My wife works as a massage therapist and receives cash tips only. No employer W-2. Where do I enter her "cash Tips On;y" on these forms?

[LinaJ2018]

Is she working for a company as an employee or independent contractor ? https://ttlc.intuit.com/replies/4243263

If she is an employee and did not receive a W-2, you should still count the received cash as income on your tax return. 

After sign in / select Take me to my return /

1. From the top, select tab Federal Taxes 
2. Wages and Income / 
3. Scroll down to Less Common Income section.
4. Choose Miscellaneous Income 
5. Select the very first option at the top"Other income not already reported on a Form W-2 or Form 1099".
6. Then follow the prompts.

Otherwise, she is considered as a self employed filing a schedule C.

Federal taxes / Wages & Income / Business Items / Business Income and Expenses Schedule C-Start