The sole proprietor business is a disregarded entity for your tax return. It does not matter that there is an LLC if your fiancé is the sole proprietor of the business.
When you prepare your 2024 joint return, ALL of your combined income for the year 2024 will go on the same Form 1040, including the income from the business and including the business expenses, which will go on a Schedule C. You will use your Social Security numbers on your joint tax return.
If you want to have more tax withheld from your own paychecks, you can do that. Or your fiancee can start making estimated payments to the IRS.
Your spouse will have self-employment income for which he will pay self-employment tax for Social Security and Medicare. You will need to use online Premium software or any version of the CD/download so that you can prepare a Schedule C for your business expenses.
https://ttlc.intuit.com/questions/2926899-how-does-my-side-job-affect-my-taxes
https://ttlc.intuit.com/turbotax-support/en-us/help-article/form-1099-nec/1099-nec/L5qTsBiSe_US_en_U...
https://ttlc.intuit.com/community/self-employed/help/how-do-i-report-income-from-self-employment/00/...
https://ttlc.intuit.com/community/self-employed/help/what-is-the-self-employment-tax/00/25922
https://ttlc.intuit.com/questions/2902389-why-am-i-paying-self-employment-tax
https://ttlc.intuit.com/questions/1901340-where-do-i-enter-schedule-c
https://ttlc.intuit.com/questions/3398950-what-self-employed-expenses-can-i-deduct
https://blog.turbotax.intuit.com/self-employed/self-employed-tax-deductions-
calculator-2021-2022-50907/
https://ttlc.intuit.com/questions/1901110-do-i-need-to-make-estimated-tax-payments-to-the-irs
https://turbotax.intuit.com/tax-tools/calculators/self-employed/
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
