Tax return filing is the process of reporting your income, expenses, and other financial details to the government, typically on an annual basis. In India, individuals and businesses must file their returns with the Income Tax Department to determine whether they owe taxes or are eligible for a refund. The process involves calculating total income from various sources such as salary, business profits, or investments, applying eligible deductions and exemptions, and then computing the final tax liability. Filing can be done online through the official portal, making it convenient and efficient. Timely filing is important to avoid penalties and to maintain financial transparency, which can also be helpful when applying for loans or visas.