In order for any country to have a zero percent poverty rate, there must be zero percent of the population living under the international poverty line of U.S. $1.25 a day. So, why is the Monaco poverty rate zero? This feat is not accomplished easily; it is a combination of ideal conditions that have propelled Monaco to achieve its flawless poverty rate.



Monaco has a poverty rate of zero. According to the CIA World Factbook, no portion of Monaco's population lives below the poverty line. It has a poverty rate of 0% and the highest number of millionaires and billionaires per capita in the world. Mind you, it is the second smallest country only the Vatican is smaller. The average GNI per person is over 160,000 so that makes them the richest.



To get Monaco citizenship,you need to be very very rich. The process involves you opening bank account in Monaco and depositing Euro 500,000 in their bank accounts and presenting a bank reference letter to the government stating that you have sufficient funds to support yourself in the country.



You're only allowed to live there (for non-citizens) if you have 1 million dollars in equity. He told me even the cleaning lady in the supermarket wears expensive clothes and has a 700,000 apartment.

Source:
https://money.cnn.com/2015/05/29/luxury/monaco-rich-millionaire-tax/index.html