HELOC Credit Limit Calculator
Estimate how much you can borrow against your home's equity.
Most lenders allow up to 80% or 85%.
Total Home Value:
$0
Max Allowable Debt (at LTV limit):
$0
Existing Mortgage:
-$0
Estimated HELOC Limit
$0
What is a HELOC and How Does This Calculator Work?
A Home Equity Line of Credit (HELOC) is a revolving line of credit that uses your home as collateral. Unlike a standard home equity loan, which provides a lump sum, a HELOC allows you to borrow as needed, repay, and borrow again during the "draw period."
This calculator determines your borrowing limit based on your Combined Loan-to-Value (CLTV) ratio. Lenders typically limit the total amount of debt secured by your home (your first mortgage + the new HELOC) to a certain percentage of the home's current appraised value.
The HELOC Formula
To calculate your potential credit limit, we use the following formula:
(Home Value × Max LTV %) – Current Mortgage Balance = Available HELOC
Example Calculation
If your home is worth $400,000 and your lender allows an 80% LTV, the maximum total debt allowed on the property is $320,000 ($400,000 × 0.80). If you still owe $250,000 on your primary mortgage, your estimated HELOC limit would be:
- $320,000 (Max Debt) – $250,000 (Current Balance) = $70,000 HELOC limit
Key Factors Lenders Consider
- Credit Score: Higher scores often unlock higher LTV ratios (up to 90%) and lower interest rates.
- Debt-to-Income (DTI) Ratio: Lenders want to ensure you have enough monthly income to cover the new credit line payments alongside existing debts.
- Appraisal: The "Home Value" used in the final calculation will be determined by a professional appraisal or an automated valuation model (AVM).