.fd-calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
max-width: 700px;
margin: 20px auto;
padding: 25px;
border: 1px solid #e0e0e0;
border-radius: 10px;
background-color: #fdfdfd;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}
.fd-calculator-container h2 {
text-align: center;
color: #2c3e50;
margin-bottom: 25px;
font-size: 28px;
font-weight: 600;
}
.fd-calculator-container .input-group {
margin-bottom: 18px;
display: flex;
flex-direction: column;
}
.fd-calculator-container .input-group label {
margin-bottom: 8px;
color: #34495e;
font-size: 16px;
font-weight: 500;
}
.fd-calculator-container .input-group input[type="number"],
.fd-calculator-container .input-group select {
width: 100%;
padding: 12px 15px;
border: 1px solid #ccc;
border-radius: 6px;
font-size: 16px;
color: #333;
box-sizing: border-box;
transition: border-color 0.3s ease;
}
.fd-calculator-container .input-group input[type="number"]:focus,
.fd-calculator-container .input-group select:focus {
border-color: #007bff;
outline: none;
box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}
.fd-calculator-container button {
display: block;
width: 100%;
padding: 14px 20px;
background-color: #28a745;
color: white;
border: none;
border-radius: 6px;
font-size: 18px;
font-weight: 600;
cursor: pointer;
transition: background-color 0.3s ease, transform 0.2s ease;
margin-top: 25px;
}
.fd-calculator-container button:hover {
background-color: #218838;
transform: translateY(-2px);
}
.fd-calculator-container .result-section {
margin-top: 30px;
padding: 20px;
background-color: #e9f7ef;
border: 1px solid #d4edda;
border-radius: 8px;
text-align: center;
font-size: 18px;
color: #155724;
}
.fd-calculator-container .result-section p {
margin: 8px 0;
line-height: 1.6;
}
.fd-calculator-container .result-section strong {
color: #0a3622;
font-size: 20px;
}
.fd-calculator-container .error-message {
color: #dc3545;
margin-top: 15px;
text-align: center;
font-weight: 500;
}
.fd-calculator-container .article-content {
margin-top: 40px;
padding-top: 30px;
border-top: 1px solid #eee;
color: #333;
line-height: 1.7;
}
.fd-calculator-container .article-content h3 {
color: #2c3e50;
font-size: 24px;
margin-bottom: 15px;
font-weight: 600;
}
.fd-calculator-container .article-content p {
margin-bottom: 15px;
font-size: 16px;
}
.fd-calculator-container .article-content ul {
list-style-type: disc;
margin-left: 20px;
margin-bottom: 15px;
}
.fd-calculator-container .article-content ul li {
margin-bottom: 8px;
font-size: 16px;
}
Understanding Fixed Deposits (FDs)
A Fixed Deposit (FD) is a popular investment option offered by banks and financial institutions that allows you to deposit a lump sum of money for a fixed period at a predetermined interest rate. It's considered a low-risk investment, making it a preferred choice for individuals seeking stable returns and capital preservation.
How Does an FD Work?
When you open an FD, you commit a certain amount of money for a specific tenure, ranging from a few days to several years. During this period, your deposit earns interest, which can be compounded at various frequencies (annually, semi-annually, quarterly, or monthly). At the end of the tenure, you receive the principal amount back along with the accumulated interest, known as the maturity amount.
Key Features and Benefits:
- Guaranteed Returns: The interest rate is fixed at the time of investment, ensuring predictable returns regardless of market fluctuations.
- Safety: FDs are generally considered very safe, especially with reputable banks, and are often insured up to a certain limit.
- Flexible Tenures: You can choose a tenure that suits your financial goals, from short-term to long-term.
- Compounding Benefit: Interest earned is added back to the principal, allowing you to earn interest on your interest, leading to higher returns over time.
- Liquidity (with conditions): While designed for fixed terms, most FDs allow premature withdrawal, though it may incur a penalty and a lower interest rate.
Using the FD Calculator
Our Fixed Deposit Calculator helps you estimate the maturity amount and the total interest you will earn on your investment. Simply input the following details:
- Principal Investment: The initial amount you plan to deposit.
- Annual Interest Rate (%): The yearly interest rate offered by the bank.
- Tenure (Years): The duration for which you plan to keep your money invested.
- Compounding Frequency: How often the interest is calculated and added to your principal (e.g., Annually, Semi-annually, Quarterly, Monthly).
The calculator will then provide you with the estimated maturity amount and the total interest earned, helping you make informed investment decisions.
Example Calculation:
Let's say you invest ₹1,00,000 at an annual interest rate of 7.0% for 5 years, with interest compounded annually:
- Principal (P) = ₹1,00,000
- Annual Rate (r) = 7.0% = 0.07
- Tenure (t) = 5 years
- Compounding Frequency (n) = 1 (Annually)
Using the compound interest formula: A = P * (1 + r/n)^(nt)
A = 100,000 * (1 + 0.07/1)^(1*5)
A = 100,000 * (1.07)^5
A ≈ 100,000 * 1.40255
A ≈ ₹140,255.17
Total Interest Earned = A – P = ₹140,255.17 – ₹100,000 = ₹40,255.17
This calculator simplifies this process for you, providing quick and accurate estimates.
function calculateFD() {
var principalAmount = parseFloat(document.getElementById('principalAmount').value);
var annualInterestRate = parseFloat(document.getElementById('annualInterestRate').value);
var tenureYears = parseFloat(document.getElementById('tenureYears').value);
var compoundingFrequency = document.getElementById('compoundingFrequency').value;
var fdResultDiv = document.getElementById('fdResult');
var fdErrorDiv = document.getElementById('fdError');
fdResultDiv.style.display = 'none';
fdErrorDiv.style.display = 'none';
fdErrorDiv.innerHTML = ";
if (isNaN(principalAmount) || principalAmount <= 0) {
fdErrorDiv.innerHTML = 'Please enter a valid Principal Investment (a positive number).';
fdErrorDiv.style.display = 'block';
return;
}
if (isNaN(annualInterestRate) || annualInterestRate <= 0) {
fdErrorDiv.innerHTML = 'Please enter a valid Annual Interest Rate (a positive number).';
fdErrorDiv.style.display = 'block';
return;
}
if (isNaN(tenureYears) || tenureYears <= 0) {
fdErrorDiv.innerHTML = 'Please enter a valid Tenure in Years (a positive number).';
fdErrorDiv.style.display = 'block';
return;
}
var r = annualInterestRate / 100; // Convert percentage to decimal
var n; // Number of times interest is compounded per year
switch (compoundingFrequency) {
case 'Annually':
n = 1;
break;
case 'Semi-annually':
n = 2;
break;
case 'Quarterly':
n = 4;
break;
case 'Monthly':
n = 12;
break;
default:
n = 1; // Default to annually
}
// Compound Interest Formula: A = P * (1 + r/n)^(nt)
var maturityAmount = principalAmount * Math.pow((1 + r / n), (n * tenureYears));
var totalInterest = maturityAmount – principalAmount;
document.getElementById('maturityAmount').innerText = '₹' + maturityAmount.toLocaleString('en-IN', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById('totalInterest').innerText = '₹' + totalInterest.toLocaleString('en-IN', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
fdResultDiv.style.display = 'block';
}