You can open an IRA account TODAY, that's it.
Call an investment firm, or maybe your bank to open it.
You can put up to $5,500 in it, but you need to establish the account first.
When you do that,
1. Go to Deductions & Credits.
2. Go to Retirement and Investments.
3. Click Start or Update by Traditional and Roth IRA Contributions.
4. Follow the screens until you've put in your contribution. You can put anything from 0 to $5,500 to see what effect it has on your taxes.
To check:
1.
Go to My Account.
2.
Go to Tools.
3.
Go to View Tax
Summary.
4.
Go to Preview my 1040.