If you CAN be claimed as someone else's dependent they do not need your permission---so it comes down to whether you meet the criteria to be claimed as someone else's dependent.
https://ttlc.intuit.com/community/dependents/help/when-do-i-have-to-answer-yes-to-being-claimed-as-a...
Someone else claimed me as a dependent and my return was rejected
If someone else claimed you as a dependent already, then your e-filed return will be rejected. Print, sign and mail your own return which says in My Info that you cannot be claimed as a dependent. Mailed returns are processed differently by the IRS. It will take some time (maybe even up to a year) but eventually the IRS will contact both parties and sort out who could rightfully claim you. The person who wrongfully claimed the dependent will face repayment of refund $, plus penalties.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS/state received the return.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
