Self-employment tax
A note to american citizens, regardless of where you live,
this happened to me so I want to let you know of your tax obligation.
The IRS considers the sale of stock photos as a form of self-employment.
If you earn a total of more than $400 from all stock agencies annualy you are required
to pay a 15.3% Self-Employment (SE) tax in addition to your income tax on any self-employment earnings .
Adobe, Shutterstock and other US based agencies send the IRS a copy of your 1099.
More about SE tax can be found here:

