The Quick Read: Compare a new loan with a HELOC on blended cost, payment path and risk, never on the headline number alone. A HELOC leaves your low first mortgage in place and prices only the money you draw, while a cash-out refinance replaces the first lien and reprices the whole balance.
- A HELOC adds a second payment. A cash-out refinance swaps one payment for a larger one.
- HELOC pricing floats, and the payment can step up when the draw period ends.
- On an investment property in Lendmire’s network, a HELOC tops out at 70% CLTV and a $500,000 line.
- Title matters: an LLC cannot hold title on these lines, and a DSCR cash-out can.
- Clearing 1.00 coverage on a DSCR cash-out is not the same as positive cash flow.
A lock-in homeowner holds a first mortgage priced well below today’s market. The New York Fed notes that owners locked in below the prevailing rate are discouraged from cash-out refinancing, and that rising home prices and loan paydown have built equity that could support HELOC demand. The authors also say it is unclear whether that demand will last.
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.
Lendmire is a mortgage broker. It arranges financing through select wholesale lenders across 41 markets, including Washington, D.C. HELOCs are narrower: they are available only in 16 full-service states. Everything below is subject to lender guidelines and full file review, and none of it is a commitment to lend.
Why Does Keeping the First Mortgage Change the Comparison?
Because the two products price different balances. A HELOC leaves the legacy loan alone and applies its floating price only to the drawn amount. A cash-out refinance puts the new price on the entire new balance, old money included. That is the whole trade, and most bad comparisons skip it.
Scale matters here. Wolf Street, working from FHFA data, reports that 50.6% of outstanding mortgages sat below 4% at the end of 2025, down from more than 65% at the early-2022 peak. The decline is slow. A single national figure also hides a wide spread: an owner holding a legacy loan near the middle of the range faces a very different trade than an owner at the bottom of it.
So the question is never “which rate is lower?” It is “what does the whole stack cost, and what happens to my payment later?”
Key Terms Defined
HELOC: A revolving line secured by the property, drawn as needed, with a floating price.
CLTV: Combined loan-to-value, meaning all liens added together and divided by the property value.
Draw period: The stretch when you can borrow from the line, usually with interest-only payments.
Repayment period: The stretch after the draw ends, when the balance amortizes.
Blended cost: The weighted average cost of the old loan plus the new money, across the full balance.
DSCR cash-out: A first-lien refinance that qualifies primarily on property-level rental income covering the payment, subject to lender guidelines.
What Are the Options Side by Side?
Two structures cover most lock-in decisions on a rental or a home: a HELOC and a cash-out refinance. This table shows the structural differences. It carries no pricing.
| Factor | HELOC | Cash-out refinance |
|---|---|---|
| First mortgage | Stays in place | Replaced |
| New pricing applies to | Drawn amount only | Whole new balance |
| Payments | Two | One, larger |
| Funds | Revolving, as needed | Lump sum |
| Underwriting | Borrower-based | Property-based on DSCR files |
| Main risk | Floating price, line freeze | Losing the legacy rate |
The CFPB HELOC booklet explains that HELOC pricing is typically an index plus a margin, and that payments can change even if you do not draw more.
The Step-by-Step Comparison Method
Run the comparison in this order. Skipping steps is how files end up with a payment the borrower did not expect.
1. Pull the first-mortgage facts. Gather the balance, remaining term and any lien restrictions in the first lender’s documents. Some first mortgages restrict added liens, so read the covenants before you apply for anything.
2. Define the amount and the timing of the need. One large payoff or down payment favors a lump sum. Staged or uncertain spending favors a line. Draw only what the plan needs, because the full line is not free money.
3. Compute the blended cost. Weight the legacy loan and the new money by balance. Compare that blend against the single new loan. Never set the HELOC’s price next to the new first lien’s price in isolation, since they apply to different balances.
4. Model the HELOC payment in three states. Check today’s payment, the payment after the draw period ends, and the payment if the floating price moves higher. On an interest-only draw, the payment is the drawn balance times the price, divided by twelve. Repayment then adds principal.
5. Check CLTV headroom. Add every lien, divide by value, and compare to the ceiling for your occupancy. A recent high-leverage purchase or a recent cash-out can leave little room.
6. Check title and vesting. The line must sit in your individual name or a revocable living trust. More on that below.
7. Tally closing costs and holding period. Fees vary by product and lender. A short holding period favors the option with lower upfront cost. A long one favors the option with the better blended cost.
