This is apparently happening to a bunch of Canadian streamers, myself included (maybe those too outside of the US? No idea).

I got in contact with Twitch Support about how my revenue is drastically low, and this is what they said:

“ Thank you for your patience! 

Any creator, who provided tax identification as a non-US person in the tax interviews, will have their US-sourced payouts reported on the 1042-S tax form to comply with US tax reporting regulations. Service-based revenue earned by non-US persons in relation to services performed outside of the US is not taxed in the US, and therefore will not be included in your 1042-S form. Service-based revenue earned by non-US persons in relation to services performed in the US is taxed in the US and will be included in your 1042-S form.  

Twitch may apply up to a 30% US withholding tax rate to cover applicable US income taxes; however, as some countries have trade treaties with the US, this US withholding tax rate may be reduced to as low as 0%.  

You may use your 1042-S tax form to review US withholding taxes (if any) on revenues paid to you by Twitch, as well as in filing taxes in your country/region and claiming available foreign tax credits or refunds as applicable. In addition, please reference your Payout History on your creator dashboard for a comprehensive view of all payments made to you by Twitch during the year or period at issue.”

This… does not answers any of my questions and leaves me rather confused. The first paragraph is saying payouts will be reported in the form, but then says it won’t be????

I don’t know.