Final answer:
Your client is incorrect. Income from online sales should be included in the gross income for tax purposes, according to the IRS.
Step-by-step explanation:
Your client is incorrect. Even though the transactions are conducted online, they are still considered taxable income and should be included in her gross income for tax purposes. The Internal Revenue Service (IRS) requires individuals to report all income, including income from online sales.
To support this, you can cite the IRS's definition of gross income, which includes income from all sources, unless exempted by law. Selling items on e-Bay falls under the category of business income, and therefore should be included in the tax return.
It is important for Mary Sue to consult with a tax professional who can provide accurate advice and guide her through the process of reporting her income correctly to avoid potential penalties or issues with the IRS.