Select a tax year for specific amending instructions. There is no LIVE help feature for amending a prior year return ... follow the interview screens carefully in the investment section then if you get stuck you can call the TT support line with a specific question but they will not walk you thru it all or do it for you.
Keep in mind: You have 3 years from the date you filed your return (or 2 years after you paid the tax due, whichever is later) to file an amended return, which means you don't have to get it done by the April 15 filing deadline.
If you purchased Audit Defense for your tax return, call Tax Resources, Inc. at (877)-829-9695, or report your notice on their web site at http://intuit.taxaudit.com/. Do not contact the IRS. Let Tax Resources contact them for you.
This is the membership email you should have gotten: https://ttlc.intuit.com/questions/1901569-when-will-i-get-my-audit-defense-membership-kit
Also read the member agreement at this website -https://turbotax.intuit.com/corp/auditdefense.jsp
If you did not purchase Audit Defense:
TurboTax has a special phone number for help with IRS tax letters, which will be easier than going through regular Customer Support. At the page below, click on the blue button that says "Get Help from TurboTax Support". Then it will ask you what tax year is your letter. Then it will ask you what the letter concerns. Then it will show you the phone number during posted business hours.
https://support.turbotax.intuit.com/irs-notice/audit-support/
