Earlier quoted context omitted.
"we will soon be updating our Terms of Service where your earnings from YouTube will be considered royalties from a U.S. tax perspective (we’ve already made this change to the Terms of Service for U.S. creators in November). This may impact the way your earnings are taxed, and as required by U.S. law, Google will withhold taxes." So you will have to file a tax return and get the money back just like every other incom…
I am not a tax expert, and I’m speaking from a U.S. perspective, but if the earnings are via stream donations (not ads), would that not be considered a small gift and not be taxable?
A car given to an employee as a "gift" is income to the employee and a taxable deduction by the employer. See Duesenberg (I'm trying to find the citation. I only remember that it involved an expensive car given to a senior employee in the early years of US income tax.)
And there is an Andy Griffith Show episode about this, about Aunt May having to pay income tax on prizes. The tax man was played by the guy who played the priest on MASH.
"While in Hollywood, Aunt Bee wins several new appliances on a TV quiz show, but when she returns home she loses her friends as a result. William Christopher plays the IRS agent who visits the Taylors to collect taxes on the prizes."
https://en.wikipedia.org/wiki/List_of_The_Andy_Griffith_Show...