Home Equity
What Is a HELOC and How Does It Work?
How a home equity line of credit works: draw period, repayment period, variable rates, combined loan to value limits and what a HELOC costs to keep open.
Updated 2026-08-21| Applies to: Homeowners with equity who want access to funds without touching an existing first mortgage.
The short answer
A HELOC is a revolving line of credit secured by your home. A lender approves a credit limit based on your equity, credit and income. During the draw period you can borrow, repay and borrow again, usually with interest only payments on the balance you have actually used. When the draw period ends, the line converts to a repayment period with principal and interest payments. Most HELOCs carry a variable rate tied to an index, so the payment can change.
A HELOC sits behind your first mortgage as a second lien. It works more like a credit card secured by real estate than like a traditional mortgage: you are approved for a limit, and you only owe interest on what you draw.
How the two phases work
| Phase | What happens | Typical payment |
|---|---|---|
| Draw period | You can borrow up to the limit, repay, and borrow again | Interest only on the balance used on many programs |
| Repayment period | Draws stop and the balance amortizes | Principal and interest, so the payment steps up |
How the credit limit is set
Lenders start with the value of the home, apply a maximum combined loan to value, then subtract the first mortgage balance. If a program allows 85% CLTV on a home valued at $300,000 with a $180,000 first mortgage, the math is $255,000 minus $180,000, or roughly $75,000 of potential line, subject to credit, income and program limits.
What a HELOC costs
- Interest only on the drawn balance, calculated on the average daily balance on most programs
- Closing costs that are often lower than a first mortgage refinance, and sometimes waived or credited
- Possible annual fee or early closure fee if the line is paid off and closed within a set window
- Rate risk, because a variable rate can rise during the life of the line
Who it fits
- Homeowners with a low rate first mortgage they do not want to disturb
- Renovations funded in stages rather than one lump sum
- Buyers pulling a down payment for a next home
- Households that want a standby reserve they may never draw
Where a HELOC is a poor fit
- Borrowing to cover a structural budget shortfall rather than a one time need
- Consolidating debt without changing the spending that created it
- Any use where a variable payment would break the monthly budget
General education, not a commitment to lend. HELOC availability, credit line limits, rates and closing timelines vary by lender, program, property type and current guidelines. Manny Oloyede | Mortgage Broker | NMLS 1824463 | Ultimate Mortgage Brokers LLC.
Common mistakes to avoid
- Assuming the interest only draw payment is what you will pay forever
- Drawing the full line at closing and treating it like a fixed loan
- Ignoring the combined loan to value ceiling when estimating available funds
- Closing the line early and triggering a reimbursement of waived closing costs
Related loan programs
Frequently Asked Questions
People also ask
How is home equity calculated?
Home equity is your home's current market value minus your remaining mortgage balance and any other liens against the property.
Read: How to Build Home Equity FasterCan I have both?
In some cases yes, if combined loan to value, credit and income still support it, but most homeowners are better served picking one.
Read: HELOC vs Home Equity Loan: Which Fits Your Situation?Which one closes faster?
A HELOC is often faster because valuation and documentation requirements can be lighter, but timing depends on the specific program, title and property.
Read: HELOC vs Cash Out Refinance: How to DecideWhat CLTV do most HELOCs allow?
Program maximums commonly fall in the 80% to 90% range on a primary residence, with lower ceilings for other occupancy types. Limits vary by lender and change over time.
Read: How Much Can I Borrow With a HELOC?Can I get a HELOC right after buying?
Sometimes, but seasoning requirements and limited equity in the first year make it uncommon unless you made a large down payment.
Read: How Much Equity Do I Need for a HELOC?Can I pay more than the interest only payment?
Yes, and paying principal during the draw period restores available credit and reduces interest immediately.
Read: How Is a HELOC Payment Calculated?Terms used in this guide
- HELOC
- A Home Equity Line of Credit is a revolving credit line secured by your home. You draw what you need during a draw period and repay it, similar to a credit card secured by the property.
- Equity
- The difference between what your home is worth and what you still owe on loans secured by it.
- Combined Loan to Value (CLTV)
- All loans secured by a property, added together, divided by the property's value.
- Draw Period
- The phase of a home equity line when you can borrow, repay and borrow again, often with interest only payments.
- Variable Rate
- An interest rate that moves with an index, plus a fixed margin set by the lender.
Written by
Manny Oloyede, Mortgage Broker
NMLS #1824463 | Ultimate Mortgage Brokers LLC NMLS #2619461 | Licensed in OH | KY | NC | PA | SC | TN | TX
I have worked in mortgage lending since 2018 out of the Akron / Cuyahoga Falls Branch, helping buyers, homeowners and investors across Northeast Ohio and every state where I am licensed. These guides reflect the questions I answer most often, written the way I would explain them on a call.
Keep reading
HELOC vs Cash Out Refinance: How to Decide
Compare a second lien HELOC with a cash out refinance: what happens to your first mortgage rate, total interest, closing costs, payment structure and timing.
Home EquityHELOC vs Home Equity Loan: Which Fits Your Situation?
A HELOC is a revolving line with a variable rate. A home equity loan is a fixed lump sum. Compare payments, flexibility, rate risk and the situations each one fits.
Home EquityHow Much Can I Borrow With a HELOC?
How lenders size a home equity line: combined loan to value ceilings, the equity math, credit and income limits, and how to estimate your line before applying.
Home EquityHow Is a HELOC Payment Calculated?
How interest only draw payments, average daily balance interest, variable rate changes and the repayment period step up combine to set your HELOC payment.
Questions about your own numbers?
Send over your goal, income type and timeline and you'll get a straight answer on what is realistic.