How Much the Payment Changes When a Jumbo Cash-Out Pays Off a HELOC

The Quick Read: Both old payments disappear, and one fixed, fully amortizing payment on a larger balance replaces them, landing above or below the old combined total depending on five inputs: the payoff size, the new pricing, the term, the old first mortgage’s cost, and how the HELOC was structured. There is no standard percentage jump. The direction and size of the change come from your own file.

• The payment structure changes first. A floating, often interest-only line becomes a fixed payment that includes principal from day one.
• The amount changes second. The new balance must cover the first mortgage payoff, the HELOC payoff, closing costs, and any cash out.
• A cheap legacy first mortgage is a common reason the new payment rises.
• Coverage is tested on the new, larger payment, so a property that cleared the test before can fall short after the swap.
• A larger payment is partly debt paydown, so a higher payment is not always a higher cost.

Key Terms Defined

Jumbo cash-out refinance: a new, larger-balance first lien that pays off existing debt on the property and may return extra cash.

HELOC: a revolving line of credit secured by the property, usually priced on an index plus a margin.

Draw period: the early stretch when the line can be borrowed against, often with interest-only payments.

Amortizing payment: a payment that includes principal as well as interest, so the balance shrinks from the first installment.

Payoff statement: the lender’s figure for what it takes to retire a lien on a given date, which includes accrued interest and fees.

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

Why Does the Payment Structure Change Before the Amount Does?

A HELOC and a new fixed first lien behave differently. The line floats and can sit at interest-only. The new loan is fixed and amortizing. That difference shows up in the first statement, before you compare any totals.

Start with the old stack. You likely have a first mortgage payment and a separate HELOC payment. The HELOC payment can move even if you borrow nothing more, because the line is priced off an index. If you are still in the draw period, it may be interest-only, so none of it reduces the balance.

Now look at the new stack. One lien replaces both. The balance is bigger because it must absorb the first mortgage payoff, the HELOC payoff, closing costs, and any cash you take. The payment includes principal, so part of the new number is debt reduction the old HELOC payment never included.

Five inputs decide where the new payment lands:

The old first mortgage matters most. A cash-out reprices the entire first balance, not only the HELOC portion. A HELOC adds its own pricing only to the amount you borrowed. An investor holding a low legacy first mortgage often pays more on the whole stack after the swap. An investor whose first mortgage was priced close to current terms often sees little difference there.

How Underwriting Treats the Swap, Step by Step

Underwriting treats the swap as one new first lien that must clear the property’s coverage test, with every old lien paid and released at closing. The steps below follow the order a file usually moves.

Step 1: Inventory the liens. The title search and payoff requests list every recorded lien. A HELOC is a recorded lien even at a zero balance.

Step 2: Pay off the HELOC. When the old first mortgage is released, the HELOC would move into first position, and a new first-lien lender will not accept that. The CFPB explains in its guidance on whether a HELOC affects refinancing a first mortgage that you may need your HELOC lender’s approval, that the lender can refuse, and that you may then need to pay off the HELOC. A cash-out built to replace both liens takes the payoff route.

Step 3: Order payoff statements. A payoff figure is not the drawn balance. It includes interest through the closing date plus any fees. The closing agent pays both old liens from the new loan’s proceeds.

Step 4: Close the line, not just zero it. A HELOC at a zero balance can still be drawn again. The closing instructions should include a written closure request. Confirm afterward that the lien release was recorded.

Step 5: Test the new payment. DSCR is monthly rent divided by PITIA. Once the HELOC is gone, its payment drops out of the test. The new, larger first-lien payment is the only one measured. A ratio above 1.00 means rent covers that payment, nothing more.

Step 6: Size the net cash. Cash to you is the new loan minus both payoffs and closing costs. A large HELOC payoff can leave little cash. Lendmire’s piece How Much a Cash-Out Refinance Frees When It Pays Off a HELOC walks through that sizing.

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.

A Worked Comparison in Percentages and Ratios

Two modeled scenarios show why the answer flips. Every input below is a modeled assumption, not market data. Both assume a standard long-term rental on a cash-out refinance.

Scenario A. The investor’s first mortgage was cheap, and the HELOC payment was only interest. The new loan is about 27% larger than the old first mortgage alone, it reprices the whole balance, and it adds principal. The payment rises and coverage falls. The new number still clears 1.00, which is where many select programs start, but the margin is thin.

If it had landed under 1.00, a separate select-lender path takes coverage below 1.00 with leverage and terms adjusted. The question to ask first is whether you want that structure or a smaller payoff.

Scenario B. The first mortgage was priced near today’s terms, and the HELOC had entered repayment with a heavy amortizing payment. A new 30-year schedule spreads that principal out. The combined payment falls and coverage improves.

The same swap produces opposite results. That is why no single percentage describes it.

What Structures and Variations Exist?

Most files in this swap use a 30-year fixed structure, and the network offers more than that. The wholesale network Lendmire works with, a group of DSCR lenders, includes these options.

