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HELOC (Home Equity Line of Credit) Calculator

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Maximum Combined Loan Amount: $0.00
Available HELOC Credit Line: $0.00
Estimated Monthly (Interest-Only) Payment: $0.00
Warning: Your planned draw amount exceeds your available credit line.

Understanding Your HELOC Potential

A Home Equity Line of Credit (HELOC) is a flexible borrowing option that uses the equity in your home as collateral. Unlike a standard home equity loan, a HELOC works more like a credit card: you have a limit, and you can borrow against it as needed during the "draw period."

How is a HELOC Calculated?

Lenders typically determine your credit limit based on your Loan-to-Value (LTV) ratio. Most lenders allow a combined loan-to-value (CLTV) of up to 80% or 85% of your home's current market value.

Formula: (Home Value × Max LTV %) – Current Mortgage Balance = Available HELOC

Example HELOC Calculation

If your home is worth $500,000 and your lender allows an 80% CLTV, your total borrowing limit is $400,000. If you still owe $300,000 on your primary mortgage, your maximum HELOC line would be $100,000.

Key Terms to Know

  • Draw Period: The timeframe (often 10 years) when you can withdraw funds and usually pay only interest.
  • Repayment Period: The phase (often 20 years) when you can no longer borrow and must pay back both principal and interest.
  • Variable Interest: Most HELOCs have variable rates tied to the Prime Rate, meaning your payment can change.
  • Appraisal: A professional valuation of your home required by the lender to confirm the current market value.

Is a HELOC Right for You?

HELOCs are ideal for long-term projects with uncertain costs, such as home renovations, or for consolidating high-interest debt. However, because your home is collateral, failing to make payments could result in foreclosure. Always consult with a financial advisor before tapping into your home equity.

function calculateHELOC() { var homeValue = parseFloat(document.getElementById("homeValue").value); var mortgageBalance = parseFloat(document.getElementById("mortgageBalance").value); var ltvLimit = parseFloat(document.getElementById("ltvLimit").value); var helocRate = parseFloat(document.getElementById("helocRate").value); var drawAmount = parseFloat(document.getElementById("drawAmount").value); if (isNaN(homeValue) || isNaN(mortgageBalance) || isNaN(helocRate) || isNaN(drawAmount)) { alert("Please enter valid numeric values in all fields."); return; } // Calculation Logic var maxCombinedAmount = homeValue * (ltvLimit / 100); var availableCredit = maxCombinedAmount – mortgageBalance; if (availableCredit availableCredit) { warningDiv.style.display = "block"; } else { warningDiv.style.display = "none"; } // Show results section document.getElementById("heloc-results").style.display = "block"; }

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