It depends. If your employer reimbursed you with TAX FREE reimbursement you cannot claim the tuition credit.
By law your employer can only give you $5250 maximum, tax free. If your tuition and other costs was less than that, and you employer reimbursed it all, you do not even need to enter your 1098-T. You have nothing to claim.
If you got more than $5250, the amount above $5250 is usually already included in box 1 of your w-2. Since you have essentially paid tax on that part, it is considered your after tax money and that amount can be used to claim the tuition credit. As described at the other reply, the TurboTax interview can handle this situation. Answer the questions carefully.
The 1098-T is only an informational document. The numbers on it are not required to be entered onto your tax return.
