Good day zearatul171,
You can work for an employer and receive a w2 and also work as an independent contractor and receive a 1099-NEC. They should not be from the same payer.
If you form a business and work as an independent contractor, you would be able to deduct your necessary and usual business expenses against any income that is earned. There are a lot of other considerations.
This is a great resource to review if you are considering starting a small business.
Without a more thorough understanding of your tax situation; I can not advise exactly how your taxes would change.
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