Commbank Personal Loan Calculator Repayments

let repaymentSteps = “”; const currencySymbol = “$”, fixedCurrency = “AUD”; function calculateRepayment(){ repaymentSteps=””; const loanAmount = parseFloat(document.getElementById(“loanAmount”).value); const loanTerm = parseFloat(document.getElementById(“loanTerm”).value); const interestRate = parseFloat(document.getElementById(“interestRate”).value) / 100; if (isNaN(loanAmount) || isNaN(loanTerm) || isNaN(interestRate) || loanAmount <= 0 || loanTerm <= 0 || interestRate <= 0) { alert("Please enter valid positive values for all fields."); return; } const monthlyInterestRate = interestRate / 12; const numberOfPayments = loanTerm * 12; const monthlyRepayment = loanAmount * monthlyInterestRate / (1 – Math.pow(1 + monthlyInterestRate, -numberOfPayments)); document.getElementById("monthlyRepayment").value = formatCurrency(monthlyRepayment); repaymentSteps += `Inputs:
Loan Amount: ${formatCurrency(loanAmount)}
Loan Term: ${loanTerm} years
Interest Rate: ${(interestRate * 100).toFixed(2)}%

`; repaymentSteps += `Formulas:
Monthly Repayment = Loan Amount × Monthly Interest Rate / (1 – (1 + Monthly Interest Rate) ^ -Number of Payments)

`; repaymentSteps += `Result:
Estimated Monthly Repayment: ${formatCurrency(monthlyRepayment)}
`; if (document.getElementById(“calculationStepsRepayment”).style.display === “block”) { document.getElementById(“calculationStepsRepayment”).innerHTML = repaymentSteps; } } function resetCalculator(){ document.querySelectorAll(“#calculator input”).forEach(el => el.value = “”); repaymentSteps = “”; document.getElementById(“calculationStepsRepayment”).innerHTML = “

Not calculated yet.

“; } function toggleRepaymentSteps(){ const steps = document.getElementById(“calculationStepsRepayment”); const arrow = document.getElementById(“toggleArrowRepayment”); if (steps.style.display === “none” || steps.style.display === “”) { steps.style.display = “block”; arrow.style.transform = “rotate(180deg)”; steps.innerHTML = repaymentSteps || “

Not calculated yet.

“; } else { steps.style.display = “none”; arrow.style.transform = “rotate(0deg)”; } } function formatCurrency(n) { return currencySymbol + n.toFixed(2) + ” ” + fixedCurrency; }