Tax write off - for buying computer etc

To write off computers or other asset used in your side hustle, you can write off using the following method in the order of priority -

1. Section 179 expense
2. Bonus Depreciation (Special Additional Depreciation)
3. MACRS - 5 years for computers @200% using mid year convention.

As long as someone is paying you for the side hustle, it's a great idea to write-off computers, etc. You'll have to file a Schedule C, but you don't need to form an LLC or any other business entity. You can take a loss for at least 3 years before the IRS questions whether it's a business or a hobby.