Estimate FD Maturity and Compounding
Compare deposit interest under explicit rate, tenure and compounding assumptions without treating the projection as a bank quote.
Use the interactive tool ↓Identify the type of deposit
A cumulative deposit reinvests interest; a periodic-payout deposit pays it out. The calculator models accumulation at the selected compounding frequency. It does not automatically represent a monthly income deposit or reproduce a particular bank’s day-count rules.
FD Calculator
Maturity amount
₹1,41,478
Reproduce a one-year example
For an assumed ₹1,00,000 deposit at 8% per year with yearly compounding for one year, maturity is ₹1,08,000 and interest is ₹8,000. Choose yearly compounding explicitly before checking this example.
For quarterly compounding with the same assumed rate and term, the model gives 100000 × (1 + 0.08/4)^4, approximately ₹1,08,243.22. More frequent compounding increases this modeled maturity because interest itself earns interest sooner. The example is not a currently offered deposit rate.
- Enter deposit amount and the quoted annual rate.
- Enter tenure using years and additional months.
- Match the compounding frequency to the deposit terms.
- Compare principal, interest and maturity rather than only the largest number.
Understand the calculation boundary
The formula is P × (1 + r/n)^(n×t), where r is the annual rate as a fraction, n is compounds per year and t is years plus months divided by twelve. Fractional periods are modeled mathematically. A bank may use different rules for incomplete quarters or early closure.
The displayed interest is before tax and other deductions. TDS, tax liability, premature-withdrawal penalties, changing renewal rates and extra deposits are not modeled. A nominal balance also does not account for inflation.
Resolve a mismatch with a bank quote
Check whether the rate is nominal or already an effective annual yield. Verify cumulative versus payout terms and the exact start/end dates. Do not add the months field a second time when the years entry already includes a fraction.
Use Compound Interest Calculator for a separate recurring-contribution scenario. For an actual deposit decision, the institution’s written product terms and your applicable tax position control the proceeds.