FD Monthly Interest Calculator
Calculate your fixed deposit monthly interest, total interest, and maturity amount in seconds.
What is an FD Monthly Interest Calculator?
An FD calculator monthly interest tool helps you estimate how much interest your fixed deposit can generate every month. Instead of manually calculating numbers with formulas, you can enter your deposit amount, rate, and tenure to get instant results.
This is especially useful when you are comparing fixed deposit options across banks and deciding whether to choose monthly payout or cumulative growth.
How Monthly Interest on FD Is Calculated
1) Non-cumulative FD (Monthly Income Option)
In non-cumulative plans, interest is paid out to you every month. A simple approximation formula is:
- Monthly Interest = Principal × (Annual Rate / 12)
- Total Interest = Monthly Interest × Number of Months
- Maturity Amount = Principal + Total Interest
This option is often chosen by retirees or anyone looking for regular monthly income from their savings.
2) Cumulative FD (Compounding Option)
In cumulative FDs, interest is added back to your principal. That means you earn interest on interest. If compounded monthly, the formula is:
- Maturity Amount = Principal × (1 + Annual Rate/12)Months
- Total Interest = Maturity Amount - Principal
This option is better when you do not need monthly cash flow and want larger maturity value.
Example: FD Monthly Interest Calculation
Suppose you invest ₹1,00,000 at 7.5% annual interest for 24 months.
- Approx monthly interest: ₹625
- Total interest (non-cumulative estimate): ₹15,000
- Approx maturity: ₹1,15,000
If cumulative monthly compounding is selected, maturity will be slightly higher because each month interest is reinvested.
Why This Calculator Is Useful
- Quickly compare bank FD schemes.
- Plan monthly passive income from deposits.
- Estimate maturity corpus for future goals.
- Understand compounding impact before investing.
- Create better short-term and medium-term saving strategies.
Factors That Affect FD Monthly Interest
Interest rate
Even a 0.5% higher rate can significantly increase your total returns, especially for larger deposits.
Tenure in months
Longer tenure generally improves the total interest earned, but your money stays locked for longer.
Payout type
Monthly payout gives immediate cash, while cumulative FDs maximize maturity value through compounding.
Bank and special categories
Different banks offer different rates. Senior citizen FD plans may offer an additional rate premium.
Tax on FD Interest (Important)
FD interest is usually taxable as per your income slab. Banks may deduct TDS when interest crosses prescribed thresholds. So your actual post-tax monthly income can be lower than the pre-tax estimate shown by the calculator.
- Keep PAN updated with your bank.
- Track total FD interest across all banks.
- Include FD interest in your income tax return.
- Consult a tax professional for exact post-tax planning.
How to Get Better FD Returns
- Ladder your FDs: Split money across different tenures for flexibility.
- Compare rates: Check multiple banks before booking.
- Use cumulative for growth goals: Ideal for future lump-sum needs.
- Use non-cumulative for monthly needs: Useful for predictable income.
- Reinvest smartly: Reassess rates at maturity before renewal.
Frequently Asked Questions
Is monthly FD interest fixed?
Yes, for most standard fixed deposits, the agreed rate remains fixed for the selected tenure, unless it is a special floating-rate product.
Which is better: cumulative or non-cumulative FD?
If you want monthly income, choose non-cumulative. If you want maximum maturity value, cumulative is typically better.
Can I withdraw FD before maturity?
Yes, many banks allow premature withdrawal, but a penalty rate may apply. Always review the bank's terms.
Does this calculator show exact bank payout?
It gives a strong estimate. Exact bank payout can differ due to compounding conventions, payout cycles, and tax deductions.
Final Thoughts
A fixed deposit monthly interest calculator is a practical planning tool. Use it to model multiple scenarios, choose the right FD type, and align your deposit with your cash flow or growth goals. Try different rates and tenures above to find the best fit for your financial plan.