How Much Replacing a Low First Mortgage Costs vs. a Bank Statement HELOC

The Quick Read: Replacing a low first mortgage with a DSCR cash-out refinance reprices the entire balance, while a bank statement HELOC leaves the first loan alone and prices only the new money. A DSCR cash-out suits an investor whose strength is the property’s rent and who holds title in an LLC. A bank statement HELOC suits an investor with strong deposits and personal title who wants to keep a low first untouched.

• A cash-out refinance resets the whole balance and term, and closing costs apply to the full new loan.
• A HELOC adds a second loan behind the first, so the low first mortgage stays exactly as it is.
• On an investment property, the network’s HELOC tops out at $500,000 and 70% combined loan-to-value (CLTV), subject to lender guidelines.
• A property held in an LLC generally cannot take that HELOC without a title change. A DSCR loan can often keep the LLC, subject to lender program eligibility.
• Bank statements change how income is documented. They do not loosen leverage caps, credit floors, or property rules.

Side-by-Side

The table below compares the two routes using published industry norms for the bank statement side and typical network guidelines for the DSCR side. Lendmire places both through its wholesale network, and every figure is subject to lender guidelines and file review.

What Replacing the First Actually Costs

Replacing the first costs more than the closing statement shows. A cash-out refinance is a new first mortgage, so the whole balance moves onto new terms. A HELOC, by contrast, is a second mortgage paid on top of the first, as the Consumer Financial Protection Bureau explains.

Several things change at once:

1. The terms on the full balance. The low first mortgage you spent years paying down is gone. Every dollar of the old balance moves to new terms, not only the cash you pull out.

2. The clock. A new 30-year fixed structure restarts amortization, even if the old loan was well along. Extended 40-year terms and interest-only periods exist through select lenders in the network.

3. The coverage ratio. DSCR means debt service coverage ratio: monthly rent divided by the full monthly payment, including principal, interest, taxes, insurance, and association dues. A bigger loan means a bigger payment, so the ratio drops as you pull more cash.

Clearing 1.00 is not the same as positive cash flow. Repairs, vacancy, management, utilities, and capital expenses sit outside the calculation. Many select programs start at 1.00. A separate select-lender path goes below 1.00, with leverage and terms adjusted.

What a Bank Statement HELOC Costs Instead

A HELOC costs less to set up and more to carry in uncertain ways. The CFPB’s HELOC brochure describes a revolving line secured by the home, with a draw period followed by a repayment period. It generally floats, and the home is at risk if you fall behind. The same brochure notes that some lenders waive upfront costs while others charge fees such as an appraisal.

On the network’s investment line, the details are specific:

• The line runs a 5-year interest-only draw, then a 25-year fully amortizing repayment.
• At least 75% of the line is drawn at closing, so you cannot treat it as a pure standby reserve.
• The cost on the line floats across both the draw and repayment periods and never converts to fixed.
• Lines at or below $500,000 ordinarily use an automated valuation instead of a full appraisal, though you can request one.
• The debt-to-income test (DTI) caps at 50%, calculated on the interest-only payment at the maximum draw.

The bank statement part only changes how income is documented. A lender reads a year or two of deposits and applies an expense factor, instead of relying on traditional personal-income documentation. It is still full underwriting, with credit, DTI, and equity review.

Key Terms Defined

CLTV (combined loan-to-value): the first mortgage plus the new line, divided by the property’s value.

Vesting: how title is held, such as in your own name, a revocable trust, or an LLC.

Draw period: the stretch when you can borrow from the line and pay interest only.

PITIA: principal, interest, taxes, insurance, and association dues, the full monthly obligation DSCR tests against rent.

The First Mortgage Still Counts

Keeping the low first does not take it out of the file. Its balance counts toward combined leverage, so the line must fit under the CLTV ceiling after the first is counted. Its payment counts in a personal DTI test, which matters most on a bank statement file because that route qualifies you personally.

Moving rentals into an LLC while the loans stay in your name does not remove those debts from a personal DTI file. A lender may count the payment without crediting the rent. The DSCR route avoids this problem because it tests the property’s income against its own payment.

Other limits apply on the HELOC side. A borrower can hold three lines at most, and an owner of more than 15 financed properties is not eligible. Credit matters too: the investment line starts at a 700 minimum score, while DSCR files accept lower scores. A 620 floor exists in parts of the network, most programs want around 660, and 700 and above opens the strongest leverage tiers.

