Home equity calculator
Your available HELOC credit depends on your home value, remaining mortgage balance, and the maximum combined loan-to-value ratio your lender allows. Enter your numbers below to get an illustrative estimate of how much credit you might access.
Home equity: $150,000
Current LTV: 62.5%
Estimated available HELOC credit: $90,000
Illustrative estimate only — lenders set their own CLTV limits and underwriting criteria. Not an offer to lend.
How it's calculated
This tool estimates your borrowing power two ways. First, your raw equity is your home value minus your mortgage balance. Second, lenders cap total borrowing using a combined loan-to-value (CLTV) limit — often around 80–90%. So your potential HELOC is roughly home value times the CLTV cap, minus your mortgage balance. Enter your home value, mortgage balance, and a CLTV limit to see an illustrative range.
Frequently asked questions
How much can I borrow with a HELOC?
A common estimate is your home value times the lender's CLTV cap, minus your mortgage balance. At a 90% cap, a $400,000 home with a $250,000 mortgage gives roughly $110,000 of borrowing power. Actual limits depend on credit, income, and each lender's rules.
What is CLTV and why does it matter?
Combined loan-to-value is your mortgage balance plus your HELOC, divided by your home value. Lenders use it to cap total borrowing, frequently near 80–90%. The lower your CLTV, the more room you may have to borrow and often the better the terms you can qualify for.