Sitting on real equity in your current home is one of the most common reasons buyers ask about their next purchase. The math looks clean on paper. Pull $80,000 or $120,000 out of the house you already own, walk it into closing on the next one, and skip the years of saving most buyers face. Whether that math actually works for you depends on three things almost no online calculator catches: how the new lender treats the equity loan on your debt-to-income ratio, which loan program you are using for the next purchase, and what happens if your current home does not sell on the timeline you assumed. Used right, your existing equity can shave years off your move-up timeline or quietly fund a second home. Used wrong, it stretches you across two mortgages with one income picture that no longer fits either of them.
How Does Using Home Equity for a Down Payment Actually Work?
The basic mechanic is straightforward. You pull cash out of your current home using one of three tools, wire that cash into closing on the new home, and the new lender treats it the same way they would treat money from your savings account. The catch is that the lender does see the new loan against your old home, and that loan goes straight into your debt picture for the next purchase.
There are three real options. A home equity line of credit (HELOC) gives you a revolving credit line secured by your current home, usually with a variable interest rate and an interest-only draw period of about ten years. A home equity loan is a fixed-rate, lump-sum second mortgage with a set payment for the life of the loan. A cash-out refinance replaces your existing first mortgage entirely with a new, larger loan and gives you the difference in cash. Each of these creates a real monthly payment on the old house starting before you ever close on the new one.
That payment is the part most buyers miss. When you apply for the mortgage on the next home, the underwriter pulls a new credit report, sees the HELOC or home equity loan you just opened, and adds that minimum monthly payment to your debt-to-income ratio. A $100,000 HELOC at 8.5 percent during the draw period adds roughly $710 per month in interest-only minimum payments to your DTI. If you are buying an investment property or a second home, you also need to show reserves on top of that, usually two to six months of payments on both houses.
The lender also wants to see where the down payment money came from. Sourced and seasoned cash from a HELOC or home equity loan is acceptable on most loan programs as long as the second lien is properly disclosed on the new loan application. What you cannot do is hide it. Underwriters cross-reference the title search against your application and run a soft re-pull right before closing, so a HELOC opened after the initial credit pull is one of the most common reasons a clean pre-approval suddenly falls apart in the final stretch.
When Does Tapping Equity Actually Make Sense for the Next Purchase?
There are five buyer profiles where pulling equity from the current home pencils out cleanly. The common thread across all of them is that the income picture comfortably supports the new payment plus the equity loan, the current home is going to either sell or generate rent within a reasonable window, and the buyer is using a loan program that allows the equity-funded down payment.
Move-Up Buyer Keeping the Current Home as a Rental
This is the most common scenario in 2026. You bought your first home at a 3.5 or 4 percent rate three or four years ago, you have built real equity, and you want to upgrade without giving up that low first-mortgage rate. Pulling a HELOC against the old home lets you keep that 3.5 percent first mortgage in place, convert the house to a rental, and use the HELOC draw as the down payment on the new primary residence. Most lenders will count 75 percent of the projected rental income against the carrying costs of the old house once a signed lease is in place, which often makes the DTI math work even with two mortgages on the report.
Buyer Closing the Gap to 20 Percent Down
If you have saved 10 percent of the purchase price but you want to hit 20 percent down to skip private mortgage insurance on the new loan, the equity from your current home can cover the gap. On a $500,000 purchase, the difference between 10 percent and 20 percent down is $50,000. If PMI on the 10 percent loan would run roughly $200 per month and you can pull that $50,000 from a HELOC at an interest-only payment near $354 per month, the equity loan is more expensive on a flat monthly basis but eliminates a non-deductible PMI cost and gives you an interest payment you can pay off aggressively after the old home sells.
Buy-Before-Sell in a Tight Inventory Market
In a market where the home you want will not wait 60 days for your current home to close, equity can bridge the gap. You draw on a HELOC, close on the new home, move in, list and sell the old home, and use the sale proceeds to pay off the HELOC in full. The risk is real and worth naming. If your current home sits on the market longer than expected, or sells for less than you projected, you are stuck carrying two full mortgages plus the HELOC interest. Run the worst-case math at four to six months of carrying both homes before committing.
Second-Home or Vacation-Property Purchase
Second-home loans typically require 10 to 20 percent down depending on the lender and credit profile. If your primary home has the equity and your income comfortably covers both mortgages plus the equity loan payment, this is a workable path. Note that second-home programs require the property to be at least 50 miles from your primary residence, available for your personal use rather than full-time renting, and held in your name (not an LLC). The mortgage interest on the new loan is potentially deductible, and the interest on the equity loan is deductible only if the equity funds were used to buy, build, or substantially improve the second home itself.
Strong Income, Conservative DTI Cushion
If your back-end DTI before the new purchase is in the 25 to 30 percent range, you have real room to absorb a HELOC payment plus a second mortgage without crossing the 43 to 50 percent program ceilings. Buyers with two strong incomes, low consumer debt, and meaningful reserves are usually the ones who can run this play comfortably. If your DTI is already in the high 30s before pulling equity, this strategy gets dangerous fast.
