As per the Income Tax Act, 1961, section 200A, if the IT department of India fails to make the TDS refund within the stipulated time period, you are entitled to get an interest rate of 6% per annum on the refund amount. The interest will be calculated from the financial year's first month, i.e., April. However, no interest will be offered if the amount is less than 10% of the actual tax liability.