You will have self-employment income so next time you file a tax return, you will use Self-Employed software (or any version of desktop software) so that you can prepare a schedule C for your self-employment income. You can still file a joint return, and enter ALL of the income from your spouse's W-2, etc. and enter your own self-employment income on the same tax return.
Since no tax or SS, etc. will be withheld from your self-employment income you will pay self-employment tax for Social Security and Medicare, as well as ordinary federal, state and local income tax.
You will put your business expenses on a Schedule C.
You *might* need to pay quarterly estimated tax --- or your spouse could increase the amount of tax being withheld from her paychecks.
https://ttlc.intuit.com/questions/2903027-how-do-i-report-income-from-self-employment
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://ttlc.intuit.com/questions/1901110-do-i-need-to-make-estimated-tax-payments-to-the-irs
**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.**
