What Is a HELOC and How Does It Work?

By EquityBankLoan Editorial Team

Research assistance: Chris, EquityBankLoan AI Research Agent

Reviewed by Michael Yanda

Last reviewed: August 22, 2026

A home equity line of credit lets you borrow against the value of your home, repeatedly, up to a limit a lender sets. It is not a lump sum and it is not a credit card. It is a revolving credit line with your house as security, which is what makes it cheaper than unsecured borrowing and considerably more serious.

This page explains how one works, what the two phases mean for your payments, and what to weigh before applying.

What a HELOC actually is

The Consumer Financial Protection Bureau describes a HELOC as:

An “open-end” line of credit that allows you to borrow repeatedly against your home equity.

Consumer Financial Protection Bureau, What is a home equity line of credit (HELOC)?

“Open-end” is the important word. You are approved for a limit rather than an amount. You draw what you need, when you need it, and as the CFPB notes, when you make payments the available credit is replenished, in the same way a credit card works. You pay interest on what you have actually drawn, not on the whole limit.

The difference from a credit card is the collateral. Your home secures the debt. That is why the rate is usually lower, and it is also why the consequences of not paying are different in kind, not merely in degree.

How borrowing against your equity works

Your equity is what the property is worth minus what you still owe on it. If your home is worth $500,000 and your mortgage balance is $300,000, you have $200,000 of equity.

Lenders do not let you borrow all of it. They work to a combined loan-to-value ratio, or CLTV: the total of everything secured against the property, divided by the property value. If a lender will go to 85% CLTV on a $500,000 home, the total of your first mortgage and your new line cannot exceed $425,000. With a $300,000 mortgage, that leaves $125,000.

The word “combined” matters. The limit applies to your total secured borrowing, not to the new line by itself, so a larger existing mortgage means a smaller line even when the equity looks substantial.

You can work through the math for your own numbers with the home equity calculator on our homepage. It shows your equity, your current loan-to-value, and what different CLTV limits would allow. It is arithmetic only, and it cannot tell you what any lender will actually offer.

A HELOC usually sits behind your first mortgage

Most HELOCs are a second lien. Your existing first mortgage stays exactly as it is, with its rate, its balance and its term untouched, and the line of credit sits behind it in priority.

Second position means that if the property were sold or foreclosed, the first mortgage is repaid before the second lender sees anything. That additional risk is generally reflected in pricing, which is why a HELOC rate is usually higher than a first mortgage rate.

For a homeowner holding a first mortgage at a rate below what is currently available, the second-lien structure is the practical point: you can borrow without disturbing that rate.

The two phases: draw period and repayment period

This is the part that surprises people, and it is worth understanding before you sign anything.

During the draw period, you can take money out up to your limit. The CFPB notes that many HELOCs have minimum monthly payments based on the current balance, and on some plans those payments cover interest only or little more.

When the draw period ends, you enter the repayment period. You can no longer draw, and you now have to repay the outstanding balance. The CFPB puts the consequence bluntly:

Monthly payments are often significantly higher once you enter repayment.

Consumer Financial Protection Bureau, What is a home equity line of credit (HELOC)?

The CFPB describes a draw period of around ten years, with repayment over ten or twenty years, though the actual lengths are set by the lender and by your agreement rather than by a rule. Check the numbers in your own documents rather than assuming.

If you draw heavily and pay only the minimum for a decade, the transition can multiply your payment. Working out what the repayment-period payment would be, at a realistic balance, is the single most useful thing you can do before taking a line.

Variable rates

The CFPB states that HELOCs “usually have a variable interest rate, so your payments may change from month to month”.

Variable normally means the rate is tied to a published index, commonly the Prime Rate, plus or minus a margin the lender sets. When the index moves, your rate moves, and so does your payment. Some agreements include a floor and a cap, and some lenders offer a way to fix the rate on part of a balance.

The practical question is not whether a variable rate is bad. It is whether you could still afford the payment if the rate rose meaningfully while you still owed the money.

What lenders look at

Qualification varies by lender, and published detail is thin. Broadly, lenders assess:

  • How much equity you have, expressed as the CLTV they will lend to
  • Your credit history and score
  • Your income, employment and debt-to-income ratio
  • The property itself, including its type, its condition and whether you live in it
  • Whether the property is in a state where the lender operates

Some lenders publish specific thresholds, such as a minimum credit score. Many publish nothing and describe wanting a “strong” credit profile without saying what that means. On our lender pages we record what each lender states and mark the rest as not published, rather than filling the gap with a typical figure.

