Yes, you can borrow against your current home's equity to fund a down payment, but lenders view it differently than cash you already have

A home equity line of credit (HELOC) lets you borrow against the value you have built up in your current home. You can draw from it to pay for a down payment on a second property. However, most mortgage lenders will count this borrowed money as debt on your application, not as a down payment asset. That means taking out a HELOC typically lowers the amount you can borrow for the new mortgage, even though you now have more cash in hand.

The timing also matters. If you draw the HELOC funds right before applying for the new mortgage, lenders will see a large cash deposit and may ask where it came from. If you close on the new home before paying back the HELOC, you will carry two mortgages at once, which affects how much the new lender will approve. The math can work, but it requires planning the order of events carefully.

Key Takeaways

  • A HELOC is a revolving credit line secured by your current home's equity, and you can draw from it to pay a down payment on a new property.
  • Most mortgage lenders will count HELOC debt against your debt-to-income ratio, reducing the size of the new mortgage you can obtain even though you have more cash.
  • Lenders will ask about large cash deposits and may require proof that the funds came from a HELOC or other legitimate source.
  • Closing on the new home before paying off the HELOC means carrying two mortgages simultaneously, which some lenders restrict or charge higher rates for.
  • The timing of when you draw the HELOC, when you apply for the new mortgage, and when you close on each property all affect your approval odds and loan terms.

How lenders treat HELOC funds versus other down payment sources

When you apply for a mortgage, the lender calculates your debt-to-income ratio (DTI) by adding up all your monthly debt payments and dividing by your gross monthly income. A HELOC that you have already drawn from counts as a monthly debt payment, even if you have not yet used the full credit line. If you draw $50,000 from a HELOC at a 7% interest rate, that is roughly $292 per month in minimum payments, and the lender will subtract that from the income available to cover your new mortgage payment.

By contrast, if you had saved $50,000 in a bank account, that cash does not appear on your debt report and does not reduce your borrowing power. The lender sees it as an asset, not a liability. This is why using a HELOC for a down payment often results in a smaller new mortgage approval than you might expect, even though you have the cash in hand.

Some lenders will approve a HELOC if you commit to paying it off before or at closing on the new home. In that case, the HELOC debt disappears from your DTI calculation, and you get the full benefit of the down payment without the monthly payment penalty. However, this requires having enough cash flow or home sale proceeds to pay off the HELOC on schedule, and it adds complexity to your closing timeline.

The cash deposit question: why lenders ask where the money came from

When you deposit $50,000 into your bank account a few weeks before applying for a mortgage, the lender will see that deposit and ask for proof of its source. This is part of anti-money-laundering compliance. The lender needs to confirm that the money is legitimate and not borrowed from an undisclosed source.

If you can show a HELOC statement or a bank transfer from your HELOC account, that answers the question. The lender will then factor the HELOC debt into your DTI calculation. If you cannot explain the deposit, the lender may deny the application or ask you to wait 60 days for the funds to "season" in your account, which means the money has to sit there long enough that it looks like it came from your regular income or savings.

To avoid delays, draw your HELOC at least 30 to 60 days before you apply for the new mortgage. This gives you time to deposit the funds and lets the lender see a clear paper trail. Keep statements from both your HELOC and your bank account showing the transfer.

Carrying two mortgages at once: what happens between closing dates

If you close on the new home before you have paid off the HELOC on your current home, you will temporarily owe two mortgages. Some lenders will not approve a new mortgage if you are carrying a HELOC balance above a certain threshold, typically 10% to 20% of your home's value. Others will approve it but charge a higher interest rate to account for the extra risk.

The period between closing on the new home and selling the old one is the riskiest time. You are making two mortgage payments, possibly two property tax payments, and two insurance payments. If your current home does not sell as quickly as you expected, this can strain your cash flow. Some lenders require proof that you have a contract to sell your current home before they will approve the new mortgage.

To minimize this risk, try to time the sale of your current home to close before or on the same day as the purchase of the new home. Your real estate agent and closing attorney can coordinate this. If that is not possible, ask the new lender whether they will allow you to close contingent on the sale of your current home, or whether they require you to pay off the HELOC before closing on the new property.

Interest rates and terms: how HELOC borrowing affects your new mortgage

A HELOC typically carries a variable interest rate tied to the prime rate, which means your monthly payment can change. Most HELOCs have a draw period (usually 5 to 10 years) during which you can borrow and repay freely, followed by a repayment period (usually 10 to 20 years) during which you can no longer draw new funds and must pay down the balance.

