If your business is a sole proprietorship, single-member LLC, or qualified joint venture you report it on Schedule C included in your personal tax return.
If your business is a multi-member LLC, partnership, S corp, or C corp the business has to file its own tax return, separate from your personal tax return. Your share of the income from the business then has to be reported on your personal tax return. Exactly how that is done depends on the type of business organization.
SELF EMPLOYMENT INCOME/“side jobs”
If you have self-employment income for which you will pay self-employment tax for Social Security and Medicare, you will need to use online Premium software or any version of the desktop software 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/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
If you live in a state with a state income tax, you might need to make estimated payments to your state.
https://turbotax.intuit.com/tax-tools/calculators/self-employed/
If your business is a sole proprietorship, single-member LLC, or qualified joint venture you report it on Schedule C included in your personal tax return.
If your business is a multi-member LLC, partnership, S corp, or C corp the business has to file its own tax return, separate from your personal tax return. Your share of the income from the business then has to be reported on your personal tax return. Exactly how that is done depends on the type of business organization.