FD Calculator (Fixed Deposit)
Plan your savings better with our free FD calculator. Calculate your maturity amount and total interest earned with ease.
Educational estimate. Calculator results are for planning and information only, not financial, tax, medical, legal, or engineering advice. Verify important decisions with official sources or a qualified professional.
FD Calculator (Fixed Deposit)
Calculate Fixed Deposit maturity and interest
📐 Formula & Method
FD Formula
Where A is maturity amount, P is principal, r is annual interest rate, n is compounding frequency, and t is time in years.
📋 How to Use
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1
Enter the principal amount you wish to invest in the Fixed Deposit.
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2
Enter the annual interest rate offered by your bank or financial institution.
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3
Select the investment tenure in years.
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4
Choose the compounding frequency (usually Quarterly for most Indian banks).
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5
The calculator will instantly show your maturity amount and total interest earned.
💡 Key Insights
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Fixed Deposits offer guaranteed returns with zero market risk.
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Higher compounding frequency (e.g., monthly vs. annual) leads to slightly higher maturity amounts.
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FDs are ideal for capital protection and guaranteed returns.
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Consider Tax-Saving FDs (5-year lock-in) for Section 80C benefits in India.
📊 How to Interpret Your Result
Maturity Amount
The total sum you receive at the end of the tenure, including principal and interest.
Interest Earned
The profit you made on your investment. Compare this with inflation to see your real growth.
How to Use the FD Calculator for Smarter Savings
A Fixed Deposit (FD) is one of the safest investment options available, offering guaranteed returns over a specified period. Our FD calculator helps you estimate exactly how much wealth you will accumulate by the end of your tenure.
The maturity amount depends on the compounding frequency. Most banks in India use quarterly compounding, which means interest is calculated every three months and added to your principal, leading to "interest on interest."
Using this tool, you can compare different bank rates and tenures to find the most profitable saving strategy for your financial goals.
🔬 Methodology & Accuracy
Formula: Calculates maturity amount using the standard compound interest formula. Tax implications are not included in the calculation.
Data sources: Tax bands, contribution limits and regulatory rates are taken from official US (IRS, SSA) and UK (HMRC, gov.uk) publications for the current tax year, and updated when bands change.
Last reviewed: May 2026 · Accuracy: Results are precise to two decimal places using IEEE-754 double-precision arithmetic. Intended for educational and planning use only.
For informational purposes only. Results are estimates based on the inputs and formulas provided. For financial, tax, medical, or legal decisions, consult a qualified professional. Rates and regulations change — always verify current figures with official sources.