The Quick Read: A HELOC draw supports a second-home price equal to the cash it provides divided by the down-payment percentage, trimmed for closing costs and reserves, then capped by the DTI room left for the line’s payment, so the lower of those two ceilings is the price that holds.
The first ceiling is a down-payment ceiling. The second is a personal debt-to-income ceiling that applies to the line itself. Most investors find the DTI ceiling binds before the equity does.
How large a line the equity supports.
An equity line is sized by combined loan-to-value, occupancy, and credit — not by rental coverage. Switch the occupancy or the credit band and the ceiling moves with it.
Investment-property lines require a 700 minimum credit score; second-home lines start at a 640 minimum and primary-residence lines at 600, and the combined-LTV ceiling steps down as the credit band drops on primary-residence and second-home lines and holds on investment-property lines; the line cap steps down on primary-residence lines and holds at every tier on investment-property and second-home lines.
A debt-to-income ratio above 45% requires 680+ credit. Profiles under 640 are limited to single-family homes. At least 75% of the approved line is drawn at closing. Ceilings, floors, and caps update from Lendmire’s centralized guideline source.
Line estimate
Illustrative estimate only — not a quote, Loan Estimate, approval, or commitment to lend. The rate is an editable assumption; equity-line pricing is variable through both the draw and repayment periods and never converts to fixed. Occupancy and credit drive the ceiling together: an investment property tops out at 70% combined LTV (minimum credit 700, line cap $500,000); a second home tops out at 90% combined LTV (minimum credit 640, line cap $500,000), with the ceiling stepping down as the credit band drops (the cap holds at every tier); a primary residence tops out at 90% combined LTV (minimum credit 600), and its $750,000 maximum line is available only at 75% combined LTV or below with a 700-or-better credit profile (720 on the longer-runway program) and a full appraisal. Lines above $500,000 require a full appraisal. Credit, debt-to-income, property type, and full underwriting review all affect the final line.
- At 20% down, each dollar of draw supports about five dollars of price. At 25% down it supports about four.
- Closing costs and reserves come out of the same draw, so the real price ceiling sits below the headline math.
- The HELOC is underwritten to you personally. The DSCR purchase loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines.
- On the wholesale network, the line is qualified on the interest-only payment at the maximum draw, with a 50% DTI maximum.
- The line’s payment never enters the DSCR ratio, but it still comes out of your cash every month.
Key Terms Defined
HELOC: A home equity line of credit, a revolving line secured by a property you already own.
CLTV: Combined loan-to-value, which is your first mortgage plus the new line, divided by the property’s value.
DTI: Debt-to-income, which is your monthly debt payments divided by your gross monthly income.
DSCR: Debt service coverage ratio, which is a rental property’s monthly rent divided by its monthly principal, interest, taxes, insurance and any HOA dues (PITIA).
Draw period: The stretch when you can borrow against the line, usually with interest-only payments.
Seasoning: The time borrowed money sits in your account, or on your credit report, before a purchase lender relies on it.
How the Two Ceilings Work Together
The price you can buy is the lower of two numbers. The first comes from equity and the down-payment percentage. The second comes from how much monthly payment your income can carry once the line is open.
Most articles on this topic stop at the first number. Investors who stop there often find that the line they sized on paper is larger than the line they can qualify for.
The sequence is simple:
1. Size the line from equity and the CLTV cap.
2. Convert the draw into a price using the down-payment percentage.
3. Subtract closing costs and reserves.
4. Test the line’s payment against DTI.
5. Take the lower result.
How Is the Line Sized From Your Equity?
The line equals the CLTV cap times the property’s value, minus what you owe on the first mortgage. The cap depends on how the property securing the line is occupied and on credit tier.
That occupancy label is the property securing the line, not the property you plan to buy. Select lenders in Lendmire’s wholesale network set ceilings by occupancy.
| Property securing the line | Credit | Max CLTV | Max line |
|---|---|---|---|
| Primary residence | 720+ | 90% | $500,000 |
| Primary residence | 700+ | 75% | $750,000 |
| Second home | 720+ | 90% | $500,000 |
| Investment property | 700+ | 70% | $500,000 |
Lower credit tiers exist on primary and second-home lines, with lower CLTV caps. The 90% figure exists only at a 720-or-better profile. An investment-property line never goes above 70% CLTV.
