I'm only using my Nomad checking account for Exchange Remittances and to use my Digital Card on american websites and while I'm traveling. Do I have to declare the account?

Yes, you have to declare your Nomad checking account in your Income Tax Return of Brazil in the section “Bens e Direitos – Depósito bancário em conta-corrente no exterior”. On your app, you will find a document that will help you with that on "Profile" > "Documents" > "Checking Account" > "Tax Reports".

To you know more about how to declare your Nomad account for the Brazilian IRS, click here.