When Does This Plan Quietly Fall Apart?
The same strategy that gets a move-up buyer into a better house can leave a different buyer financially overextended. There are four failure modes that come up repeatedly when buyers try to fund a down payment from existing equity, and the patterns are predictable enough that a loan officer who has seen them can usually spot the risk in the first conversation.
The first is a tight debt-to-income ratio that cannot absorb the extra payment. If your back-end DTI is already in the upper 30s, adding a HELOC interest payment plus a full new mortgage payment can push you past the 45 percent conventional cap or the 43 percent FHA cap. The pre-approval letter you got based on the new house in isolation will not survive once the equity loan hits the credit report. Before you draw on equity, run the new DTI calculation with all three payments (old mortgage, HELOC, new mortgage) and verify it lands inside your target program’s ceiling. This is the same kind of stress test that determines what your income can actually support in a comfortable monthly budget, not just what the underwriting algorithm will approve.
The second is variable-rate stress. HELOC rates are tied to the prime rate and adjust whenever the Federal Reserve moves. A HELOC drawn at 8.5 percent today could be at 10 or 10.5 percent within a year if the Fed reverses course. On a $100,000 balance, that is roughly $167 per month more in interest. If your budget is tight at the starting rate, do not assume the rate stays put for the life of the draw period.
The third is career and income risk. Two mortgages plus an equity loan against one household income is fine until that income changes. A layoff, an industry contraction, a medical event, or a self-employment dip all become much harder to absorb when you are carrying both houses. The honest question is not whether you can cover both payments today, but whether you can cover both payments through six months of a worst-case income disruption with the reserves you actually have liquid.
The fourth is using this strategy for an investment property when the rules do not support it. Investment-property loans generally require 15 to 25 percent down on the new purchase, and most conventional investor programs will not accept a HELOC or home equity loan from another property as the source of those down-payment funds. The lender wants the down payment to come from your own seasoned savings, gifts from immediate family, or proceeds from the sale of another asset. Cash-out refinance proceeds are sometimes accepted on investment purchases, but only if the cash-out closed and seasoned at least 60 to 90 days before the new application.
Which Equity Tool Fits Best for a Down Payment?
The three equity tools all get you to the same place, which is a check for the next closing, but the cost shape, the rate behavior, and the impact on your existing first mortgage are very different. The right tool depends on how long you expect to carry the equity loan, what your current first-mortgage rate is, and how much certainty you want around the payment.
HELOC: Best for Short-Term Bridging
A HELOC works best when the equity loan is going to be repaid quickly, usually within 12 to 24 months. The interest-only draw period gives you a low minimum payment, you only pay interest on what you actually draw, and you can repay and redraw flexibly. If your plan is to sell the current home within a year, a HELOC is almost always the cheapest path. The downside is the variable rate. If your timeline stretches and rates rise, the math gets worse fast. Closing costs are typically $0 to $500 on a HELOC, so the entry cost is low even if you ultimately do not use the full line.
Home Equity Loan: Best for Multi-Year Carry
A home equity loan locks in a fixed rate and a fixed payment for the life of the loan, usually 10 to 20 years. This is the right tool if you plan to keep the current home as a rental and the equity loan is going to ride alongside the first mortgage for the long haul. The fixed payment is easier to budget around, you are insulated from Fed rate moves, and the principal pays down on a schedule rather than ballooning at the end of a draw period. Closing costs run roughly 2 to 5 percent of the loan amount, so a $100,000 home equity loan typically costs $2,000 to $5,000 to originate.
Cash-Out Refi: Best When Your First-Mortgage Rate Is Above Market
A cash-out refinance replaces your entire first mortgage with a new, larger loan. This only makes sense if your current first-mortgage rate is at or above current market rates. If you are sitting on a 3.5 or 4 percent first mortgage, blowing that up to access equity at a 6.75 to 7.25 percent cash-out rate is almost always a mistake. The deeper trade-offs between a cash-out refinance and a HELOC deserve a careful side-by-side on your specific numbers, but the quick rule of thumb is that cash-out refi makes sense if your first-mortgage rate is within 0.5 percent of today’s refinance rate, and almost never otherwise.
A simple comparison for a buyer with a $300,000 home, a $150,000 first mortgage at 4 percent, and a $75,000 cash need for a new down payment: the HELOC option keeps the 4 percent first in place and adds roughly $530 per month in interest-only payments at 8.5 percent. The home equity loan adds about $640 per month at a fixed 8.0 percent over 15 years. The cash-out refi at 7.0 percent on $225,000 of new debt creates a $1,497 per month total payment, replacing the $716 payment on the original 4 percent first, a net $781 per month increase. The HELOC wins on monthly cost, the home equity loan wins on rate certainty, and the cash-out refi loses badly here because the first-mortgage rate gap punishes the trade.
What Should You Line Up Before Pulling From Your Current Home?
Before you call the bank about a HELOC or sign anything on a home equity loan, four things should be sorted out so the second-home pre-approval does not collapse in underwriting. These are the same items a good loan officer will walk through with you in the first 30 minutes of the conversation, and missing any of them is the most common reason an equity-funded purchase falls apart after offer acceptance.