A line above $500,000 is available only against a primary residence. It requires a credit profile of 700 or better (720 on the longer-runway structure), caps at 75% CLTV, and requires a full appraisal.
Lines at or below $500,000 ordinarily run an automated valuation instead of a full appraisal. A higher CLTV can trigger a second valuation. Your equity estimate can move when the valuation comes back.
Two wholesale structures exist for primary residences and second homes, and this article names them by their key feature:
- The higher-leverage program has a 3-year interest-only draw and a 17-year fully amortizing repayment.
- The longer-runway program has a 5-year draw and a 25-year repayment.
Investment lines run the longer-runway structure only. At least 75% of the line is drawn at closing on both programs. Pricing floats during both the draw and the repayment period and never converts to fixed.
That last point matters for sizing. You cannot open a large line and leave most of it untouched. Most of it is drawn and carrying a payment from the start.
Availability is also narrower than the DSCR footprint. These lines are offered only in Lendmire’s 16 full-service states, while DSCR investor loans run across 41 markets, including Washington, D.C.
A worked example in percentages:
- You hold a primary residence with a first mortgage at 50% of its value.
- Your credit profile is 700 or better.
- The cap is 75% CLTV.
- The line equals 25% of the home’s value.
What Second-Home Price Does a HELOC Down Payment Support?
The price equals the cash you put in divided by the down-payment percentage. A draw covering 20% down supports a price five times the draw. A draw covering 25% down supports four times the draw. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
On the purchase side, most DSCR files land at 75% to 80% LTV, which means 20% to 25% down. Select programs reach 85% LTV with roughly a 700 score, which means 15% down. At 15% down, each dollar of draw supports about 6.7 dollars of price. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.
Back to the example above. A line equal to 25% of the current home’s value, at 20% down, supports a purchase price of about 1.25 times that home’s value. That is the headline math. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
Then closing costs and reserves come out of the same cash. Say one-fifth of the draw goes to those items. Only four-fifths of the draw is left as a down payment, and the price ceiling drops to about the value of the current home.
Reserves are commonly around six months of PITIA, though they vary by lender, leverage, loan size and transaction type. Whether borrowed funds can cover reserves is program-dependent, and on many files they cannot.
If you add your own savings, the formula becomes:
- Price = (draw + own cash − closing costs − reserves) ÷ down-payment percentage.
Every dollar of your own cash raises the ceiling by the same multiple, which makes seasoned savings a more affordable way to lift it. Nasdaq’s guide to using a HELOC for a down payment makes the same point: the amount of equity limits how much a HELOC can provide.
How Does DTI Cap the Draw?
DTI caps the draw because the line is underwritten to you, not to the property you are buying. On the wholesale network, the maximum DTI is 50%, with a 45% limit for credit profiles from 600 to 679. A ratio above 45% requires a 680 minimum.
The payment counted is the interest-only payment calculated on the maximum draw. That is the payment on the full amount you could borrow, not the amount you plan to use.
Here is the DTI math in points of income:
- Your existing monthly debts already use some share of your gross monthly income.
- The room left under the cap is what the line’s payment can occupy.
| Existing debts as % of income | Room under 50% | Room under 45% |
|---|---|---|
| 20% | 30% of income | 25% of income |
| 35% | 15% of income | 10% of income |
| 45% | 5% of income | — |
The draw that fits is the one whose interest-only payment stays inside that room. Because pricing floats, a rising index shrinks the draw that fits the same room.
To work backward, start from the room and shrink the draw until the payment fits. Then convert the draw to price using the first ceiling.
Investors with heavy existing debt often discover the DTI room is gone before the equity is. A smaller draw plus more own cash is usually a better combination than a maximum draw alone.
Does the Purchase Loan Count the HELOC Payment?
