What is a Fixed Deposit (FD) Calculator?
A Fixed Deposit (FD) is a financial instrument offered by banks and NBFCs where you invest a lumpsum amount for a fixed tenure at a pre-agreed interest rate. Unlike savings accounts, an FD locks in the rate for the entire period, protecting you from rate cuts. FDs are one of the safest investments in India – deposits up to ₹5 lakh per bank are insured by DICGC (Deposit Insurance and Credit Guarantee Corporation).
Our FD Calculator helps you instantly calculate your maturity amount, interest earned, and expected returns without manual computation. Whether you're planning to invest ₹10,000 or ₹1 crore, this tool provides accurate calculations based on quarterly compounding, which is the standard method used by Indian banks.
FD Interest Formula Explained
Banks use two primary formulas to calculate fixed deposit interest: simple interest and compound interest. Most modern FDs in India use compound interest with quarterly compounding.
Simple Interest Formula
SI = (P × R × T) / 100
Where P = Principal, R = Rate per annum, T = Time in years. Simple interest earns interest only on the original principal and is rarely used for FDs in India.
Compound Interest Formula (Quarterly Compounding)
A = P × (1 + r/n)^(n×t)
Where A = Final Amount, P = Principal, r = Annual interest rate (as decimal), n = Compounding frequency (4 for quarterly), t = Time in years. This is the standard formula used by banks in India. Quarterly compounding means your interest is calculated and added to your principal every 3 months, and subsequent interest is earned on the combined amount.
Example: For a ₹1 lakh FD at 7% p.a. for 1 year with quarterly compounding: After Q1 (₹1.75K interest), Q2 onwards you earn interest on ₹1,01,750. By maturity, you receive ₹1,07,186 instead of ₹1,07,000 (simple interest).
How to Use This FD Calculator
- Enter Deposit Amount: Use the slider or input field to enter your investment amount. Range: ₹1,000 to ₹10,00,00,000.
- Set Interest Rate: Input the annual interest rate offered by your bank. Typical range: 3% to 15% p.a. Check your bank's current FD rates before entering.
- Choose Tenure: Select investment duration in years (1-20 years). Longer tenures often offer higher rates.
- View Results: The calculator instantly displays:
- Principal amount invested
- Interest earned (with quarterly compounding)
- Total maturity amount
- Year-wise breakdown chart showing principal and accumulated interest
- Compare Rates: Try different rates and tenures to compare returns across banks.
FD Calculation Examples
Example 1: ₹1 Lakh at 7% for 5 Years
Inputs: Principal = ₹1,00,000 | Rate = 7% p.a. | Tenure = 5 years | Compounding = Quarterly
Calculation: A = 100,000 × (1 + 0.07/4)^(4×5) = 100,000 × (1.0175)^20 = ₹1,41,478
Result: Interest Earned = ₹41,478 | Maturity Amount = ₹1,41,478
This demonstrates how ₹1 lakh grows to over ₹1.41 lakh with quarterly compounding over 5 years.
Example 2: ₹5 Lakh at 7.5% for 3 Years
Inputs: Principal = ₹5,00,000 | Rate = 7.5% p.a. | Tenure = 3 years | Compounding = Quarterly
Calculation: A = 500,000 × (1 + 0.075/4)^(4×3) = 500,000 × (1.01875)^12 = ₹6,23,059
Result: Interest Earned = ₹1,23,059 | Maturity Amount = ₹6,23,059
A higher principal and rate combination yields over ₹1.23 lakh in interest, demonstrating the power of compounding.
Example 3: ₹10 Lakh at 6.5% for 1 Year
Inputs: Principal = ₹10,00,000 | Rate = 6.5% p.a. | Tenure = 1 year | Compounding = Quarterly
Calculation: A = 1,000,000 × (1 + 0.065/4)^(4×1) = 1,000,000 × (1.01625)^4 = ₹1,06,681
Result: Interest Earned = ₹66,681 | Maturity Amount = ₹10,66,681
Even with a lower rate and shorter tenure, ₹10 lakh generates substantial interest of over ₹66,000.
FD Returns Comparison Table
Use this table to compare maturity amounts across different principal amounts, interest rates, and tenures:
| Amount / Rate / Tenure | 1 Year | 3 Years | 5 Years |
|---|---|---|---|
| ₹1 Lakh @ 6% | ₹1,06,136 | ₹1,19,405 | ₹1,34,391 |
| ₹1 Lakh @ 6.5% | ₹1,06,681 | ₹1,20,749 | ₹1,36,566 |
| ₹1 Lakh @ 7% | ₹1,07,186 | ₹1,22,079 | ₹1,41,478 |
| ₹1 Lakh @ 7.5% | ₹1,07,690 | ₹1,23,409 | ₹1,44,096 |
| ₹1 Lakh @ 8% | ₹1,08,243 | ₹1,26,677 | ₹1,48,886 |
| ₹5 Lakh @ 7% | ₹5,35,930 | ₹6,10,395 | ₹7,07,390 |
| ₹10 Lakh @ 7% | ₹10,71,860 | ₹12,20,790 | ₹14,14,780 |
| ₹25 Lakh @ 7% | ₹26,79,650 | ₹30,51,975 | ₹35,36,950 |
Note: All calculations assume quarterly compounding. Actual maturity amounts may vary slightly based on exact compounding dates used by banks.
