A home equity line of credit (HELOC) lets you borrow against the equity you have built up in your home, using the property as collateral. It typically works as a revolving credit line: you draw funds as needed during a set period, then repay what you borrowed, often with a variable interest rate tied to a benchmark index. Some homeowners also use a home equity loan, which delivers a lump sum on a fixed schedule and rate, for the same purpose. Because the home secures the debt, lenders generally price these products more favorably than unsecured borrowing, but the trade-off is that missed payments put the property at risk.

What separates a workable HELOC from a frustrating one is the structure of the draw and repayment phases, and how transparent the lender is about the costs that surface later. The headline variable rate is less important than the index, margin, and any rate caps that govern how high the payment can climb. Conversion terms for moving from the draw period to repayment, closing costs, and whether the line can be frozen or reduced at the lender's discretion are equally material.

When comparing options, weigh the loan-to-value ratio the lender will allow, the length of the draw and repayment windows, fees at origination and on closure, and whether rate limits apply during the life of the line.