Banks are required to deduct tax on interest income when deposits held in all the bank branches is more than Rs.10,000 in a year. A 10% TDS is deducted if PAN details are available. It is 20% if the bank does not have your PAN details.

The details of TDS deducted on Fixed Deposit Interest is in the Form 26AS.

If your total income is below the taxable limit, you can avoid tax deduction on fixed deposits by submitting Form 15G and Form 15H to the bank requesting them not to deduct any TDS. Form 15H is for senior citizens, those who are 60 years or older; while Form 15G is for everybody else.Alternatively, you can file your income tax return and claim the refund.