An expat is simply a person who lives, and often works in a country where they are not from.

The term is effectively the same as "immigrant" but is usually used to describe affluent or Western working immigrants.

In many cases, expats seek out different attributes than an economic immigrant might.

So, what are the best countries for expats?

Well, expats from different countries often congregate in certain regions, for example, of an estimated 5 million expats from the UK, about 1.2 million live in Australia.

However, determining how many of your citizens have moved abroad is incredibly tricky.

In fact, the United States government has no idea, although third-party estimates range from about 2 million to 6 million Americans abroad.

Worldwide, Saudi Arabia hosts the most international expats, while the largest number overall come from India.

But the best countries for expats aren’t necessarily the most obvious.

In 2011, one of Facebook’s cofounders gave up his U.S. citizenship to live full time in Singapore; this way, he could avoid paying U.S. capital gains taxes.

Singapore is one of the most popular expat destinations due to its minimal tax policies, and very high salaries.

In 2014, more than a quarter of all expats living in Singapore were paid over $200,000 dollars a year. But a high salary doesn’t necessarily translate to a higher quality of life.

In fact, it's New Zealand—known for its stunning landscapes rather than its financial policies—which has scored among the highest for quality of life.

Nearly 57% of expats say that they are more physically active in New Zealand, and over half say their health has improved since moving there.

New Zealand may not be the best place to make a living, but the happiness quotient and the welcoming atmosphere make it one of the most popular.

Another country sought out, especially by expat families, is Sweden.

Aside from a complicated, and more expensive tax situation, Sweden ranks highly for childcare, education and quality of life.

Switzerland is similarly highly ranked, but is more so for those who want to balance their work and life.

Switzerland is a culturally developed, centrally located country known for its high quality of life and very high salaries.

A stable, strong currency and business-friendly government make Switzerland an ideal place to work in Europe.

But wealthy Americans may not be able to escape their financial duties all that easily.

According to U.S. tax code, for any amount earned over about $100,000 dollars a year, U.S. citizens abroad have to pay taxes in addition to those imposed by their new home country.

This has led to nearly 3,500 American expats renouncing their U.S. citizenship in 2014.

Expatriation may just be the life for you, but be careful, it is not that easy to find a new country with low taxes, high quality of life, high salaries, and a relatively affordable lifestyle.

For many people, tourism is just an easier way of experiencing different countries without having to actually become an expat.

Learn about the most visited countries in the world in this video.

Well, travel and tourism are huge industries which currently are thought to account for 9% of global GDP or 7 trillion dollars.

In 2015, over a billion tourists travel the world, up by roughly 15 million compare to earlier years.

Every region in the world it's all about a 5% increase in tourism with a big exceptional of Africa where tourisms dropped by about 6%.

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