What Is a HELOC and How Does It Actually Work?

A Home Equity Line of Credit sounds complicated. But once you strip away the jargon, it’s actually one of the more straightforward financial products out there — and one of the most misunderstood.

It’s a Line of Credit, Not a Loan
This is the distinction most people miss. When you take out a mortgage or a personal loan, you receive a lump sum and immediately start paying interest on the full amount. A HELOC works differently. Think of it like a credit card — but secured by your home and with a much lower interest rate. You’re approved for a maximum amount, and you draw from it only as needed. You only pay interest on what you’ve actually used. So if you’re approved for a $100,000 HELOC but you’ve only drawn $20,000, you’re only paying interest on $20,000.

How the Draw Period and Repayment Period Work

Most HELOCs have two phases:

• The draw period typically lasts 10 years. During this time you can borrow, repay, and borrow again — similar to how a credit card works. Many lenders require interest-only payments during this phase, though you can always pay more.
• The repayment period follows the draw period and typically lasts another 10 to 20 years. During this phase the line closes and you repay whatever balance remains, usually with fully amortized payments of principal and interest.

What Determines Your HELOC Rate?

Unlike a fixed-rate mortgage, HELOCs have variable interest rates. Your rate is typically calculated as:
SOFR + your lender’s margin = your rate SOFR (Secured Overnight Financing Rate) is a benchmark rate that fluctuates based on broader economic conditions. Your lender adds a fixed margin on top of that — usually somewhere between 1% and 3% depending on your credit profile and the lender.

This means your HELOC rate can change month to month. When SOFR goes up, your rate goes up. When it drops, your rate drops with it.

How Much Can You Borrow? Lenders typically allow you to borrow up to 85% of your home’s appraised value, minus what you still owe on your mortgage. Here’s a simple example:

• Home value: $600,000
• 85% of value: $510,000
• Mortgage balance: $400,000
• Maximum HELOC: $110,000

Your actual limit will depend on your credit score, income, and the lender’s specific guidelines.

What People Get Wrong About HELOCs
The most common misconception is that a HELOC is a last resort — something you only use when you’re in financial trouble. In reality, homeowners with strong equity and stable cash flow use HELOCs strategically to manage their finances more efficiently, pay down their primary mortgage faster, and avoid high-interest debt.

Used thoughtlessly, a HELOC can create problems. Used deliberately, it’s one of the most flexible financial tools available to a homeowner.

If you want to see how a HELOC could work specifically for your situation, reach out and we’ll run the numbers together.