the first step is downloading all six programs listed on this page, without running any of them until all have been downloaded and saved in a specific folder, and downloading the program ReceitaNet as well.

the program ReceitaNet may require additional add-ons as listed on the page for each operating system.

the second step requires filling-in all the information that is requested via the above programs, and submitting them online to the Receita Federal - this will generate a receipt that must be printed out on paper and kept.