When receiving income in Mexico for a commercial activity such as rent from rental property (Airbnb) or online sales (Amazon, Mercado Libre, etc…), you are obliged to pay taxes in Mexico for such income.
As from 1 June 2020, the Mexican Government requires that all the digital platforms in Mexico, such as Amazon, Mercado Libre, Airbnb, etc, withhold a percentage of their users’ sales as a tax payment. Digital platforms are requesting all their users provide them their RFC, which is their Mexican taxpayer registry number.