You’re familiar with the HELOC (home equity line of credit): a way to use your home as collateral to access cash, almost like a credit card. But have you come across a first-lien HELOC?

While they have been around for about 20 years, they’re less common and less well-known. But that’s changing. “On the supply side, more lenders are entering the marketplace and offering this product than I was aware of even a few years ago,” says Anthony Rushing, sales manager for the first-lien HELOC department at First Merchant’s Bank, a Midwest-based bank that offers first-lien HELOCs. “On the consumer side, I think what’s really driving demand is awareness. This product has existed for years, but it was largely unknown to the average American homeowner. More homeowners are discovering that their mortgage doesn’t have to be a passive, set-it-and-forget-it obligation.”  

A first-lien HELOC essentially merges a regular first mortgage with a credit line, becoming your primary loan for the property. Also known as an open-end mortgage or a first-position HELOC, it can not only be a source of funds, but also a cash-management tool and even a way to prepay your mortgage.

How does a first-lien HELOC work?

A first-lien HELOC works similarly to a traditional HELOC: You borrow, using your home to back the debt. But unlike a conventional HELOC, which is a debt separate from your mortgage, a first-lien HELOC replaces your mortgage, becoming the primary loan on your property. Here’s how the process typically works: 

Access your available credit line

After approval, you can borrow against your available equity as needed. Some first-lien HELOCs have specific draw periods, like their second-lien counterparts. 

“There can also be minimum draw requirements on subsequent draws throughout the life of the line, meaning each time you access funds, you may be required to pull a minimum amount,” says Rushing. 

Other first-lien HELOCs— also known as “all-in-one mortgages” — allow you to continuously tap the equity in your home throughout the entire 30-year term.  

Link your checking account

When you get paid, a “sweep” feature automatically applies your check to your HELOC balance. Here’s how it works in practice: your paycheck deposits into your checking account. As your income comes in each month, you pay your bills as needed. Whatever money you don’t use stays in the account. 

“Unless you direct the account to pay a specific amount each month, excess funds remain applied against the balance, which can reduce interest costs over time,” says Rushing. “While borrowers can choose how much income to deposit into the account, the strategy works best when most or all household cash flow is directed through it because interest is usually calculated on the average daily balance, so keeping deposits in the account longer can help reduce interest charges and accelerate payoff.” 

Manage deposits and withdrawals 

You don’t have the usual fixed payment of principal and interest each month, as you do with a traditional mortgage. In fact, you don’t pay interest at a fixed rate at all. Instead, as is typical with home equity lines of credit, you pay at a variable rate.  

“When you think about a one-month cycle, all the money goes in, paying down your balance,” says Rushing. “Then you pull money from the HELOC to pay your bills, increasing your balance.  And then whatever’s leftover, whatever you didn’t pull out from that income, is still sitting in the HELOC. That’s your principal paydown for that month.” 

Because of the automated sweep structure, the checking side of the account may periodically display a zero or temporary negative balance. The transaction is not treated as a traditional overdraft. The system records your spending and then automatically transfers money from your HELOC to cover it and bring the account back to zero. 

Mortgages vs. first-lien HELOCs

First-lien HELOC benefits

So, who benefits from a first-lien HELOC? These home equity products are designed with specific homeowners in mind.

Access to a cash flow management tool 

A first-lien HELOC can also be a good option if you like having a financial hub through which all your income and expenses move. Instead of having your money sit idle in a checking account, income can be directed into the first-lien HELOC. With that income, you have access to funds you can use to lower your outstanding balance.  

“What’s worth appreciating is how many separate financial vehicles this single structure replaces,” says Rushing. “Most households juggle a checking account, savings account, mortgage, emergency fund, and separate investment or debt paydown accounts. A first-lien HELOC consolidates all of that into one.”  

A faster mortgage payoff strategy 

The financial hub and the loan payment working together can also function as a mortgage prepayment strategy. 

“The most significant benefit is the ability to use your income to continuously reduce your principal balance in real time, rather than waiting on a fixed monthly payment to do the work,” says Rushing. “That points to something that often surprises people when they first understand it. The open-ended nature of a first-lien HELOC means you can actually leverage all of your income to pay down your balance. With a traditional mortgage, parking everything you have against your principal isn’t a realistic strategy, because once that money is applied, you lose access to it.” 

Ability to access more of your equity 

If you’ve got significant equity in your home, a first-lien HELOC allows you to access a larger pool of funds than a regular HELOC would. Because the loan is in the first mortgage position, lenders may be willing to allow higher credit limits than with a traditional second-lien HELOC. 

“Many first-lien HELOCs cap at 89.9% LTV (loan-to-value), so compared to second-lien HELOCs that cap at 80% or 85% LTV, these allow for greater equity access,” says Rushing. “But the more important distinction isn’t the starting point. It’s what happens over time. As borrowers pay down their balance, the available credit increases by the same amount. Every dollar they put toward the principal doesn’t just reduce what they owe; it expands what they can access because the limit on their first-lien HELOC remains the same.” 

First-lien HELOC drawbacks

While a first-lien HELOC offers many advantages, it’s not suitable for everyone. 

Financial discipline is crucial  

A first-lien HELOC gives homeowners access to what is most people’s largest single asset. 

