See the End User License Agreement, scroll down to Section B Software and Services Terms
#1 Supplemental License Grant and Restrictions
https://turbotax.intuit.com/corp/license/desktop.jsp
In addition to the General License Grant you may: (i) install and use a copy of the Software on up to five (5) computers owned by you (at home or at work); (ii) use the Software only to prepare, print and/or electronically file your federal 2023 tax year returns and related 2023 state tax returns as described below; (iii) make one backup copy of the Software for your personal use as permitted under this license grant.
