The user can file the Income Tax Return (ITR) in two ways:

In offline mode: Download the applicable ITR, fill the form offline, save the generated XML file and then upload it. To e-File the ITR using the upload XML method, the user must download either of the following ITR utility: Excel Utility/Java Utility

After you download the excel or the java version of the utility form, extract the downloaded utility ZIP file and open the Utility from the extracted folder. Then provide your information, fill the applicable and mandatory fields of the ITR form. Validate all the tabs of the ITR form and Calculate the Tax. Then generate and Upload the XML to e-Filing portal by entering user ID (PAN), Password.Click on the 'e-File' menu and click 'Income Tax Return' link and Submit the ITR.

Collect documents such as Form 16, salary slips, and interest certificates and Form 26AS. Keeping them handy will help you compute your gross taxable income and will provide you with the details of tax deducted at source (TDS) from your income in 2019-20.

This is the second option. In online mode: Enter the relevant data directly online at e-filing portal and submit it. Taxpayer can file ITR 1 and ITR 4 online.

Go to the Income Tax e-Filing portal, www.incometaxindiaefiling.gov.inLogin to e-Filing portal by entering user ID (PAN), Password, Captcha code and click 'Login'.

Once you logged in click on the 'e-File' menu and click 'Income Tax Return' link. Fill in the asked details and submit it.  

Then you can verify your ITR electronically and via physical verification. In the case of e-verification, you will not have to physically send your tax return to the Income Tax department.
 

After the return is verified, either via e-verification or physically, the income tax department will start processing your tax return. Once it is processed, the tax department will inform you of the same via e-mail.