Ppf Interest Rate in India Calculator

let ppfSteps = “”; function calculatePPF() { ppfSteps = “”; const principal = parseFloat(document.getElementById(“principal”).value); const years = parseInt(document.getElementById(“years”).value); const interestRate = parseFloat(document.getElementById(“interestRate”).value) / 100; const compoundingFrequency = parseInt(document.getElementById(“compoundingFrequency”).value); if (isNaN(principal) || isNaN(years) || isNaN(interestRate) || isNaN(compoundingFrequency) || principal <= 0 || years <= 0 || interestRate <= 0 || compoundingFrequency <= 0) { alert("Please enter valid positive values for all fields."); return; } const totalAmount = principal * Math.pow(1 + interestRate / compoundingFrequency, years * compoundingFrequency); const interestEarned = totalAmount – principal; document.getElementById("totalAmount").value = totalAmount.toFixed(2); document.getElementById("interestEarned").value = interestEarned.toFixed(2); ppfSteps += `Inputs:
Principal: ₹${principal.toFixed(2)}
Years: ${years}
Interest Rate: ${(interestRate * 100).toFixed(1)}%
Compounding Frequency: ${compoundingFrequency} year(s)

`; ppfSteps += `Formulas:
Total Amount = Principal × (1 + (Interest Rate / Compounding Frequency)) ^ (Years × Compounding Frequency)
Total Interest = Total Amount – Principal

`; ppfSteps += `Results:
Total Amount at Maturity: ₹${totalAmount.toFixed(2)}
Interest Earned: ₹${interestEarned.toFixed(2)}
`; if (document.getElementById(“calculationStepsPPF”).style.display === “block”) { document.getElementById(“calculationStepsPPF”).innerHTML = ppfSteps; } } function resetPPF() { document.querySelectorAll(“#ppf-calculator-form input”).forEach(el => el.value = “”); ppfSteps = “”; document.getElementById(“calculationStepsPPF”).innerHTML = “

Not calculated yet.

“; } function togglePPFSteps() { const steps = document.getElementById(“calculationStepsPPF”); const arrow = document.getElementById(“toggleArrowPPF”); if (steps.style.display === “none” || steps.style.display === “”) { steps.style.display = “block”; arrow.style.transform = “rotate(180deg)”; steps.innerHTML = ppfSteps || “

Not calculated yet.

“; } else { steps.style.display = “none”; arrow.style.transform = “rotate(0deg)”; } }