A Worked Comparison
Consider an investor with a rental carrying a low-priced first mortgage and a need for a down payment on the next property. The investor owns the rental in their own name.
The HELOC path keeps the first lien. Only the drawn money floats. If rent on the existing property already covers the first mortgage with room to spare, the second payment is carried from the investor’s other income, since the line underwrites the borrower. Qualification includes a DTI of 50% maximum, tested on the interest-only payment calculated on the maximum draw.
The DSCR cash-out path replaces the first lien. Say the property clears coverage near 1.2x on the current loan. A larger new balance at a new price pushes the payment up, so the same rent produces a lower ratio. That ratio, not the equity, can set the proceeds ceiling. Equity might allow more. Coverage might not.
Run both and compare the outcomes on three lines: blended cost, payment after the draw period, and what each does to coverage on your next purchase.
What Does the Network Actually Allow on an Investment HELOC?
On an investment property, the line runs from $25,000 to $500,000, with a ceiling of 70% CLTV and a 700 minimum credit score. That is the full investment tier. No higher-leverage investment tier exists in the network.
Primary residences and second homes follow separate tables. A primary residence can reach 90% CLTV, but only at a 720 credit profile and a line up to $500,000. A line above $500,000 is primary-residence only, requires 700 or better (720 on the longer-runway structure), caps at 75% CLTV, and requires a full appraisal. Second homes reach 90% CLTV at 720 with a $500,000 cap.
Two draw structures exist on primary residences and second homes. One runs a 3-year interest-only draw with a 17-year repayment. The other runs a 5-year draw with a 25-year repayment. Investment lines run the 5-year draw and 25-year repayment structure only. At least 75% of the line is drawn at closing, and pricing floats through both periods. It never converts to fixed.
Lines at or below $500,000 ordinarily use automated valuation. Anything above $500,000 gets a full appraisal.
Where the Payment Moves Against You
The HELOC risk is not the first payment. It is the payment after.
The CFPB HELOC booklet describes a repayment period that often runs ten or fifteen years after the draw ends, and says some plans instead require the balance to come due at once as a balloon. It also says a lender can freeze or reduce a line if home value falls or the borrower’s finances worsen.
That freeze can hit a borrower who pays on time. The Federal Reserve says a lender must send written notice within three business days after a freeze or reduction takes effect, and must reinstate privileges when the cause no longer exists. These are consumer materials written mainly for owner-occupied homes. Investment-property lines can be structured differently, so read the actual line agreement and do not assume the same protections apply to a business-purpose loan.
The practical rule: never plan a purchase closing around a line you have not already drawn. Draw first, then shop. Note that at least 75% of the line is drawn at closing on these programs, which changes the interest-only math from day one.
Where the General Rule Breaks
Lock-in is not binary. An owner a little below today’s market has a closer call than an owner far below it. No universal cutoff exists, and the answer moves with loan size, holding period and how much of the balance is new money.
Entity-held rentals. Title and vesting is the sharpest structural difference from a DSCR loan. Fee simple or leasehold title must be held by the individual borrower or a 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 or a DSCR cash-out instead. Moving a mortgaged property out of an LLC can raise due-on-sale and title-insurance questions, so involve the first lender and the title insurer before any deed.
Short-term rentals. The cash-out path for short-term rentals tops out at 70% and expects about 12 months of hosting history. Rent evidence is more contested and the lender pool is narrower than on long-term rentals.
Property type. HELOC-eligible types include single-family, 2-4 units, PUDs, townhomes and condominiums, including non-warrantable. Manufactured homes, co-ops, condotels, log homes, commercial, mixed-use and agricultural zoning are not offered. Modular factory-built homes qualify on one structure only.
Exposure limits. A borrower is limited to three lines, and an owner of more than 15 financed properties is not eligible.
Credit history. A bankruptcy needs 4 years of seasoning from discharge or dismissal. Foreclosure-family history splits by program, and investment files follow the 7-year foreclosure and 4-year short-sale or deed-in-lieu path.
An adjusting first mortgage. If the first loan is an ARM about to reset, the lock-in logic weakens and the comparison changes.
When a DSCR Cash-Out Wins
A DSCR cash-out wins in a handful of situations. The first is an entity-held rental. The second is a need above the HELOC cap. The third is a borrower whose personal DTI blocks a line even though the property carries itself.
