Bank Fixed Deposit (FD) Calculator & Ladder Planner

How Bank Fixed Deposit Interest Compounding Works

In India, most commercial and cooperative banks calculate Fixed Deposit (FD) interest using quarterly compounding. Under Reserve Bank of India (RBI) guidelines, the interest is calculated every quarter on your principal balance and added to the principal for the subsequent quarter's calculation.

This results in an effective interest rate that is slightly higher than the nominal annual interest rate. For example, a nominal rate of 7.00% p.a. compounded quarterly translates to an effective annual yield of approximately 7.19% per annum. Our calculator handles this exact compounding math to ensure your maturity estimates are accurate.

Designing an FD Ladder for Liquidity

Locking all your liquid savings into a single 5-year FD exposes you to reinvestment risks and deprives you of access to emergency funds without paying a premature penalty of 0.5% to 1.0%. An FD ladder resolves this:

• Step 1: Staggering Tenures. Instead of putting ₹5 Lakhs into one 5-year FD, break it into five separate FDs of ₹1 Lakh each with tenures of 1 year, 2 years, 3 years, 4 years, and 5 years.
• Step 2: Annual Maturity. At the end of year 1, your 1-year FD matures. You reinvest this amount into a new 5-year FD.
• Step 3: Rolling Liquidity. By repeating this process annually, you establish a rolling structure where one FD matures every single year, allowing you to access cash or lock in peak interest rates.

TDS Rules & Submission of Form 15G and Form 15H

Under Section 194A of the Income Tax Act, banks are required to deduct Tax Deducted at Source (TDS) on your FD interest if it exceeds certain thresholds:

• TDS Threshold: ₹40,000 per financial year for individuals under 60 years, and ₹50,000 per year for senior citizens.
• TDS Rate: Standard rate is 10%. If you fail to provide your PAN to the bank, the TDS rate rises to 20%.
• Avoiding TDS Legally: If your total estimated taxable income for the financial year is Nil, you can submit Form 15G (for individuals under 60) or Form 15H (for senior citizens aged 60+) to your bank branches in April to prevent any TDS deductions.