New Delhi, June 4 -- After the income tax department has extended the last date to file income tax return by 45 days till September 15, taxpayers are likely to be nonchalant. Meanwhile, it is worth noting that CBDT has enabled excel utilities for ITR-1 and ITR-4.

As ataxpayer, you are supposed to know whichtax form applies to you based on the source of your income. Here, we give a lowdown on the common income tax forms from ITR-1 (sahaj) to ITR-4 (sugam).

ITR-1: Also known as sahaj, this form is meant for those taxpayers whose total income does not exceed Rs.50 lakh during the financial year.

The income should be from salary, one house property, family pension income, agricultural income (up to Rs.5,000), and other sources, which inclu...