The ITR-3 form is for an individual taxpayer or a Hindu Undivided Family, who work solely as a partner in a firm. This also applies for individuals who do not earn any income from a business run by the firm. This form is usually filed by the taxpayers who have only the taxable income earned from the business such as salary, bonus, interest and remuneration. The current ITR 3 form is to be used by an individual or a Hindu Undivided Family who have income from proprietary or are carrying on profession.