After you file

you can also get it from the IRS

https://www.irs.gov/individuals/get-transcript 

 

 

You can get various Form 1040-series transcript types online or by mail. If you need your prior year Adjusted Gross Income (AGI) to e-file, choose the tax return transcript type when making your request. 

 

Request Online
What You Need
To register and use this service, you need:

your SSN, date of birth, filing status and mailing address from latest tax return,
access to your email account,
your personal account number from a credit card, mortgage, home equity loan, home equity line of credit or car loan, and
a mobile phone linked to your name (for faster registration) or ability to receive an activation code by mail