FSAs are use it or lose it, there is no way to get the money back.
When entering your W-2, you may be asked about the amount in box 10, did you forfeit any amount? If the question is not in the w-2 interview, you need to run the dependent care credit interview. You will indicate that you forfeited the money, that you had no qualifying expenses. The benefit is not added back to your taxable income if you forfeited it, but it would be added back to your income if you received it as reimbursement but had no qualifying expenses. You need to run the correct interview to tell the program it was forfeit.
