General Brazilian
autônomo/autônoma
Most common usage; encompasses informal and formal self-employed workers
Rio de Janeiro
autônomo/profissional independente
Often interchangeable; professional independent used for higher-income professionals
São Paulo
profissional autônomo/microempresário
Microempresário used when referring to registered small business owners
Portugal
trabalhador independente/profissional liberal
Trabalhador independente is standard; profissional liberal for regulated professions