How Much Can You Borrow with a HELOC?

Home equity is one thing: how much a lender will let you borrow against it is another. Most HELOCs and home equity loans cap total borrowing at about 80% of your home’s value, including your existing mortgage.

The 80% rule, simply

Take your home’s estimated value and multiply by 80%. That’s the ceiling on allloans secured by the property, first mortgage plus any new line. Whatever’s left after subtracting what you still owe is what you could potentially access with a HELOC.

Why your LTV gatekeeps everything

Lenders express the same idea as loan-to-value (LTV): what you owe divided by what the home is worth. Under about 80% LTV, most owners can tap equity without mortgage insurance getting in the way. Above 90%, there’s often little room to borrow until you pay down the loan or values rise.

HELOC vs. cash-out refinance

A HELOC adds a second lien on top of your existing mortgage. Your first rate stays put. A cash-out refinance replaces the whole loan at today’s rate. If you hold a low fixed rate, the HELOC usually wins for moderate borrowing needs. If your rate is already high, refinancing the full balance might be cleaner.