Compute fixed deposit returns with compounding interest, TDS deduction, income tax slab impact, and senior citizen rates — export results to CSV.
For a cumulative FD, the maturity amount is P × (1 + r/(n×100))^(n×t), where P is principal, r is the annual interest rate (%), n is compounding frequency per year, and t is tenure in years. For non-cumulative FDs, interest is paid out periodically and only the principal is returned at maturity.
Banks deduct TDS at 10% (if PAN is submitted) or 20% (no PAN) when total interest in a financial year exceeds ₹40,000 (₹50,000 for senior citizens aged 60+). File Form 15G (age < 60) or Form 15H (age ≥ 60) at your branch each April to stop TDS if your income is below the taxable limit.
The Deposit Insurance and Credit Guarantee Corporation (DICGC) insures deposits up to ₹5,00,000 per depositor per bank, covering both principal and accrued interest. This applies to all RBI-licensed banks. Post Office schemes are not DICGC-covered but carry a sovereign guarantee from the Government of India.
In a cumulative FD, interest is compounded and reinvested; the full maturity amount is paid at the end. In a non-cumulative FD, interest is paid out periodically (monthly, quarterly, half-yearly, or annually) while the principal is returned at maturity. Cumulative FDs grow faster because of compounding.
The effective post-tax yield accounts for income tax on interest and is expressed as an annualised simple return. For example, ₹7,000 interest on ₹1,00,000 over 1 year at a 20% tax slab leaves ₹5,600 post-tax — an effective yield of 5.60%, lower than the stated 7%.
Yes. Select 'Senior citizen (60–80 yrs)' or 'Super-senior (80+ yrs)' under Customer type. The calculator applies the correct higher TDS threshold of ₹50,000 per year. For the actual senior citizen interest rate (typically 0.25–0.75% higher), enter the bank's senior citizen rate in the Interest rate field.
Most Indian banks compound quarterly — choose 'Quarterly' for SBI, HDFC, ICICI, and most public and private sector banks. Some cooperative and small finance banks compound monthly. Check your bank's FD scheme document to confirm. Higher compounding frequency gives slightly better returns on cumulative FDs.
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