If you meet the income guidelines you can for a Roth.
For a Traditional IRA, once you reach the year in which you turn age 70 ½ you are no longer eligible to make a Traditional IRA contribution.
https://www.thebalance.com/minimum-and-maximum-age-limits-for-ira-contributions-2388696
to enter in TurboTax go to:
To enter IRA Contribution
Click on Federal Taxes (Personal
using Home and Business)
Click on Deductions and Credits
Click on I'll choose what I work on
(if shown)
Under Retirement and Investments
On Traditional and Roth IRA Contributions
click on the start or update button
