Understanding the ITIN for foreigners: who needs it, required documents, and a step-by-step guide to applying via Form W-7, and what it does not authorize work.
Flavio Inacarato
Practical guide for Brazilian companies: fill out the W-8BEN-E form correctly and avoid 30% withholding on US payments.
Learn when to charge sales tax in the US: understand the physical and economic link, sales through platforms or directly, and how to regularize your situation.
Understand the changes to FinCEN's BOI reporting: who is exempt, who still needs to file, and how to use the official free BOI E-Filing channel.
Understand the 2026 changes to taxes on remittances abroad: when IOF and IRRF apply, what documents are required, and how to avoid tax surprises.
Learn when Brazilian companies need a DUNS number in the US, how to check the DUNS Lookup, and how to request it through the official channel.