The world’s top 500 people will make about $4.7tn (£2.8tn) by 2030, according to new research from Bloomberg.
It is more than the $3tn (£1.6tn) expected to be earned by the world economy in the same period, which the US economy is forecast to grow by 3.2% in the next three years.
The authors say they have been tracking the future wealth of the world leaders since 2000.
But they argue it is too early to be sure that the richest 1% of the population will grow faster than the rest of the global population.
That means, if you take into account all the other people in the world, only the world population will be growing faster than it is now.
And, if it does not change, the top 1% could earn a third of the annual incomes of the rest.
What are the richest people in Britain?
The richest 1,000 people in British history have amassed more than $11bn, according the data released by Bloomberg.
This includes the richest woman, the Queen, who has a net worth of $12bn.
Among the 100 richest people, the richest American, Donald Trump, is worth $15.5bn, with the world second richest man, Warren Buffett, worth $17.6bn.
What do the figures mean for the economy?
This is the first year the data is available, but it could mean the US has surpassed Europe in terms of wealth inequality.
European Union countries, including Germany, the Netherlands and Denmark, have been growing faster.
In the US, the median net worth is $1.2m, while in Japan, it is $941,500.
In the UK, the wealthiest people make more than a third more than they did in 2013.
The report also shows that the UK’s average income per person in 2030 is expected to rise to £38,400 from £34,400.
However, the middle class is expected shrink by £7,000 in 2030, while the poorest 25% will lose £8,000.
How do we measure wealth?
There are many ways to measure wealth.
A person can buy assets that are worth more than their value.
They can invest, such as shares in companies.
Or they can sell their assets, such a property or shares.
They can also accumulate wealth by investing in companies or the economy as a whole.
These measures are widely used by economists and economists are increasingly sceptical of the idea that we are living in a bubble.
If the figures are correct, they could be the first time the wealth of one billion people is recorded.
What does it mean for people to grow richer?
If you look at how much wealth is being accumulated by the richest 10% of people, their annual incomes have more than doubled in the last five years.
The wealthiest 1% in Britain now makes $5.6tr in annual income, while it will make $14.7tr by 2030.
The UK is expected, on average, to have a wealth of £36,000 by 2030 and a median networth of £5.9m.
Those numbers are higher than in countries such as Germany, France, Japan, Australia and the US.
But what about inequality?
It’s possible that inequality could worsen in the US as well, because there is a lot of wealth concentrated at the very top of the distribution.
That could mean that the top 10% will earn about 40% more in the UK by 2030 than they would have in the United States in the current year.
In contrast, the poorest 5% of Americans will earn only 5% more.
Why do we need to know?
These figures should give us an indication of how rich and how poor people are.
Some people are already getting richer.
The richest 1 in 10 Americans now have $5bn (£3.4bn) in assets and $2.7bn in investments, the OECD estimates.
The wealth of people with a college degree is estimated to be $8.2tn.
There is also good news in this year’s report: The median net wealth of Americans has increased by about 20% since 2000, which means there are more people who own wealth than ever before.
Wealthy people are also getting richer in many other countries, like India and Brazil.
This will make the world a much more unequal place.
What is the OECD?
The Organisation for Economic Co-operation and Development ( OECD ), an organisation of more than 150 countries, has developed a wealth index to measure the wealth and income of individuals and families in the OECD countries.
According to the OECD wealth index, the United Kingdom is now in sixth place in terms in terms GDP, behind the US and Germany.
The OECD report, which is based on data from 2011 to 2015