On a DSCR purchase, the HELOC payment generally stays outside the DSCR ratio. 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 ratio compares rent to PITIA on the new property and nothing else. A larger down payment shrinks the new loan’s payment and can lift the ratio. It never erases leverage caps, credit floors, reserve rules or property eligibility.
Most standard programs start at 1.00 coverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted.
A ratio above 1.00 is not positive cash flow. Repairs, vacancy, management, utilities and capex sit outside the calculation. And the HELOC payment sits outside it too, which is why the ratio can look comfortable while cash flow is thin.
Picture a rental that clears roughly 1.2x. The investor still carries the DSCR loan, which rent is meant to cover, and the HELOC payment, which rent was never tested against. Between them, they are financing close to the whole purchase.
For a purchase that stays a true second home rather than a rental, the answer changes. A residence purchase is reviewed on personal DTI, and the new payment counts alongside the line’s payment. That is a different test. The DSCR path applies to rental purchases.
What Does the Purchase Lender Do With Borrowed Funds?
The purchase lender asks where the money came from and whether the program accepts it. A HELOC is secured by an asset, so it is treated differently from an unsecured loan or a credit-card advance.
The Nasdaq article above also notes that lenders generally want a larger down payment on a second home. Within the DSCR network, treatment of borrowed funds is program-dependent.
Three things vary from program to program:
- Whether borrowed money can count toward the down payment at all.
- Whether any share of the down payment must come from your own seasoned cash.
- Whether borrowed funds can also cover reserves.
One practitioner guide describes about 60 days of seasoning for HELOC balances as a market habit. That is a market-wide figure, not a network rule. The network’s own answer depends on the program.
The practical habit is to move the draw into its own account. That keeps the source of funds traceable and gives the purchase lender a clean paper trail.
One contrast shows why the occupancy label matters. In the agency world, the Fannie Mae Selling Guide on personal gifts does not allow gifts on an investment property, while it treats a second home differently. DSCR loans are not agency products, so the program decides here. The takeaway is only that calling a purchase a second home or an investment changes the answer.
Lendmire’s piece How to Source a Down Payment on a Second-Home Bank Statement Loan covers the documentation side in more depth.
Where the General Rule Breaks
The general rule is that the lower ceiling wins. These edge cases move one or both of the numbers that set those ceilings.
The securing property’s occupancy. A primary-residence line gets more CLTV than an investment-property line. Pulling equity from a rental caps at 70% CLTV and requires a 700 score. The same equity in your primary home may be reachable at a higher cap.
Title and entity. A HELOC needs the property held by you as an individual or by an inter vivos revocable living trust. LLCs, corporations, partnerships and irrevocable, blind or land trusts cannot hold title. A property already deeded to an LLC needs a vesting change first, or a DSCR cash-out refinance instead. The DSCR loan on the new purchase can often close in an LLC, subject to program terms.
Exposure limits. A borrower is limited to three lines. Combined exposure caps at $2,000,000 on the higher-leverage program and $750,000 on the longer-runway program. A borrower with more than 15 financed properties is not eligible.
Property types. The line can secure a single-family home, a 2-4 unit property, a PUD, a townhome or a condominium, including non-warrantable condos. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use and agricultural-zoned properties are not offered. On the DSCR side, manufactured homes, log homes and barndominiums are not offered either.
Credit history. A bankruptcy needs four years of seasoning on both programs. Foreclosure-family history splits: one program seasons a foreclosure at seven years and a short sale or deed-in-lieu at four, while the other declines that history regardless of age.
Zero-balance lines. Once you draw, the resulting payment is what gets counted.
Tax treatment. 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.
What Happens When the Draw Period Ends?
When the draw period ends, you can no longer borrow and the line enters repayment. Principal joins the payment. On the wholesale network, the higher-leverage program repays over 17 years and the longer-runway program over 25.
The CFPB’s explanation of a HELOC describes the same shape: a draw period, then a repayment period, with pricing that usually floats so payments can change from month to month. Missed payments put the primary residence at risk, a point the Nasdaq piece above also makes.
Model the step-up before drawing. Run the payment as fully amortizing, then test it against a higher index. If the investor’s cash flow breaks at the step-up, the draw is too large.
