So let’s break this word and try to understand. Income tax is the tax that every resident in the country pays to its government from the income that they make. And return is nothing but a form. It is the form that you submit to the government declaring the amount of tax that you owe to the government. So ITR is nothing but an income tax form. So it is filed at the end of the year. The last date for filing ITR for an individual is 31st July. Here you basically declare all your previous year’s income and pay tax on it. There are different types of ITRs present based on the type of income. You can find the list here : ITR Form Applicable to ITR-1 / Sahaj Individual, HUF (Residents) ITR-2 Individual, HUF ITR-3 Individual, HUF, partner in a Firm ITR-4 Individual, HUF, Firm