Interest Rate Spread Calculation

.equity-calc-wrapper { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; max-width: 800px; margin: 20px auto; padding: 25px; border: 1px solid #e0e0e0; border-radius: 12px; background-color: #ffffff; box-shadow: 0 4px 12px rgba(0,0,0,0.05); } .equity-calc-header { text-align: center; margin-bottom: 30px; } .equity-calc-header h2 { color: #1a2b49; margin-bottom: 10px; } .equity-calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 25px; } @media (max-width: 600px) { .equity-calc-grid { grid-template-columns: 1fr; } } .equity-input-group { display: flex; flex-direction: column; } .equity-input-group label { font-size: 14px; font-weight: 600; margin-bottom: 8px; color: #4a5568; } .equity-input-group input { padding: 12px; border: 2px solid #edf2f7; border-radius: 6px; font-size: 16px; transition: border-color 0.2s; } .equity-input-group input:focus { outline: none; border-color: #3182ce; } .equity-calc-btn { grid-column: 1 / -1; background-color: #3182ce; color: white; padding: 15px; border: none; border-radius: 6px; font-size: 18px; font-weight: 700; cursor: pointer; transition: background-color 0.2s; } .equity-calc-btn:hover { background-color: #2b6cb0; } .equity-results { margin-top: 30px; padding: 20px; background-color: #f7fafc; border-radius: 8px; display: none; } .equity-result-item { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid #e2e8f0; } .equity-result-item:last-child { border-bottom: none; } .equity-result-label { font-weight: 500; color: #4a5568; } .equity-result-value { font-weight: 700; color: #2d3748; font-size: 18px; } .equity-highlight { color: #2f855a !important; } .equity-article { margin-top: 40px; line-height: 1.6; color: #333; } .equity-article h3 { color: #1a2b49; margin-top: 25px; }

Home Equity Loan Calculator

Estimate how much you can borrow against your home's value.

Total Home Equity: $0
Maximum Borrowing Limit: $0
Available Loan Amount: $0
Estimated Monthly Payment: $0

How a Home Equity Loan Works

A home equity loan, often referred to as a "second mortgage," allows you to borrow a lump sum of money using the equity in your home as collateral. Equity is the difference between what your home is worth and what you still owe on your primary mortgage.

The 80% Rule (LTV Ratio)

Most lenders use a Loan-to-Value (LTV) ratio to determine your borrowing capacity. Typically, lenders allow you to borrow up to 80% or 85% of your home's appraised value, inclusive of your current mortgage balance.

Example Calculation:

  • Home Value: $500,000
  • LTV Limit (80%): $400,000
  • Current Mortgage: $300,000
  • Maximum Loan: $100,000

Home Equity Loan vs. HELOC

While a home equity loan provides a one-time lump sum with a fixed interest rate, a Home Equity Line of Credit (HELOC) works more like a credit card with a variable rate. Use this calculator specifically for fixed-term loans to understand your fixed monthly commitment.

Key Requirements for Approval

Beyond equity, lenders will evaluate your credit score (typically 620+ required), your Debt-to-Income (DTI) ratio, and verify your income. Ensure your DTI remains below 43% for the best chance of approval at competitive rates.

function calculateHomeEquity() { var homeValue = parseFloat(document.getElementById("homeValue").value); var balance = parseFloat(document.getElementById("mortgageBalance").value); var ltvLimit = parseFloat(document.getElementById("ltvLimit").value); var interestRate = parseFloat(document.getElementById("interestRate").value); var termYears = parseFloat(document.getElementById("loanTerm").value); if (isNaN(homeValue) || isNaN(balance) || isNaN(ltvLimit) || homeValue <= 0) { alert("Please enter valid numeric values for Home Value, Balance, and LTV."); return; } // 1. Calculate Total Equity var totalEquity = homeValue – balance; // 2. Calculate Maximum Borrowing Limit based on LTV var maxBorrowingLimit = (homeValue * (ltvLimit / 100)); // 3. Calculate Available Loan Amount var availableLoan = maxBorrowingLimit – balance; if (availableLoan 0 && interestRate > 0 && termYears > 0) { var r = (interestRate / 100) / 12; var n = termYears * 12; monthlyPayment = availableLoan * (r * Math.pow(1 + r, n)) / (Math.pow(1 + r, n) – 1); } // Display results document.getElementById("equityResults").style.display = "block"; document.getElementById("resTotalEquity").innerText = formatCurrency(totalEquity); document.getElementById("resMaxBorrow").innerText = formatCurrency(maxBorrowingLimit); document.getElementById("resAvailableLoan").innerText = formatCurrency(availableLoan); document.getElementById("resMonthlyPayment").innerText = formatCurrency(monthlyPayment); } function formatCurrency(num) { return "$" + num.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); }

Leave a Comment