WEBMay 7, 2024 · For example, if your home is appraised at $400,000 and the remaining balance of your mortgage is $100,000, here’s how you would calculate the potential loan amount: $400,000 x .9 = $360,000. $360,000 – $100,000 = $260,000. This means you could secure up to $260,000 if you obtained a home equity loan.