Per IRS Publication 929 Tax Rules for Children and Dependents, on page 8:

Dependent's Own Exemption

A person who can be claimed as a dependent on another taxpayer's return generally can’t claim his or her own exemption. This is true even if the other taxpayer doesn’t actually claim the exemption. However, for tax years 2018 through 2025, the deduction for personal exemptions is suspended for a taxpayer, their spouse, and their dependents.

To indicate this on your TaxAct return:

1. From within your TaxAct return (Online or Desktop), click Federal. On smaller devices, click in the upper left-hand corner, then click Federal.
2. Click Basic Information in the Federal Quick Q&A Topics menu to expand, then click Dependent on someone else's tax return.
3. Continue with the interview process to enter all of the appropriate information.
4. On the screen titled Can you be claimed as a dependent?, check I can be claimed as a dependent on someone else's return, then click Continue.

Note that any link in the information above is updated each year automatically and will take you to the most recent version of the document at the time it is accessed.