Does a 1098t form need to be added to my tax return for my daughter who is a student ? Will I get a bigger refund or lower.

Depends.  If the 1098-T has a larger amount in Box 1 (Tuition) than in Box 5 (Scholarships/Grants) you may be eligible for an Education Credit.

 

If you claim your daughter as your Dependent, you can add her 1098-T to your return.

 

If not, you don't need to enter the 1098-T.  She can save it for her records or report it on her return (if she is required to file a return). 

 

Click this link for more info on how to qualify for Education Tax Credits.