FD Calculator: Plan Your Fixed Deposit

📘 Fixed Deposit: Complete Guide & Formula

A Fixed Deposit (FD), also known as a term deposit, is one of the most popular investment instruments in many countries, especially in India. It allows you to invest a lump sum amount for a fixed period at a predetermined interest rate, earning guaranteed returns. In this comprehensive guide, we’ll cover how FD maturity is calculated, the impact of compounding frequency, tax implications, and how our multi‑currency calculator can help you plan better.

🔢 The FD Formula (Compound Interest)

For cumulative FDs where interest is reinvested, the maturity amount is calculated using the compound interest formula:

• A = Maturity amount
• P = Principal (deposit amount)
• r = Annual interest rate (decimal)
• n = Number of compounding periods per year (e.g., 4 for quarterly)
• t = Tenure in years

For non‑cumulative FDs (interest paid out periodically), simple interest is applied: Interest = P × r × t. The principal remains constant, and the payout does not earn further interest.

📊 Example Calculation (Quarterly Compounding)

Suppose you deposit ₹5,00,000 at 7.5% p.a. for 5 years, compounded quarterly (n=4). Using the formula:

A = 5,00,000 × (1 + 0.075/4)^4×5 = 5,00,000 × (1.01875)²⁰ ≈ ₹7,24,364
Interest Earned = ₹7,24,364 – ₹5,00,000 = ₹2,24,364

Our calculator above does this instantly for any tenure, payout option, and currency. Try changing the payout frequency to see the effect.

⚖️ Cumulative vs. Non‑Cumulative FDs

• Cumulative FD: Interest is reinvested and paid at maturity. Best for wealth accumulation.
• Non‑Cumulative FD: Interest is paid out periodically (monthly, quarterly, etc.). Suitable for regular income needs (e.g., retirees).

💡 Factors Affecting FD Returns

• Compounding frequency: More frequent compounding (quarterly vs. yearly) yields higher returns.
• Tenure: Longer tenures allow more compounding cycles, increasing effective yield.
• Interest rate: Usually, senior citizens get a higher rate (often 0.25%–0.75% extra).
• Tax deduction at source (TDS): In India, banks deduct TDS on interest exceeding ₹40,000 (₹50,000 for senior citizens) per annum. Plan accordingly.

💰 Tax on Fixed Deposit Interest

Interest earned from FDs is fully taxable as per your income tax slab. Banks deduct TDS at 10% (if PAN is provided) or 20% (without PAN) if interest exceeds the threshold. You can submit Form 15G/15H to avoid TDS if your total income is below the taxable limit. For NRIs, TDS is applicable at a higher rate. Always consult a tax advisor.

📈 FD vs. Recurring Deposit (RD) vs. Mutual Funds

• FD: Lump sum investment, fixed return, low risk.
• RD: Monthly investments, also fixed return, ideal for regular savers.
• Debt mutual funds: Market linked, higher potential returns but with some risk.
• Use our SIP calculator to compare with mutual fund investments.

🌍 Multi‑currency FD Calculator – How It Works

The calculator at the top lets you choose from INR, USD, EUR, GBP, and JPY. Simply select your currency, and all amounts (deposit, interest, maturity) will display with the corresponding symbol. This is particularly useful for NRIs comparing FD rates in different countries or for international investors. Note: No actual currency conversion is applied; it simply changes the symbol.

🔍 Frequently Asked Questions

📚 External Resources & Further Reading

• Reserve Bank of India – Banking Info
• Investopedia: Term Deposit
• Income Tax India – TDS on Interest

🔗 Related Tools from Finance Toolbajar

• CAGR Calculator – For lump sum investment returns.
• SIP Calculator – Plan mutual fund investments.
• Percentage Calculator – Quick percentage changes.
• RD Calculator – For recurring deposits.

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