I have a company in Brazil and lived there for years, but I gave up. Now I am back in Europe.
check this link:
You must require a CPF (Cadastro de Pessoas Físicas) otherwise you can bearly survive in Brazil.
If you don’t have a CPF you are not allowed to buy a mobile chip or sign contracts for example.
To survive its necessary that you speaking portuguese, there are very few that talks english.
What is your plans to survive? Do you have an employment waiting? Or are you planning to run a business? Be prepared that everything is extremely complicated, a bureaucracy that is granit massive. To rent an office for example, you must have CPF, you must have a address and prove that you are living somewhere, then you must have your CPF and signature registered in a Cartorio. Every contracts you need to sign, your signature must be approved by that Cartorio, if not you will not be allowed to sign the contract. And the landlord signature must also be approved and his/hers signature may be regostered at another Cartorio. But before they are approved you must have contract from energy company, and you have to be prepared that previous tenant hasnät payed the energy bill and you are demanded to pay that bill, otherwise you will not have the contract (it happened to me). When all contracts are approved by Cartorio you need to return to the energy company and show the contracts, then you have the energy contract signed and approved and can show them for the landlord.
This is the reality in Brazil. Be prepared, their system is completely different from European system and everything they do is always unnecessary complicated. If you planning to run a business be prepared to pay bribes, if not you will never have your business uprunning. Believe me, I tried in 10 years. I never payed bribes and therefore never got any orders. If you going to rent a car, be careful. You must check EVERYTHING together with a representative from the company. Don’t forget to check if the spare tyre is onboard, if not you will probably be charged for theft of it. That happened to me and my partner. It cost us 400,00 reais more. Brazilians (not everyone, but many) are doing everything they can to cheat you on money, you are a Gringo in their eyes. If you need to have your care repaired, stay with it while they make reparation. Otherwise your car will leave the garage more bad than when it arrived. I have that experience as well. And what ever you do, never argue with a police officer.
Good luck with your future,