FD Calculator India 2026: Fixed Deposit Maturity and Interest

A fixed deposit calculator helps estimate how much a deposit may grow over a selected tenure. It is useful when comparing bank FD rates, tenure options, senior citizen rates, and cumulative versus payout deposits.

Use the FD Calculator to enter the deposit amount, interest rate, tenure, compounding frequency, and interest mode. The calculator shows maturity amount, estimated interest, total receivable, and payout estimate where applicable.

Cumulative FD formula

For a cumulative FD, interest is added back to the deposit and compounded.

Maturity amount = Principal x (1 + annual rate / compounding periods per year) ^ total periods

Interest earned = Maturity amount - Principal

For example, if Rs 1,00,000 is invested at 7% for 1 year with quarterly compounding:

• Quarterly rate = 7% / 4
• Total periods = 4
• Maturity amount is approximately Rs 1,07,186
• Interest earned is approximately Rs 7,186

Monthly or quarterly payout FD

In a payout FD, interest is paid out periodically instead of being reinvested into the deposit.

Estimated periodic payout = Principal x annual rate / payout periods per year

For a monthly payout FD:

• Payout periods per year = 12
• Monthly payout estimate = Principal x annual rate / 12

For a quarterly payout FD:

• Payout periods per year = 4
• Quarterly payout estimate = Principal x annual rate / 4

The principal is usually returned at maturity, while interest is received during the tenure.

Senior citizen FD rate

Many banks offer an additional rate for senior citizens. The calculator lets you add an extra rate, such as 0.50%, to estimate the impact.

Effective annual rate = Base FD rate + senior citizen extra rate

FD vs simple interest vs compounding

Use the Simple Interest Calculator when interest is not reinvested and you only need a plain interest estimate.

Use the Compounding Calculator when you want to compare different compounding frequencies more generally.

If you are comparing FD against PPF and NPS for tax-saving or retirement planning, use the PPF vs NPS vs FD Calculator and read PPF vs NPS vs FD for Tax Saving and Retirement.

Assumptions

• Cumulative FD mode compounds using the selected frequency.
• Monthly and quarterly payout modes estimate periodic interest without reinvesting payouts.
• Senior citizen extra rate is added to the base annual rate when selected.
• TDS, income tax, premature withdrawal penalty, bank-specific day-count rules, special schemes, and rounding differences are not included.

Disclaimer

The information and calculations provided on this website are for general informational and educational purposes only. Results are estimates based on user inputs and simplified assumptions and may not reflect actual bank payouts or tax treatment. This content does not constitute tax, legal, accounting, or financial advice. Consult a qualified financial advisor, accountant, or the relevant bank before making financial decisions.