How do I classify 1099 income when it was my main job from Jan to May, then a side job? Overall I made less 1099 money than W-2

[DawnC]

All the 1099 money goes on Schedule C.   You are considered self-employed for that whether it was full time or a side gig.   Follow the instructions for Schedule C.  You can add your 1099 income and deduct business related expenses.   

Where do I enter Schedule C?  

Where do I enter my self-employment business expenses, like home office, vehicle mileage, and suppli...

[xmasbaby0]

Not sure why you are worried about how to "classify" your 1099 income.    You just enter your W-2 income and enter your self-employment income on the same tax return, with no worries over "classifying" which one paid more.

If you have a 1099NEC it is self-employment income and you will be paying self-employment tax for Social Security and Medicare.

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/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/turbotax-support/en-us/help-article/import-export-data-files/enter-self-empl...

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-tips/small-business-taxes/the-home-office-deduction/L1RZyYxzv

https://ttlc.intuit.com/turbotax-support/en-us/help-article/estimated-taxes/make-estimated-tax-payme...

https://turbotax.intuit.com/tax-tools/calculators/self-employed/

https://ttlc.intuit.com/community/business-taxes/discussion/self-employed-don-t-miss-these-tax-moves...

https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/enter-schedule-...

https://ttlc.intuit.com/turbotax-support/en-us/help-article/payroll-additions-deductions/qualify-qua...

https://ttlc.intuit.com/turbotax-support/en-us/help-article/self-employment-taxes/self-employed-expe...

[Hal_Al]

1099-NEC income is almost always classified as self employment (filed on Schedule C). The fact that it was your main job for even part o the year solidifies that classification.