What the Investor Decision Looks Like in Practice
Sequence matters. Open the line, fund it into its own account, then get the purchase lender’s view on borrowed funds. Only then make an offer.
Here are the usual levers when the two ceilings fall short:
| Lever | Effect on the ceilings |
|---|---|
| Smaller draw | Lowers payment, lowers price |
| More own cash | Raises price, no extra DTI |
| Pay down other debt | Opens DTI room |
| Lower target price | Cuts cash needed |
| Higher credit tier | Raises CLTV cap |
Common mistakes:
- Sizing on equity alone. The DTI ceiling is often lower.
- Ignoring closing costs and reserves. They come out of the same pot.
- Assuming the HELOC lowers the DSCR. It sits outside the ratio but still reduces real cash flow.
- Assuming any purchase lender accepts HELOC money. Treatment is program-dependent, so ask before drawing.
- Stacking lines. Each additional line adds a payment that must be covered, and portfolio cash flow strains fast.
Investors who want the full picture of how rental purchases are reviewed can start with Lendmire’s complete DSCR loans guide. The related piece How Much Down Payment a HELOC Bridge Raises on Your Current Home covers the line-sizing side from the other direction.
Frequently Asked Questions
Can a HELOC cover the whole second-home down payment?
Sometimes, depending on the purchase program. Some programs limit how much of the down payment can come from borrowed funds, and many also want part of it from your own seasoned cash. Ask the purchase lender before you draw, because treatment varies by program.
Does a HELOC count in DTI before I draw?
Because most of the line is drawn at closing, an open line with no balance is not the usual case. At the line’s own approval, the wholesale network is reviewed on the interest-only payment at the maximum draw, so the full line counts then. Once you draw, the resulting payment is what gets counted going forward.
Does the HELOC payment lower my DSCR?
Generally no. The DSCR ratio compares rent to the new property’s PITIA only. The line’s payment still comes out of your cash every month, so a comfortable ratio can sit next to thin cash flow.
What is the maximum I can borrow against an investment property?
On an investment-property line, the ceiling is 70% CLTV, with a 700 minimum credit profile and a $500,000 maximum line. There is no higher tier. Primary-residence and second-home lines can reach 90% CLTV only at a 720-or-better profile.
Can I use an LLC-owned property to secure the line?
No. Title must sit with you as an individual or with an inter vivos revocable living trust. A property already in an LLC needs a vesting change first, or a DSCR cash-out refinance instead.
Next Step
If you are considering a home equity line and want to see how the numbers work, Lendmire can help you compare HELOC options based on the property, the equity available, credit profile, combined leverage and your goals. Qualification is subject to lender guidelines, credit approval and property review. This is not a commitment to lend.
About Lendmire
Lendmire is a mortgage brokerage (NMLS# 2371349) arranging home equity lines of credit — primary-residence, second-home and investment-property lines — through a wholesale lending network in its 16 full-service states. Eligibility is determined by the lender on each file. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. Nasdaq – How to Use a HELOC for a Down Payment
2. Financedevil – How to Use a HELOC for a Down Payment on a Second Home or Investment Property
3. Fannie Mae Selling Guide B3-4.3-04 – Personal Gifts
4. CFPB – What is a home equity line of credit (HELOC)?
This article is part of Lendmire’s home equity line of credit program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How Much Home a First-Lien HELOC Down Payment Supports After DTI · How to Use a HELOC Draw as a Documented Rental Down Payment · How a Seasonal Business Funds Inventory With a Bank Statement HELOC
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Disclosure information. Lendmire is a state-licensed mortgage brokerage under NMLS# 2371349. Lendmire is not a depository institution, direct lender, or financial advisor — all loans referenced are placed through wholesale lender partners and are subject to each lender's underwriting standards. This article is provided for general informational purposes and is not a commitment to lend, nor does it constitute financial, legal, or tax advice. Loan programs, terms, rates, and qualification standards change without notice and depend on borrower profile, property type, and the state in which the subject property is located. Equal Housing Opportunity provider. NMLS Consumer Access: nmlsconsumeraccess.org.