Current FD Interest Rates in India (April 2026)
FD rates in India vary by bank, tenure, and deposit size. Here are approximate rates offered by major banks for regular FDs:
| Bank | 1 Year | 3 Years | 5 Years |
|---|---|---|---|
| SBI | 6.50% | 6.75% | 7.00% |
| HDFC Bank | 6.75% | 7.00% | 7.25% |
| ICICI Bank | 6.75% | 7.00% | 7.25% |
| Axis Bank | 6.50% | 7.00% | 7.15% |
| PNB (Punjab National Bank) | 6.50% | 6.75% | 7.00% |
| Bank of Baroda | 6.50% | 6.75% | 7.00% |
Rates are approximate and subject to change. Senior citizens typically get an additional 0.25% to 0.75% depending on the bank. Always check your bank's official website for current rates before investing.
Types of Fixed Deposits
Indian banks offer various FD types to suit different investor needs:
- Regular FD: Standard deposits with fixed tenure and interest rate. Liquidity penalties apply if broken early.
- Tax-Saving FD (Section 80C): 5-year lock-in period with tax deduction up to ₹1.5 lakh. Ideal for long-term tax planning.
- Senior Citizen FD: Higher interest rates (usually +0.5% to 0.75%) for depositors aged 60+. Some banks allow 7-10 year tenures at premium rates.
- Flexi FD: Withdraw partially without penalty. Combines benefits of savings account and FD, though rates are lower.
- Corporate/Bulk Deposit: For investments above ₹1 crore with higher rates and specialized terms. Typically 1-3 year tenure.
- Cumulative vs Non-Cumulative: Cumulative FDs reinvest interest for maturity payout. Non-cumulative FDs pay interest periodically (monthly/quarterly).
FD vs Other Investments – Comparison
FD vs RD (Recurring Deposit)
FD requires lumpsum investment upfront, while RD allows monthly/quarterly installments. FD offers better returns due to higher compounding on larger amounts, while RD suits those with monthly savings habit. Both offer similar safety and tax treatment.
FD vs SIP (Systematic Investment Plan)
FD provides guaranteed fixed returns independent of market conditions, making it risk-free. SIP invests in mutual funds with market-linked returns that can be higher but more volatile. FD is ideal for conservative investors; SIP suits those with higher risk appetite and long-term horizon (10+ years).
FD vs PPF (Public Provident Fund)
PPF offers tax-free returns with 15-year maturity and Section 80C deduction. FD offers higher rates but interest is fully taxable. PPF has lock-in, but allows partial withdrawals after 7 years. Choose PPF for retirement planning; FD for short-to-medium term savings.
Tax Treatment of FD Interest
FD interest is fully taxable under 'Income from Other Sources' and added to your total income for tax calculation at your applicable slab rate.
TDS (Tax Deducted at Source) Rules
- Banks deduct 10% TDS if FD interest in a financial year exceeds ₹40,000 (₹50,000 for senior citizens)
- Submit Form 15G (individual) or 15H (senior citizen) to avoid TDS if your income is below taxable limit
- TDS is credited against your annual tax liability at filing time
- Interest from multiple FDs at the same bank is combined for TDS calculation
Section 80TTB Benefit for Senior Citizens
Senior citizens (60+) with total annual interest up to ₹50,000 can claim deduction under Section 80TTB, effectively reducing taxable income. This is separate from the TDS threshold.
Frequently Asked Questions (FAQs)
Is FD interest taxable?
Yes, FD interest is fully taxable as per your income tax slab. Banks deduct 10% TDS if interest exceeds ₹40,000/year (₹50,000 for seniors). The interest is added to your total income for tax calculation. However, senior citizens can claim ₹50,000 deduction under Section 80TTB.
What is the minimum FD amount I can invest?
Most banks accept FDs from ₹1,000. Private and foreign banks typically require ₹5,000 to ₹10,000 minimum. Some banks have no upper limit for bulk deposits. Check your bank's policy for exact minimums.
Can I break my FD before maturity?
Yes, but premature withdrawal usually involves penalties. You typically lose 0.5% to 1% of the agreed interest rate. For example, on a 7% FD, you might receive only 5.5% to 6.5% interest. Flexi FDs allow partial withdrawal without penalty but offer lower rates.
Which bank gives the highest FD interest rates?
Rates vary, but private banks (HDFC, ICICI, Axis) and select public banks often offer competitive rates of 7-8.5% for 3-5 year tenure. Small Finance Banks and NBFC deposits may offer up to 9-10%, but carry higher risk. Always verify current rates on bank websites and consider DICGC insurance coverage (₹5 lakh limit per bank).
Is my FD safe? What if the bank fails?
Bank FDs are extremely safe. Deposits up to ₹5 lakh per bank are insured by DICGC (Deposit Insurance and Credit Guarantee Corporation). If a bank fails, DICGC guarantees repayment. To maximize safety with large amounts, split deposits across multiple banks (each covered up to ₹5 lakh).
What is the difference between cumulative and non-cumulative FDs?
Cumulative FDs reinvest interest quarterly until maturity, so you receive principal + all accumulated interest in one lump sum (higher maturity amount). Non-cumulative FDs pay interest quarterly/monthly to a separate account. Choose cumulative for long-term investment, non-cumulative if you need regular income from your deposit.
How does TDS work on FD interest?
Banks automatically deduct 10% TDS when FD interest in a financial year exceeds ₹40,000 (₹50,000 for seniors). To avoid TDS, file Form 15G/15H before FD maturity if your total income is below taxable slab. The deducted TDS is credited when you file income tax return, so you don't lose money, just face timing delay.
What is a Tax-Saving FD under Section 80C?
Tax-Saving FDs have a 5-year lock-in period and offer Section 80C deduction up to ₹1.5 lakh per year. Interest earned is still taxable. Rates are typically 0.5% lower than regular FDs due to tax benefit. Ideal for tax planning and long-term savings, but avoid if you might need funds within 5 years.