1099 her

12.4% is what you pay in social security for self-employment tax when you file your schedule c for $1099 on the tax return

 

This is where an llc would help, make her an employee under one ... pay the right taxes.

Personally if you are going to live together in a truck, marry her,.

 

Don't most people use an LLC to dodge taxes by paying themselves a low salary and then taking the distribution which is self-employment tax-free

 

Only if you file as S-Corp, and you still have to pay yourself a "reasonable" salary. Slavery isn't cheap.

 

On a W2 he’d be required to pay some of the taxes on her, where a 1099 she’s on the hook for the full amount of taxes,

 

First look into common law marriage in your state. You are likely already married in the eyes of the law. Might as well make if formal and maybe get a new toaster. Then pay for an hour with your accountant to see if incorporating would pay.