I have a direct sales job, what can I write off?

[Marketstar]

You can write off all ordinary and necessary expenses incurred to produce your income.

Per the IRS: To be deductible, a business expense must be both ordinary and necessary. An ordinary expense is one that is common and accepted in your trade or business. A necessary expense is one that is helpful and appropriate for your trade or business. An expense does not have to be indispensable to be considered necessary.

See https://www.irs.gov/Businesses/Small-Businesses-&-Self-Employed/Deducting-Business-Expenses

Some examples:

Business Travel

Communication

Legal and Professional

Meals and Entertainment

Office Expenses

Supplies

Vehicle Expenses