ITR stands for Income Tax Return, which is a form in which taxpayers file information about their income earned and tax applicable to the income tax department. The Income Tax department provides seven different types of forms such as ITR-1, ITR-2, ITR-3, ITR-4, ITR-5, ITR-6, and ITR-7. The different types of ITR forms are used by different categories of taxpayers based on their income sources and other criteria. Here is a brief description of each form:

1. ITR-1: This form is also known as Sahaj and is used by individuals who have income from salaries, one house property, and other sources like interest income. The total income should not exceed Rs. 50 lakhs.

2. ITR-2: This form is used by individuals and Hindu Undivided Families (HUFs) who have income from salaries, more than one house property, capital gains, and other sources. The total income can be more than Rs. 50 lakhs.

3. ITR-3: This form is used by individuals and HUFs who have income from a proprietary business or profession.

4. ITR-4: This form is also known as Sugam and is used by individuals, HUFs, and firms (other than LLP) who have a presumptive income from business or profession. The total income should not exceed Rs. 50 lakhs.

5. ITR-5: This form is used by firms, LLPs, Association of Persons (AOPs), and Body of Individuals (BOIs).

6. ITR-6: This form is used by companies other than those claiming exemption under section 11 of the Income Tax Act.

7. ITR-7: This form is used by persons including companies who are required to furnish a return under section 139(4A), section 139(4B), section 139(4C), section 139(4D), or section 139(4E) of the Income Tax Act.

Taxpayers should choose the appropriate ITR form based on their income sources and other criteria to avoid any penalties or legal issues.