paying off one HELOC with another is a file-level question. Confirm it before you order the valuation. Also ask how the old line’s note date interacts with the seasoning clocks covered below.
Worked Scenarios: Percentages of Value
These examples use modeled percentages of value, not market data. Each assumes a second lien at a 720 score or better, unless noted. The lender’s calculation governs the real file.
| Scenario | Liens before | Max new line | Result |
|---|---|---|---|
| A: Roomy | First mortgage 40%, old HELOC 15% | 30% of value | Payoff plus real cash |
| B: Break-even | First mortgage 55%, old HELOC 12% | 15% of value | 80% draw equals payoff |
| C: Too thin | First mortgage 66%, old HELOC 6% | 4% of value | Cannot pay off old line |
| D: No mortgage | Old HELOC only, 30% of value | 75% LTV at 740+ | First-lien structure |
In scenario A, the first mortgage uses 40% of the 70% ceiling. That leaves 30% of value for the new line. The old HELOC payoff takes 15%, so the remainder is cash, before costs.
In scenario B, the room is 15% of value. The required 80% draw is 12% of value, which matches the payoff. Net cash is roughly zero, so refinancing buys you only a new draw period.
Scenario C fails on equity. Room is only 4% of value against a 6% payoff. Also check whether 4% of value even reaches the $50,000 minimum line. If it does not, no line exists at all.
Scenario D is different in kind. With no first mortgage, the new line is a first lien. A first lien reaches 75% loan-to-value at 740 or better, and 70% from 700 to 739, on lines up to $500,000. Lines above $500,000 (up to $1,000,000) are capped at 65% loan-to-value at 720 or better. Never assume 75% on a large first-lien line.
The same caution applies to a “paid-off” rental. No mortgage does not mean unlimited borrowing. The leverage cap and the dollar cap still apply.
Which Limit Binds: Equity, Rent, or the Dollar Cap?
Equity binds most often on a rental bought with 20% to 25% down, because the first mortgage already uses most of the leverage ceiling. The dollar cap binds only on high-value properties.
The rent test works like this. Rent used for lender review is the lesser of the appraisal’s Form 1007 market rent and the lease, unless three months of receipts support a lease above market. The qualifying payment is principal and interest on the entire credit limit at the start rate plus 2 percentage points. Taxes and insurance are not part of that payment. A lease in place is required, and a two-to-four-unit property can have at most one vacant unit.
Why does it matter that the test runs on the full limit? A larger line raises the stress payment even if you draw little. So you can have equity room for a big line and still fail 1.10x. The fix is a smaller line, and your line size is then set by rent rather than equity.
On a second lien, confirm on the file how the lender treats the first mortgage payment in its coverage calculation. Do not assume it is in or out.
Credit works differently on each lien. On a second lien, 720 is the floor and the single leverage tier, so a higher score adds eligibility cushion but no extra leverage. On a first lien, the score does set the tier: 740 or better reaches 75% loan-to-value, and 700 to 739 reaches 70%. A borrower who keeps a first mortgage can take only the second-lien structure. Mortgage history matters too: no 30-day late in the last 12 months, and 48 months since a bankruptcy, foreclosure, short sale, or deed-in-lieu.
A declining-market flag on the property lowers the leverage ceiling by 5 points.
Key Terms Defined
Combined loan-to-value (CLTV): the first mortgage balance plus the new line, divided by the property’s value.
Loan-to-value (LTV): the same ratio when the new line is the only lien on the property.
DSCR: gross monthly rent divided by the qualifying payment. This program wants at least 1.10x.
Stress payment: the qualifying payment, calculated on the whole credit limit at the start rate plus 2 percentage points. It is a test figure, not what you actually pay.
Draw period: the stretch when you can borrow from the line. Here it is 5 years, interest-only on the drawn balance, followed by a 25-year repayment period and a 30-year maturity. The rate is variable.
Lien position: where a loan stands in line to be repaid if the property is sold or foreclosed. A second lien sits behind the first mortgage.
Seasoning: the waiting period a lender requires after a purchase or refinance before a new loan is allowed.
When the Numbers Don’t Fit
Run through these in order.
- Equity room is smaller than the old balance. The new line cannot pay off the old one in full. Options are to pay the old line down first, wait for value or principal paydown to improve the stack, or look at a different structure.
- Rent fails 1.10x on the full line. Lower the line size until the stress payment fits. Or raise documented rent where the lease and market rent support it.
- The line is below $50,000. The program has no cell for it.
- You hold a first mortgage and score 700 to 719. The second-lien floor is 720, so a score in this range falls below it on the structure that matches the borrower’s lien stack and does not qualify for this line.
- The property is outside the program. Rural-designated property, row homes, condotels, commercial or agricultural property, leaseholds, land trusts, age-restricted communities, hobby farms, modular or log homes, land contracts, mixed-use property, a property listed for sale in the prior 2 months, and a property with a solar lien are all out. Condominiums, single-family homes, townhomes, PUDs, and two-to-four-unit rentals are eligible property types.
- You are a foreign national or ITIN borrower. This program is for U.S. citizens, permanent residents, and non-permanent residents with a Social Security number.