On a DSCR cash-out, qualification runs primarily on property-level rental income covering the payment, subject to lender guidelines. Across the network, cash-out refinance tops out at roughly 75% LTV on a standard rental, and about 6 months of seasoning is the common expectation. A short-term rental cash-out is capped at 70%. Credit minimums run from a 620 floor in parts of the network to about 660 on most programs, and 700+ unlocks the strongest leverage. Loan sizes run up to $3,000,000 on standard programs (smaller balances available through select lenders). Reserves vary by lender, leverage and loan size, and commonly run about 6 months of PITIA.
Coverage deserves care. 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. And a ratio at or above 1.00 does not mean positive cash flow. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities and capex sit outside the calculation.
The cost is the legacy rate. Pulling cash this way reprices the whole balance and raises the debt service the ratio divides rent into. Lendmire’s piece How Much a Lock-In Landlord Saves With a Rental HELOC Over a New First covers that landlord-side trade in more depth, and the complete DSCR loans guide explains how the coverage test works.
An operator note: title is a common place for files to stall. The borrower assumes the LLC can sign for the line, the vesting change surfaces late, and the comparison has to restart. Settle title first.
Qualifying and Process Notes
HELOC underwriting looks at the borrower. DTI tops out at 50%, with 45% for profiles from 600 to 679, and a ratio above 45% needs a 680 minimum. The credit report cannot be older than 90 days at closing, and there are no rescores. A score model keyed to the primary wage earner is used.
Minimum subsequent draws after closing are $1,000 on one structure, and Texas sets a higher minimum. A property listed for sale, or listed within the past 60 days, is ineligible in some states, and New Mexico and Ohio apply CLTV caps that depend on the credit profile. Texas primary residences follow separate homestead rules. Confirm state specifics before you build a plan.
A larger down payment on a later purchase lowers the monthly obligation and can lift coverage. 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. 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.
One more cost to model: on a sale, the CFPB HELOC booklet says a HELOC generally must be paid off in full immediately. Plan the exit before you plan the draw.
A Decision Recap
- Need staged cash, hold title personally, and want to keep the legacy loan: the HELOC is the first comparison.
- Hold title in an LLC, need more than the line cap, or want one payment: price a DSCR cash-out.
- Not sure: run blended cost and the three-state payment test on both before choosing.
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. Reach the team at 828-256-2183 or request a quote. The site’s illustrative calculator gives an estimate only, not a quote.
Frequently Asked Questions
Will a new loan make me lose my low first-mortgage rate?
A cash-out refinance does, because it replaces the first lien and prices the whole new balance. A HELOC does not touch the first lien. Only the amount you draw carries the line’s floating price.
Is a HELOC always cheaper than a refinance?
No. The HELOC’s price floats, and the payment can step up when the draw period ends. A refinance can win when the new money is large relative to the legacy balance, when you want one payment, or when title sits in an LLC. Compare blended cost and the post-draw payment, not the headline number.
Can I fix the price on a HELOC?
Not on the lines in Lendmire’s network. Pricing floats through both the draw and the repayment period and never converts to fixed. Some lines elsewhere offer a fixed-conversion feature, so confirm terms on any line outside this network.
What happens to the HELOC if I refinance the first mortgage later?
The line stays a separate lien, so it has to be paid off or kept in place and handled at closing. A DSCR refinance or purchase file will look at the line’s balance and payment. Plan for that before you draw.
Can an LLC take out an investment HELOC?
No. Title must be held by the individual borrower or a revocable living trust, so a property already deeded to an LLC needs a vesting change or a DSCR cash-out. Check due-on-sale and title-insurance questions before any deed transfer.
How do I calculate a blended cost?
Multiply each loan’s balance by its cost, add the results, and divide by the total balance. Do it for the HELOC plus the first mortgage, then compare it with the single new loan. Run the draw period, the repayment period and a higher-price scenario.
About Lendmire
Lendmire, NMLS# 2371349, is a mortgage brokerage that arranges home equity lines of credit through wholesale lending partners in its 16 full-service states. Lines on primary residences, second homes and investment properties are each reviewed individually by the lender under the program’s occupancy, credit and combined-loan-to-value guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. New York Fed Liberty Street Economics: Mortgage Lock-In Spurs Recent HELOC Demand
2. Wolf Street: Update on the Lock-In Effect in the Housing Market
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: Can You Cash Out a Condotel With a Super Jumbo DSCR Loan? · Can a Condo Building in Litigation Still Get a Rental HELOC? · How to Borrow Against a Free-and-Clear LLC-Owned Rental
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.