Income Tax Return (ITR) is a government document in which an individual or organization submits information to the government about their income, expenses, and taxes paid in a financial year. In Bangladesh, taxpayers file TR with the National Board of Revenue (NBR) to declare income, calculate tax liability, and claim refunds where applicable. Filing income tax returns is mandatory for eligible citizens and businesses and helps the government collect revenue, maintain financial transparency, and provide funds for public services. In short, income tax returns ensure compliance with tax laws and accurate reporting of income.