Home Loan Amortization Calculator India

let amortizationSteps = “”; const currencySymbol = “₹”, fixedCurrency = “INR”; function calculateAmortization(){ amortizationSteps=””; const loanAmount = parseFloat(document.getElementById(“loanAmount”).value); const interestRate = parseFloat(document.getElementById(“interestRate”).value) / 100 / 12; const loanTerm = parseInt(document.getElementById(“loanTerm”).value) * 12; if(isNaN(loanAmount) || isNaN(interestRate) || isNaN(loanTerm) || loanAmount <= 0 || interestRate <= 0 || loanTerm <= 0){ alert("Please enter valid positive values for all fields."); return; } const monthlyPayment = (loanAmount * interestRate) / (1 – Math.pow(1 + interestRate, -loanTerm)); const totalPayment = monthlyPayment * loanTerm; const totalInterest = totalPayment – loanAmount; document.getElementById("monthlyPayment").value = formatCurrency(monthlyPayment); document.getElementById("totalInterest").value = formatCurrency(totalInterest); document.getElementById("totalPayment").value = formatCurrency(totalPayment); amortizationSteps += `Inputs:
Loan Amount: ${formatCurrency(loanAmount)}
Interest Rate: ${interestRate * 12 * 100}%
Loan Term: ${loanTerm / 12} years

`; amortizationSteps += `Formulas:
Monthly Payment = Loan Amount × Interest Rate / (1 – (1 + Interest Rate)^-Loan Term)
Total Payment = Monthly Payment × Loan Term
Total Interest = Total Payment – Loan Amount

`; amortizationSteps += `Results:
Monthly Payment: ${formatCurrency(monthlyPayment)}
Total Interest: ${formatCurrency(totalInterest)}
Total Payment: ${formatCurrency(totalPayment)}
`; if(document.getElementById(“calculationStepsAmortization”).style.display===”block”){ document.getElementById(“calculationStepsAmortization”).innerHTML = amortizationSteps; } } function resetAmortization(){ document.querySelectorAll(“#calculator input”).forEach(el => el.value = “”); amortizationSteps = “”; document.getElementById(“calculationStepsAmortization”).innerHTML = “

Not calculated yet.

“; } function toggleAmortizationSteps(){ const s = document.getElementById(“calculationStepsAmortization”); const a = document.getElementById(“toggleArrowAmortization”); if(s.style.display === “none” || s.style.display === “”){ s.style.display = “block”; a.style.transform = “rotate(180deg)”; s.innerHTML = amortizationSteps || “

Not calculated yet.

“; } else { s.style.display = “none”; a.style.transform = “rot