On timing rules, a rental bought or refinanced inside the last 6 months is not eligible (that clock runs from the last note date to the new note date), and the owner must have held title for 6 months (settlement date to note date).
One more limit applies across a portfolio: at most 5 loans or $2,500,000 per borrower with the program.
DSCR HELOC or Cash-Out Refinance?
A DSCR HELOC is the stronger fit when your first mortgage is worth keeping and you want a revolving line behind it. A cash-out refinance fits when you want to replace the first mortgage anyway. Lendmire’s piece How to Qualify for a DSCR HELOC for Refinancing a Balance Into a New HELOC goes deeper on the file requirements.
| Factor | DSCR HELOC | DSCR cash-out refinance |
|---|---|---|
| First mortgage | Stays in place | Replaced |
| Structure | Revolving line | One fixed loan |
| Draw rules | 80% at closing, later draws $5,000+ | One lump sum |
| Best when | First mortgage terms are worth keeping | You want one new loan |
A related product is the investment-property HELOC qualified on your personal income. In Lendmire’s descriptions of that product, it requires a 700 score, runs from $25,000 to $500,000, caps debt-to-income at 50%, and does not allow an LLC to hold title. Those are that product’s rules, not this program’s. If you want the rent to carry the qualification, that is the DSCR line. Exact terms depend on lender and investor guidelines, credit profile, reserves, and property review.
Many investors also want to understand how this fits into the rest of their financing, and the complete DSCR loans guide covers the wider picture.
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.
Mistakes That Shrink the Line
Assuming the old HELOC does not count. It counts toward combined leverage until it is paid off and released.
Sizing on the drawn balance. Leverage and the rent test both run on the full limit.
Overlooking what a new line resets. Refinancing into a new HELOC restarts the 5-year interest-only draw period. That helps cash flow and delays principal paydown. Costs apply, so compare them with what the new structure saves you.
Expecting the old line to stay. A rental can carry only one second-lien line under this structure. A second line behind the first mortgage and an existing HELOC would put the new line third, and the program never writes a third lien.
Forgetting that HELOCs can shrink. The CFPB’s HELOC brochure notes that a lender may reduce a credit line if the home’s value falls. It also says a HELOC generally must be paid in full when the home is sold.
Treating it like any bank HELOC. Some bank products refuse rentals or LLC title. This program allows vesting in an LLC for investment property, subject to program terms, with the members signing as guarantors.
What to Pull Before You Apply
- The payoff letter for the old line, and proof it will be closed.
- The first mortgage statement showing the current balance.
- The current lease and, where relevant, three months of rent receipts.
- Entity papers if an LLC holds title.
- A credit report for each borrower and guarantor.
The file does not include tax returns, W-2s, pay stubs, or a debt-to-income calculation. The rental qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Your credit, the lease, the rent figure, and the valuation carry the review. Hazard insurance covers both liens, with flood coverage where required. No reserves and no cash to close are required on this program.
Frequently Asked Questions
Can the new line be larger than the old balance?
Yes, if equity room and the rent test allow it. The line can be larger than the payoff, and the extra becomes cash you can use. Remember that at least 80% of the line is drawn at closing, so a much larger line forces a much larger draw.
Does a bigger line hurt my DSCR even if I draw little?
It can. The rent test uses the stress payment on the entire credit limit, so line size drives the ratio. You also cannot leave most of the line unused, because at least 80% is drawn at closing. If the rent test fails, shrink the line until 1.10x clears.
Can my LLC hold the new line?
Yes, on investment property, subject to program terms. The LLC can be on title, the members sign as guarantors, and a title holder who is not a borrower signs a non-borrowing owner acknowledgment. The borrowers on the line need not be the borrowers on the first mortgage.
What if my first mortgage is nearly the whole leverage ceiling?
Then the new line may be too small to pay off the old HELOC. On a second lien against a rental, the first mortgage plus the new line cannot exceed 70% of value. If the leftover room is below the minimum line size or the old balance, the structure does not fit as written.
Which states offer this program?
It is offered in 15 of Lendmire’s 16 licensed states, every licensed state except Tennessee. Lendmire is a broker that arranges the line through a wholesale lender in its network. Programs change and every file is underwritten individually.
Next Step
If you are considering a home equity line on a rental property and want to see how the numbers work, Lendmire can help you compare DSCR HELOC options based on the property, the rent, the equity available, credit profile, combined leverage, and your goals. You can reach the team at 828-256-2183 or request a quote.
Run the three ceilings against your own lien stack before you plan on any cash, since the binding limit often only becomes clear once you price the payoff.
About Lendmire
As a mortgage broker (NMLS# 2371349), Lendmire helps landlords and real estate investors open DSCR home equity lines of credit on their rentals — lines qualified on the property’s rent, never on the owner’s own home — through wholesale lenders in 15 of Lendmire’s 16 licensed states (every licensed state except Tennessee). Lendmire is never the lender; line amounts, ceilings and terms are set by the lender under its guidelines. 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
This article is part of Lendmire’s DSCR HELOC program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: DSCR HELOC Requirements on an Investment Home · DSCR HELOC Requirements to Pay Off an Investment Property Balance · DSCR HELOC Rules With W-2 and LLC Income
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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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.