When a DSCR Cash-Out Is the Better Fit

Choose the DSCR cash-out when these facts describe your file:

• The property sits in an LLC. The HELOC cannot take title held by an LLC, a corporation, a partnership, or an irrevocable or land trust. Cash-out can often keep the entity, subject to lender program eligibility, with an individual guaranty alongside.
• You need more than the HELOC allows. The investment line stops at $500,000 and 70% CLTV. DSCR cash-out reaches about 75% LTV on standard rentals and 70% on short-term-rental collateral, with loan sizes up to $3,000,000.
• The first mortgage is no longer a bargain. If the old loan’s terms are close to what you could get today, you give up little by replacing it.
• Your income story is the property. The loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. Your deposits and DTI matter less.
• The property type is a duplex through fourplex or a condo. Both routes accept these, so the entity and size questions decide.
• You want a single, predictable payment. One amortizing loan replaces the first, with no second lien and no floating line.

The honest cost is that you lose the low first mortgage and reset the term. Reserves apply as well, commonly around 6 months of PITIA. Conservative files at modest leverage under $1,500,000 can see reserves waived, and loans above that size typically step up to about 9 months. Cash-out seasoning is commonly around 6 months of ownership.

When a Bank Statement HELOC Is the Better Fit

Choose the HELOC when these facts describe your file:

• The first mortgage is the asset. Its low cost and remaining term keep your carrying costs down, and a small draw protects that advantage.
• You hold the property personally. Title in your name or in a revocable living trust is the entry ticket.
• Your deposits are strong and your traditional personal-income documentation is not. Write-offs can shrink taxable income, and a deposit-based income review can tell a fuller story.
• The need is modest. A purchase down payment, a rehab, or reserves for another deal can fit under the 70% CLTV and $500,000 ceilings.
• Your credit is at least 700. That is the program’s entry point for an investment property.

The honest cost is the structure itself. You carry two payments, the line floats, and 75% of it is drawn at closing. Eligibility is also narrower than DSCR. The HELOC runs in a smaller set of states than Lendmire’s DSCR footprint, and it declines properties listed for sale in some of them.

If the property is already in an LLC, the HELOC means re-vesting the deed to yourself first. Review due-on-sale and title-insurance effects with your own counsel and title company before you go down that road. For many investors, that single step settles the question and points them toward the DSCR cash-out.

Where the Savings Shrink

Keeping a low first wins by the largest margin when the draw is small compared with the existing balance. Four things erode that advantage:

• A bigger draw. As the line grows relative to the first, the floating cost covers more of your total debt.
• A first mortgage near current terms. The less your old loan beats today’s, the less you protect by keeping it.
• A floating line. Because the cost on the line never converts to fixed, a rising market moves the carrying cost on your second lien.
• A larger cash need. If you need more than the line allows, you are replacing the first anyway.

Compare the cost of your whole debt stack under each route, not just the new money’s terms. For an illustrative estimate, the calculator on this page can help you test the structure. It does not produce a quote.

Stacking Both Routes

The two routes are not strict alternatives. Some investors use a HELOC for acquisition or rehab, then replace everything with a DSCR cash-out once the property is stabilized. The line must then be paid off at closing. If you re-vested a rental to get the line, plan to deed it back into the LLC.

Others reverse the order. They take a cash-out to a comfortable leverage level, then use a HELOC on the remaining equity where the program allows it. Each added loan tightens the combined leverage, so sequence the deals before you sign the first one.

A Balanced Verdict

Neither route wins on every file. The HELOC wins when you hold title personally, need a modest amount, and own a first mortgage worth keeping. The DSCR cash-out wins when an LLC holds title, the cash need is large, or the property’s rent is a stronger story than your personal documents.

Match the route to your file in this order: title, then size, then the first mortgage’s value. Title often decides the question before cost does. Tax treatment varies; consult a qualified professional before relying on any deduction.

For a deeper walkthrough of the DSCR side, see the complete DSCR loans guide. If you also want to see how the monthly carrying cost of a line compares with replacing the first, Lendmire’s piece How Much a HELOC Costs Monthly vs Replacing a Low First Mortgage takes that angle.

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. As a broker, Lendmire arranges DSCR financing through select lenders across 41 markets, including Washington, D.C. Every file is reviewed individually, and nothing here is a commitment to lend.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage brokerage serving homeowners and real estate investors in its 16 full-service states. Home equity lines of credit are arranged through wholesale lending channels; Lendmire brokers the line and the lender underwrites each application under its occupancy-based guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFPB HELOC brochure