I assume you are a W2 employee and not self employed on a 1099Misc?
Enter it under
Federal Taxes (or Personal for H&B version)
Deductions and Credits
Choose Jump to Full List -or I'll choose what I work on
Then scroll way down to Employment Expenses (and Show More)
Job-Related Expenses - Click the Start or Update button
But it is a Misc Deduction and only the amount OVER 2% of your AGI is deductible so it might not be worth putting it in, unless it's a lot. And then the total of ALL your itemized deductions has to be more than the standard deduction to get any benefit.
