Per the IRS:
"June 13, 2017
WASHINGTON — The Internal Revenue Service announced today the addition of several new features to the online account tool first introduced late last year as part of the IRS’s commitment to improve and expand taxpayer services.
The online account allows individual taxpayers to access the latest information available about their federal tax account through a secure and convenient tool on IRS.gov. When it first launched in December 2016, the tool assisted taxpayers with basic account inquiries such as information about their balance due and access to the various IRS payment options. Since then, the IRS has added new features allowing taxpayers to:
- View up to 18 months of tax payment history
- View payoff amounts and tax balance due for each tax year
- Obtain online transcripts of various Form 1040-series through Get Transcript ...
Before accessing the tool, taxpayers must authenticate their identities through the rigorous Secure Access process. This is a two-step authentication process, which means returning users must have their credentials (username and password) plus a security code sent as a text to their mobile phones."
Be advised that signing up for this will probably require you to know every address you've ever had, every bank, credit card & loan account you've ever had, and possibly the name of your Aunt Tillie's Chihuahua...
Okay, it's not quite that bad, but you're going to have to prove that you are you, so be prepared....
If you don't want to go through the "Spanish Inquisition," you can complete an IRS power of attorney form to let your tax professional do that for you.
I'd be happy to help you with that.