[header] How to file taxes as a published writer [title] Gather proof of your writing income. [step] You should receive 1099 forms from your publisher. These forms will state the amount of royalties that you have received. 
If you self-publish through amazon, then they will send you separate 1099-misc forms for each country where you earned royalties. [substeps] If you write pieces for hire, then you should also get a 1099-misc from the publisher.