Income from Other Sources is a residual category under the Income Tax Act, 1961, which captures income that cannot be classified under salaries, business/profession, or house property. Common examples include interest earned on savings accounts, fixed deposits, dividends, winnings from lotteries or contests, gifts exceeding the exemption limit, and rental income from sub-letting. This income is fully taxable, subject to allowable deductions, and must be disclosed in the income tax return under the relevant head. Tax calculation involves aggregating all such income, applying applicable deductions under Section 57 (like expenses incurred to earn the income), and then adding it to the total taxable income. Proper record-keeping, including bank statements, interest certificates, and receipts, is essential for compliance and audit purposes. Non-disclosure or incorrect reporting can result in penalties, interest, or scrutiny from tax authorities. Professional assistance is recommended to ensure accurate classification, computation, and filing of income from other sources, thereby maintaining compliance, transparency, and avoiding legal complications.