Tip Income Not Reported on Line 1a
Enter the total of your tip income that was not reported on Form 1040, line 1a. This should include any tip income you didn’t report to your employer and any allocated tips shown in box 8 on your Form(s) W-2 unless you can prove that your unreported tips are less than the amount in box 8. Allocated tips aren’t included as income in box 1. See Pub. 531 for more details. Also, include the value of any noncash tips you received, such as tickets, passes, or other items of value. Although you don’t report these noncash tips to your employer, you must report them on line 1c.
You may owe social security and Medicare or railroad retirement (RRTA) tax on unreported tips. See the instructions for Schedule 2, line 5.