This document provides comprehensive instructions for filling out the ITR-1 SAHAJ form for the Assessment Year 2020-21. It details who is eligible to use this form, outlining the types of income that qualify, and clearly specifies who is not eligible, including individuals with income from business, capital gains, or more than one house property. The instructions also cover the manner of filing, verification, and important points to remember, making it an essential guide for individuals needing to file their income tax returns.