• Term. The 30-year fixed is the spine. Select lenders add 40-year terms and interest-only periods, and ARM structures exist for investors who want them. Above $2,500,000 the network generally holds to 30-year fixed.
• Loan size. Standard sizes reach up to $3,000,000 on standard programs, with smaller balances available through select lenders.
• Leverage. A cash-out on a standard rental tops out around 75% LTV across most of the network, with about 6 months of seasoning as the common expectation. A short-term rental cash-out is lower, at 70% LTV, with about 12 months of hosting history expected.
• Coverage. A 1.00 floor is where select programs start. Stronger ratios open better pricing and leverage.
• Credit. A 620 floor exists in parts of the network. Most programs want around 660, and 700 or better unlocks the strongest tiers.
• Reserves. They vary by lender, leverage, loan size, and transaction type. About 6 months of PITIA is common, and loans above $1,500,000 typically step up to around 9 months.

Payoff size interacts with the leverage cap. If both liens plus costs exceed the cap, the swap does not fit as designed. A larger payment can also be offset by a longer term, but a longer term restarts the interest clock. Eligibility depends on the lender, the borrower, and the property.

Where the General Rule Breaks

The rule that a swap simply consolidates two payments into one fails in several named cases.

A HELOC secured by a different property. Refinancing the rental does not release a line secured by your residence. You choose whether to pay it from the new proceeds. Doing so moves repayment risk onto the residence.

A HELOC already in repayment. The CFPB’s HELOC brochure notes that variable pricing can change payments without any new borrowing. A line that reached its amortizing phase may cost more per month than the interest-only payment you remember. The payment change from the swap is then smaller, or it reverses, as Scenario B shows.

Balloon structures. The same brochure’s comparison table also lists a cash-out as a replacement that leaves one payment but may take longer to pay off and carry a higher new interest cost. A line that paid little or no principal can demand the full balance when the plan ends. An amortizing replacement removes that risk.

Never-drawn or zero-balance lines. They still must be closed or subordinated.

Cash-out labeling. Whether paying off a HELOC counts as cash-out depends on how the line was used and on each lender’s treatment. Some agency programs give limited cash-out treatment to certain seconds. DSCR lenders set their own rules, so do not assume that carries over. Lendmire’s explainer, Is a Refinance a Cash-Out When It Pays Off an Existing HELOC?, covers the question in more detail.

Vesting. A personally held HELOC and an LLC-held rental can conflict at title. DSCR loans can close in a LLC’s name, subject to lender program eligibility. HELOC lines generally need the individual borrower or a revocable trust to hold title. Sort out the vesting question before you plan the payoff.

Personal debt in the payoff. Business-purpose rules can restrict using proceeds for personal debt, and treatment is program-specific. Ask before you assume a personal-use HELOC balance can be refinanced into the loan.

Clearing 1.00 is not positive cash flow. DSCR compares rent to PITIA only. Vacancy, repairs, management, utilities, and capex sit outside it. A ratio near 1.00 leaves little room for an extended vacancy or a large repair.

Ineligible property types. Manufactured homes, log homes, and barndominiums are not offered in the network’s DSCR programs, so no HELOC payoff changes that.

Payment Now Versus Payment Later

Predictability is the real tradeoff. A HELOC can look cheaper now, but its payment depends on an index that moves. If the line sits at interest-only, the payment also steps up when repayment begins. A fixed jumbo gives up that flexibility in exchange for a number that does not change.

The comparison depends on how long you plan to carry the debt. If you need the money for a short stretch, the line may cost less and the swap may not be worth its closing costs. If the horizon is long or unknown, fixed pricing removes one source of risk. Closing costs on a cash-out resemble purchase closing costs, so weigh them against the HELOC’s own fees.

Should You Swap, or Keep the First Mortgage?

For investors with a cheap first mortgage and a modest HELOC balance, keeping the first and handling the line another way often wins. For investors with a first mortgage near current pricing and a large or amortizing HELOC, the swap often pencils well.

Alternatives exist. You can pay the HELOC down from savings. You can ask the HELOC lender to subordinate. You can also pursue a new equity line after refinancing. On this network, investment-property equity lines run 70% CLTV and cap at $500,000 total. They are offered only in Lendmire’s 16 full-service states, a narrower reach than its 41-market DSCR footprint.

A larger down payment or smaller payoff lowers the payment and can lift coverage. It never erases 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.

For the broader picture of how these loans work, see Lendmire’s complete DSCR loans guide.

Next Steps

If you are weighing a jumbo cash-out against keeping your first mortgage and handling a HELOC another way, and want to see how the numbers work, Lendmire can help. As a DSCR-focused mortgage broker, it arranges investor loans through select lenders. Lendmire can compare options based on the property, the equity available, your credit profile, combined leverage, and your goals. Every file is reviewed individually, subject to lender guidelines, and none of this is a commitment to lend.

For the mechanics of pulling equity out of a rental property, see Lendmire’s guide to cash-out refinance on an investment property.

About Lendmire

As a mortgage broker (NMLS# 2371349), Lendmire helps homeowners and real estate investors in its 16 full-service states open home equity lines of credit arranged through wholesale lenders. 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.

References

1. CFPB – Does a HELOC affect my ability to refinance my first mortgage loan?

2. CFPB – What You Should Know About HELOCs (brochure)