- Get a current appraisal estimate on your existing home. Lenders will let you borrow up to 80 to 85 percent of the appraised value minus the existing mortgage balance. If your house is worth $500,000 and you owe $200,000, the maximum equity available at 85 percent loan-to-value is $225,000. Knowing the real ceiling before you shop the next home prevents falling in love with a $700,000 house when your equity actually supports a $550,000 purchase.
- Run the combined DTI calculation with all three payments included. Add your current first-mortgage payment, the projected HELOC or home equity loan payment, and the new mortgage payment together. Divide by your gross monthly income. If the result is over 43 percent, you are at the FHA ceiling. Over 45 to 50 percent, you are at most conventional ceilings and starting to test what a manual underwriter will accept.
- Apply for the equity loan and the new mortgage in the same window. Underwriters re-pull credit shortly before closing, and a HELOC opened after the initial pre-approval pull is one of the most common credit-event red flags. Telling both lenders about both loans up front gets it disclosed cleanly and keeps the new mortgage from imploding in the final week.
- Confirm the loan program allows equity-sourced down payments. Conventional and FHA primary residence loans almost always accept HELOC and home equity loan proceeds as the down payment source. Investment-property loans usually do not. Jumbo programs vary. The first conversation with a loan officer should include the program you are targeting and a confirmation that equity funds are an allowed source on that specific product.
If the DTI math is tight or the program rules block the equity-funded path, it is worth running the alternative scenarios before assuming this is the only way. Zero-down-payment loan options like VA and USDA can change the math entirely if either applies to your situation, and the right program may make the equity-pull unnecessary.
The cleaner the pre-approval picture is at the start, the fewer surprises show up in underwriting. That is the entire point of a full borrower review before you write an offer on the next home, especially when an equity loan and a new mortgage are both about to hit the credit report in the same 30-day window.
Frequently Asked Questions About Using Home Equity as a Down Payment
Can I use a HELOC for the down payment on my next home?
Yes, most conventional and FHA loan programs allow HELOC proceeds to be used as the down payment on a new primary residence or second home, as long as the HELOC is properly disclosed on the new loan application and the combined debt-to-income ratio still fits inside the program’s ceiling. Investment-property purchases are the main exception. Most investor programs require down-payment funds to come from seasoned savings, gifts, or sale proceeds rather than a HELOC.
How much equity can I actually pull out of my current home?
Most lenders let you borrow up to 80 to 85 percent of the appraised value of your home, minus the balance you still owe on the first mortgage. On a $400,000 home with a $200,000 first mortgage, that means roughly $120,000 to $140,000 of available equity. Loan-to-value caps tighten for jumbo balances, second homes, and investment properties, and they relax slightly for borrowers with stronger credit profiles and longer tenure in the home.
Will the new mortgage lender count the HELOC payment against me?
Yes. The new lender pulls a fresh credit report during underwriting, sees the HELOC or home equity loan on the report, and adds the minimum monthly payment to your debt-to-income calculation. Even if your HELOC has a zero balance at the moment of underwriting, some lenders use a hypothetical payment based on the full credit line as a stress test. The payment shows up in your DTI whether you are using the funds yet or not.
Is the interest on the equity loan tax deductible?
Under current federal tax law, interest on a HELOC or home equity loan is deductible only if the borrowed funds are used to buy, build, or substantially improve the home that secures the loan, and only if you itemize deductions. If you pull equity from your primary home to fund a down payment on a second home, the IRS treats the interest as personal interest, not mortgage interest, which is generally not deductible. Talk to a tax professional about your specific situation before assuming deductibility, since the rules are stricter than most buyers expect.
What happens if my current home does not sell as quickly as planned?
If you used a HELOC to buy before selling and the current home sits on the market longer than expected, you are responsible for carrying both first mortgages plus the HELOC interest until the sale closes. This is the biggest risk of the buy-before-sell strategy. Before committing, run the worst-case math at four to six months of carrying both homes and confirm your reserves can cover that timeline without distress.
Can I use a home equity loan to buy an investment property?
Most conventional investor programs do not accept HELOC or home equity loan proceeds as the source of the down payment on an investment property. The lender wants those funds to come from seasoned savings, the sale of another asset, or a gift from an immediate family member. A seasoned cash-out refinance, where the funds closed and sat in your account for 60 to 90 days before the new application, is sometimes accepted, but program rules vary widely between lenders. Confirm the specific program rules with your loan officer before drawing on equity for this purpose.
Should I take out the full HELOC even if I do not need all of it?
It can make sense to apply for a larger line than you currently need, since the variable-rate cost of an unused HELOC is typically just an annual fee in the $50 to $100 range. Drawing only what you need keeps interest costs down, and an open line of credit gives you a reserve cushion if the new home needs unexpected repairs, your current home does not sell on schedule, or your income picture changes during the move-up window. The trade-off is that some new-mortgage lenders use the full credit line, not just the drawn balance, in DTI calculations during underwriting, so check with your loan officer before sizing the line.
