What Is a HELOC? Home Equity Lines of Credit Explained

A home equity line of credit (HELOC) is a revolving credit line secured by your home — allowing you to borrow against the equity you've built (the difference between your home's current value and your remaining mortgage balance). If your home is worth $500,000 and you owe $300,000, you have $200,000 in equity. Most lenders allow you to borrow up to 80-85% of your equity through a HELOC, providing a flexible source of relatively low-cost funds.

How a HELOC Works

A HELOC has two phases. The draw period (typically 5-10 years) allows you to borrow, repay, and re-borrow up to your credit limit — similar to a credit card but at much lower interest rates and with your home as collateral. During the draw period, you may only need to pay interest on the borrowed amount. The repayment period (typically 10-20 years) follows, during which you can no longer borrow and must repay both principal and interest.

HELOC interest rates are typically variable — tied to the prime rate plus a margin. When the prime rate rises, your HELOC rate rises; when it falls, your rate falls. Current HELOC rates are typically 8-10%, significantly lower than credit card rates (18-25%) but higher than primary mortgage rates (6-7%). Some lenders offer fixed-rate conversion options for portions of your HELOC balance.

When HELOCs Make Sense

Home improvements that increase your property value are the most defensible HELOC use — you're borrowing against equity to create more equity. Debt consolidation (replacing high-interest credit card debt with lower-interest HELOC debt) can save thousands in interest costs, though it requires the discipline to not run up the cards again.

Emergency access to liquidity is another appropriate use. Having a HELOC in place (even if unused) provides a financial safety valve for unexpected major expenses — medical bills, job loss, urgent home repairs — without needing to sell investments at potentially unfavorable times.

When HELOCs Are Dangerous

Using a HELOC to fund lifestyle spending (vacations, cars, consumer goods) puts your home at risk for depreciating purchases. If you can't repay the HELOC, the lender can foreclose on your home — you're betting your house on your ability to make payments on the borrowed amount.

Using a HELOC to invest in stocks (leveraged investing through home equity) is extremely risky. If the investments decline and you can't repay the HELOC, you face losses on the investments plus the potential loss of your home. The history of investors borrowing against their homes to invest is overwhelmingly negative — the additional leverage amplifies losses during the downturns that test every investor's resolve.

HELOCs and Quality Investing

For quality investors, a HELOC is a liquidity tool — not an investment tool. Having a HELOC available provides the financial flexibility to avoid selling quality investments during temporary cash crunches. If you need $20,000 for an emergency, drawing on a HELOC at 9% for six months costs roughly $900 in interest — far less than the potential cost of selling a quality stock at a depressed price and missing the subsequent recovery.

But never borrow against your home to invest in stocks. Quality investing is built on patience and conviction — neither of which are served by the anxiety of knowing that poor stock performance could jeopardize your home. Keep your investment capital and your home equity on separate sides of a firewall.