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HELOC Calculator
Estimate how much you could borrow with a Home Equity Line of Credit (HELOC) and your interest-only monthly payment.
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What is a HELOC?
A Home Equity Line of Credit (HELOC) lets homeowners borrow against the equity in their home, up to a lender-set percentage of the home’s value minus any existing mortgage balance.
The Formula
Available Credit = (Home Value × Max Combined Loan-to-Value %) – Remaining Mortgage Balance. During the draw period, many HELOCs charge interest-only payments: Monthly Payment = (Amount Drawn × Interest Rate) ÷ 12.
Note: This is an estimate for general planning purposes only; actual HELOC terms, rates, and limits depend on the lender and your creditworthiness. Not lending advice.
Last reviewed August 2026