“That’s not something to take lightly,” says Rushing. “The danger is behavioral. When equity is locked up in a traditional mortgage, it’s untouchable. That lack of liquidity acts as a forced savings mechanism. You can’t spend it on impulse. With a first-lien HELOC, that guardrail is gone. Someone who lacks financial discipline could draw heavily against their line for lifestyle spending, car purchases, vacations and find themselves approaching their credit limit with little equity buffer remaining.” 

Some first-lien HELOCs, if you just make interest-only payments, you won’t reduce your principal balance, and you might face a balloon payment near the end of the loan term.

Limited availability/larger draw 

First-lien HELOCs aren’t as widely available as their traditional second-lien HELOC cousins. And when they are available, the borrowing terms can be steeper, like a larger minimum draw.

“This can range anywhere from a set dollar amount to a percentage of the credit line, and it essentially means you’re required to take out a portion of the available funds when you open the account rather than starting with a zero balance,” says Rushing.  

Potentially higher rates than mortgages 

While first-lien HELOC rates are lower than the more common second-lien cousins, they are more expensive than primary mortgages and cash-out refis. Generally, interest rates are about a point higher than you would get with your primary mortgage.

“Individual banks set the structure of the loan,” says Rushing. “Generally speaking, these products tend to have somewhat higher rates because of the flexibility and access they provide. The difference can vary depending on the lender and market conditions.”

Also, first-lien HELOCs typically carry variable rates, which means your cost of borrowing moves with market conditions. 

“That’s something borrowers need to plan for rather than be surprised by.”  

Risk of foreclosure 

While every HELOC uses your home as collateral, missing payments with this type can put you at deeper risk of foreclosure — because, as the name says, it’s in line to be paid first.

“The access to equity is a feature for the disciplined; it’s a liability for the undisciplined,” says Rushing. “This is why borrowers should work with people who specialize in the first-lien HELOC product and strategy, so they can be paired with someone who can help them determine whether it’ll be a great option or an unsafe one.”orrowers meet with a financial advisor or a first-lien HELOC specialist before finalizing the loan.

Is a first-lien HELOC right for you? 

For homeowners with strong financial discipline, a first lien HELOC can give you greater flexibility than a standard mortgage. The financial tool can give access to funds when you need them while potentially helping you reduce interest costs and pay down debt more strategically. 

“A first-lien HELOC makes a lot of sense in this rate environment and honestly, in almost any rate environment when you understand what it’s actually doing for you,” says Rushing. “Most people are sitting on significant home equity that’s completely idle. It’s not working.”

First-lien HELOC requirements

To qualify for a first-lien HELOC, you’ll need to have some pretty strong financials — at least on a par with other equity-tapping tools, like cash-out refinances and traditional HELOCs. Here’s what to expect in the application process: 

• Strong credit and manageable debt: While it varies depending on the lender, generally, you’ll need a FICO credit score of at least 680, though a score of 700 or above is preferred. Lenders also require a debt-to-income ratio of generally 43% and below.
• Stable income and ample reserves: Lenders want to see that borrowers are financially prepared to make the payments and to handle any interest rate fluctuations. 
• Minimal equity requirements: This is the one area where traditional HELOCs are more stringent than their first-lien counterparts. While lenders typically want you to have at least 20% equity with a second-lien HELOC, with first-liens, you only need a 10% stake. Some lenders also let you access up to 90% of your home’s equity.  
• Home appraisal and property review: Unlike with a traditional HELOC, most lenders may need to verify your home’s value with a full appraisal or an automated valuation model (AVM).
• Final underwriting and approval: Once the lender evaluates your credit, debt, equity position and other particulars, their underwriting team will make a final decision on your application. 

Who’s best suited for a first-lien HELOC?

A first-lien HELOC can open up your options for using your home’s equity. Unlike a traditional HELOC, which is separate from and secondary to your primary mortgage, a first-lien HELOC takes the top spot: a vehicle for both tapping your home’s wealth and for paying down, even prepaying, your home loan.

First-lien HELOCs are designed for borrowers who want to reduce their principal payment faster and pay less interest over time. They typically go to well-qualified borrowers. But it’s about more than just meeting the requirements. You’ll also need to be good with your budget and finances since you’re linking a significant credit line to your home — and putting it seriously at risk if you get careless with payments.

But if you have a solid plan, a first-lien HELOC can be beneficial. Just make sure you understand how it all works before jumping in.

Frequently asked questions

• What’s the difference between a first- and second-lien HELOC?
  

  A first-lien HELOC replaces a mortgage. A second-lien HELOC exists in addition to a mortgage.

  As their names imply, the main difference lies in their priority in the event of default. As the primary loan tied to your home, the first-lien HELOC is in the number-one position to be paid back. If you fall behind on payments, you could face foreclosure by the HELOC lender, and its claim would take priority over any other home-secured debt. In contrast, with a second-lien HELOC, the lender is in the runner-up position: It would get paid after the primary mortgage in the event things go south with the borrower.

   

• Is a first-lien HELOC tax-deductible?
  

  Yes, since the first lien HELOC replaces your primary mortgage, the interest it charges would be tax-deductible, the same way as your interest on a traditional mortgage would. In most cases, interest is also deductible if you use the funds to substantially improve your property. You must itemize your deductions on your tax return.

• Can I sell my home if I have a first-lien HELOC?
  

  Yes, you can sell your home if there’s a first-lien HELOC on it, as you would if you had a mortgage. However, you have to settle the loan at closing. Typically, you’d pay off the outstanding balance from the sale proceeds and the lien will be removed from the property.