If you draw a HELOC to fund a down payment, you will be paying interest on that borrowed money for as long as the HELOC balance remains outstanding. Meanwhile, you will also be paying interest on the new mortgage. The combined cost can be higher than if you had simply saved the down payment in advance. Use a calculator to compare the total interest paid over time if you draw the HELOC versus if you wait and save.

Some borrowers use a HELOC as a bridge: they draw it to make the down payment, close on the new home, then sell the old home and use the proceeds to pay off the HELOC immediately. This works if you are confident the old home will sell quickly and for enough to cover the HELOC balance plus closing costs and real estate commissions.

Alternatives to a HELOC for funding a down payment

If a HELOC reduces your borrowing power too much or if you do not have enough equity in your current home, other options exist. A cash-out refinance on your current mortgage lets you borrow against your home's equity by refinancing the entire mortgage for a larger amount and taking the difference in cash. This is a single loan rather than two separate debts, and some lenders treat it more favorably than a HELOC.

A personal loan from a bank or credit union is unsecured, meaning it is not tied to your home. It will still count as debt on your mortgage application, but it may have a fixed interest rate and a set repayment term, which some borrowers prefer to a HELOC's variable rate. A personal loan typically has a higher interest rate than a HELOC because it is not backed by collateral.

If you have a 401(k) or similar retirement account, you may be able to borrow from it directly. A 401(k) loan does not appear on your credit report and does not count toward your DTI, so it does not reduce your mortgage borrowing power. However, if you leave your job, the loan may become due immediately, and if you cannot repay it, it is treated as an early withdrawal with tax penalties.

Saving the down payment in advance remains the simplest route: it does not create debt, does not reduce your borrowing power, and does not require explaining large deposits to a lender.

Steps to take if you decide to use a HELOC for a down payment

First, check your current home's equity. You can estimate this by subtracting what you owe on your mortgage from the home's current market value. Most lenders will let you borrow up to 80% to 90% of your home's equity, though some go higher. Get a pre-approval for the HELOC before you start house hunting for the new property.

Second, apply for the new mortgage pre-approval before you draw the HELOC. Tell the lender that you plan to use a HELOC for the down payment and ask how much that will reduce your borrowing power. Some lenders will give you a pre-approval contingent on paying off the HELOC by closing; others will not. Knowing this in advance saves time and disappointment.

Third, draw the HELOC funds 30 to 60 days before you submit the mortgage application. Deposit them into your bank account and keep all statements. This gives the funds time to season and creates a clear paper trail for the lender.

Fourth, disclose the HELOC to the new lender on your mortgage application. Do not try to hide it; the lender will find it during the credit check. Transparency speeds up the process and prevents delays or denials later.

Fifth, coordinate closing dates with your real estate agent and attorney. If possible, close on the sale of your current home on the same day as the purchase of the new home, or close the sale first. This minimizes the time you carry two mortgages.

Frequently Asked Questions

Will using a HELOC for a down payment hurt my credit score?

Opening a HELOC will cause a small, temporary dip in your credit score because the lender will do a hard inquiry and open a new account. Drawing from the HELOC will lower your available credit, which can also lower your score slightly. However, if you pay the HELOC on time, your score will recover within a few months. The bigger impact on your mortgage approval is the monthly payment counting against your debt-to-income ratio.

Can I use a HELOC if I have not owned my current home for very long?

Most lenders require you to have owned your home for at least six months to two years before opening a HELOC, and they will base the credit line on the home's appraised value at the time you apply. If you bought recently and the home has not appreciated much, your available equity may be limited. Check with your current lender or a local bank to see what they will offer based on your specific situation.

What if I cannot pay off the HELOC before closing on the new home?

You can still close on the new home with an outstanding HELOC balance, but the lender may approve a smaller mortgage or charge a higher interest rate. Some lenders require a written commitment that you will pay off the HELOC within a certain timeframe, such as 30 or 60 days after closing. Ask the new lender about their policy before you commit to a purchase.

Is it better to use a HELOC or a cash-out refinance for a down payment?

A cash-out refinance replaces your entire current mortgage with a new, larger one and gives you the difference in cash. It results in a single loan instead of two, which some lenders view more favorably. However, you will pay closing costs on the refinance, and your interest rate may be higher than your current rate. A HELOC has lower upfront costs but a variable interest rate. Compare the total cost of each option using your lender's numbers before deciding.

Do I have to tell my current lender that I am using a HELOC for a down payment on another home?

You do not have to volunteer the information, but your current lender will see the new mortgage inquiry when the new lender pulls your credit report. The new lender will definitely ask about it and will require you to disclose the HELOC. It is better to be upfront with both lenders from the start so there are no surprises or delays.