FD Calculator: Calculate Fixed Deposit Maturity & Interest Online
FD Calculator
Fixed Deposit Maturity & Interest
Calculate your Fixed Deposit maturity amount, total interest earned, illustrative tax impact, estimated future purchasing power, and view a full year-by-year schedule.
FD Calculator
Principal • Rate • Tenure
Enter your FD details and click
Calculate FD to see projected results
💸 Illustrative Tax & Post-Tax Projections
🧺 Explore More Investment Calculators
What is an FD Calculator and Why Use It?
A Fixed Deposit (FD) Calculator is an essential online financial tool that helps investors instantly compute the maturity amount and total interest earned on their lump-sum savings. Unlike manual calculations, an FD calculator accurately factors in the power of compounding—whether compounding happens monthly, quarterly, half-yearly, or yearly—giving you a precise projection of your wealth growth over time.
The Mathematical Formula
Fixed Deposit interest is calculated using two primary methods depending on whether you choose a cumulative or non-cumulative deposit scheme:
For Cumulative FD (Compound Interest)
Where:
- A = Maturity Amount
- P = Principal Deposit Amount
- r = Annual Interest Rate (in decimal form, e.g., 7.1% = 0.071)
- n = Compounding frequency per year (e.g., 4 for quarterly compounding)
- t = Tenure in years
For Non-Cumulative FD (Simple Interest)
In non-cumulative deposits, interest is paid out periodically (monthly, quarterly, or yearly) rather than reinvested, yielding simple interest over the tenure.
Step-by-Step Calculation Example
Let us walk through a practical example to see how your money grows in a cumulative fixed deposit:
- Deposit Amount (P): ₹1,00,000
- Interest Rate (r): 7.0% p.a.
- Tenure (t): 5 Years
- Compounding: Quarterly (n = 4)
Applying the formula: A = 100000 × (1 + 0.07 / 4)^(4 × 5) → A = 100000 × (1.0175)^20 ≈ ₹1,41,478.
The projected maturity amount is approximately ₹1,41,478, yielding a total interest earnings of ₹41,478 over 5 years.
Special Features Explanation
Our advanced FD Calculator includes two standout features designed to give you a realistic, comprehensive financial outlook:
- Inflation Adjusted Returns: Earning 7% on your FD sounds great, but if inflation runs at 6%, your real purchasing power growth is minimal. Our inflation slider computes the estimated "Real Value" of your maturity corpus in today's money, preventing unpleasant surprises down the road.
- Post-Tax Maturity & TDS Impact: Fixed deposit interest is fully taxable under "Income from Other Sources" according to your income tax slab. Our tool automatically calculates illustrative tax deductions across tax brackets (from 5% to 30%), showing you the exact post-tax money hitting your bank account.
How to Use This Calculator
Input Principal
Enter the exact lump-sum amount you wish to invest.
Set Interest Rate
Input your bank's offered rate (toggle Senior Citizen for automatic +0.5% boost).
Choose Tenure
Select your investment timeframe in years.
Select Compounding
Choose monthly, quarterly, half-yearly, or yearly compounding.
Analyze Results
Review maturity, post-tax earnings, inflation impact, and year-by-year schedule.
Fixed Income Asset Comparison
| Feature | Fixed Deposit | Public Provident Fund | National Pension System |
|---|---|---|---|
| Interest Rate Structure | Fixed (Institution-dependent) | Government-notified | Market-linked growth |
| Lock-in Period | Flexible (1 to 10+ Years) | 15 Years | Until Retirement Age |
| Tax Treatment | Interest fully taxable per slab | Exempt-Exempt-Exempt | Partial tax-free maturity |
Core Attributes of Fixed Deposits
- Predictable Outcomes: Illustrative returns are locked upfront for relative stability.
- Lower-Risk Profile: Designed for conservative capital preservation strategies.
- Liquidity Options: Loan facilities are typically available against deposited balances.
- Tenure Flexibility: Ranging from short-term to long-term commitments.
- Senior Citizen Adjustments: Enhanced rate frameworks provided by conventional institutions.