HELOC or home equity loan

Both are secured against your home. The difference is structural. The CFPB puts it this way:

With a home equity loan, you receive the money you are borrowing in a lump sum payment … with a Home Equity Line of Credit (HELOC), you can borrow or draw money multiple times from an available maximum amount.

Consumer Financial Protection Bureau, What is the difference between a Home Equity Loan and a Home Equity Line of Credit?

On rates, the CFPB says a home equity loan may carry a fixed or adjustable rate, while HELOCs “usually have adjustable interest rates and the payment will vary depending on the outstanding balance”.

The choice tends to follow the spending. A known one-off cost, such as a specific renovation contract or clearing a fixed debt, fits a lump sum with predictable payments. An open-ended or staged need, such as a project of uncertain cost, fits a line you draw from only as required, since you pay interest only on what you have taken.

There is more on the lump sum option on our home equity loans page.

HELOC or cash-out refinance

A cash-out refinance is a different shape again. Rather than adding a second loan, it replaces your existing mortgage with a new, larger one and pays you the difference.

The result is one loan rather than two, which some people prefer. The trade-off is that the new rate and term apply to the entire balance, not only to the money you are releasing. If your existing mortgage carries a rate below what is available today, a refinance gives that rate up on the whole debt in order to reach the new money.

Whether that is worth it depends on the gap between your current rate and the new one, how much you are borrowing relative to your existing balance, the fees on each route, and how long you expect to owe the money. It is arithmetic rather than principle, and it is worth running before you commit, because a refinance is hard to reverse.

The risks worth taking seriously

Your home secures the debt. The CFPB states it plainly: “If you fall behind or can’t repay the loan on schedule, you could lose your home.” This is the difference between a HELOC and unsecured borrowing, and it is not a formality.

The payment can jump at the end of the draw period. A payment you have managed comfortably for years can change substantially when repayment begins.

The rate can rise. On a variable line, an index move raises your payment on a balance you have already spent.

Available credit is not guaranteed to stay available. Home equity plans can be suspended or reduced in certain circumstances, for example a significant decline in property value. If you are relying on an undrawn line as an emergency reserve, read what your agreement says about this before you depend on it.

Borrowing against equity converts an asset into a debt. Using long-term secured borrowing for short-term consumption is how people end up paying for a holiday over twenty years, secured on their house.

You have three business days to change your mind

If the home securing the line is your principal dwelling, you have a right to cancel. According to the CFPB, you have three business days from the day you open the account or the day you receive the account-opening disclosures, whichever is later, and you may change your mind for any reason. You have to tell the lender in writing, and:

The lender must then return all of the fees, including any fees to third parties, that you paid to open your HELOC.

Consumer Financial Protection Bureau, I wanted to take out a Home Equity Line of Credit but my lender told me the terms have changed. What can I do?

It is a real protection and worth knowing you have it.

Questions to ask before you apply

  • What is the rate today, what index is it tied to, and what is the margin?
  • Is there a floor or a cap, and what is the highest rate this line could reach?
  • Is the advertised rate conditional on anything, such as automatic payments or a minimum initial draw?
  • How long is the draw period, and how long is the repayment period?
  • During the draw period, do minimum payments cover principal, or interest only?
  • What would my payment be in the repayment period if I owed the full limit?
  • What are the fees: application, origination, annual, appraisal, recording, and anything for closing the account early?
  • Is there a charge if I close or repay the line within a certain number of years?
  • Under what circumstances can you freeze or reduce my line?
  • Can I convert part of the balance to a fixed rate, and what does that cost?
  • What valuation method will you use, and do I pay for it?

The question about the repayment-period payment is the one people most often skip, and the one most likely to matter.

Where the figures on this site come from

We record what lenders publish about their own products, with the page we read it on and the date we read it. Where a lender does not publish something, we say so rather than substituting a typical figure. Where we have worked a number out rather than read it directly, we label it as our reading.

You can see how that looks in practice on our lender pages. Those lenders are there because their documentation was detailed enough to test our approach, not because we are recommending them, and their order means nothing.

Sources

CFPB pages checked on August 20, 2026.

This page is general information, not financial advice. It is not an offer of credit and we are not a lender. Borrowing secured against your home puts your home at risk if you cannot keep up repayments. Consider speaking to a qualified adviser about your own circumstances.