4137x Apr 2026

IRS is the tax document used to calculate and report the Social Security and Medicare taxes owed on unreported tip income . This includes cash tips, noncash tips, and "allocated tips" shown in Box 8 of your Form W-2 that were not previously reported to your employer . Core Purpose of Form 4137

: Unreported income is not credited to your Social Security history, potentially lowering your future monthly benefit payments . IRS is the tax document used to calculate

For more specific guidance, you can review IRS Publication 531 on reporting tip income . IRS is the tax document used to calculate