No, there's no universal rule that the youngest sibling is the richest; wealth distribution among siblings depends on inheritance laws, family agreements, and individual success, but often youngest heirs like Clemente Del Vecchio, Johannes von Baumbach, or Livia Voigt are among the world's youngest billionaires, inheriting vast fortunes. While many youngest siblings benefit from family wealth, older siblings also inherit, and self-made riches can go to anyone, so it's not a guarantee, but the youngest often appear on lists of inherited wealth.
Fueled by AI, prediction markets and online gambling, there are more self-made billionaires under 30 than ever before, 13 up from a previous record of 7.
The wealthiest dynasties in the world have never been richer — and the Waltons lead the pack with a net worth of $513.4 billion.
Eight-year-old Charlotte is the wealthiest royal grandchild and the richest child in the world, with an estimated net worth of £3.9 billion ($5 billion).
The world's 10 richest families
The House of Saud, which is the ruling royal family of Saudi Arabia, is reportedly the wealthiest family of the globe. Surpassing the combined fortunes of high-profile billionaires like Elon Musk, Mukesh Ambani, Adani, Narayana Murthy combined.
Meet the richest young millionaire in Nigeria : Nigerian pre-teen, Muhammed Awal Mustapha, aka Mompha Junior, is being dubbed the 'world's youngest billionaire' at just 10 years old. He's the only son of wealthy internet celebrity, Ismailia Mustapha, aka Mompha Senior.
Taylor Swift's youngest self-made billionaire record broken
Taylor Swift was once the youngest self-made woman billionaire at 35. The new record holder, according to Forbes, is Lucy Guo, 30, the co-founder of Scale AI. Was the U.S. capture of Maduro legal?
Luana Lopes Lara — a 29-year-old former ballerina turned tech founder — has unseated Taylor Swift and Lucy Guo to become the world's youngest self-made female billionaire.
The American business magazine Forbes produces a global list of known U.S. dollar billionaires every year and updates an internet version of this list in real time. The American oil magnate John D. Rockefeller became the world's first confirmed billionaire in 1916.
Rich List 2025: Who are the wealthiest people in the UK?
As of early January 2026, Elon Musk is the #1 richest person in the world, consistently topping lists from Forbes and Bloomberg, primarily due to his stakes in Tesla and SpaceX, with his net worth fluctuating but holding the top spot over figures like Larry Page and Jeff Bezos.
Millionaires by age
Per the Federal Reserve, the average age of a millionaire in the U.S. is 61. Americans in their 50s have an average net worth of around $1.3 million., according to Empower Personal Dashboard data in June 2025.
MrBeast: $2.6 billion (£1.9bn)
Jimmy Donaldson aka MrBeast is the richest Gen Z star by a huge margin. YouTube's most-subscribed creator, the 27-year-old has drawn 457 million followers thanks to his high-stakes challenges, stunts, and headline-grabbing giveaways.
Yes, Kim Kardashian is generally considered richer than Taylor Swift, though both are billionaires, with Kardashian often leading due to her successful businesses like SKIMS, while Swift's wealth comes from music, tours (like The Eras Tour), and films. Recent reports (late 2025) place Kardashian's net worth around $1.9 billion, slightly ahead of Swift's $1.6 billion, though these figures fluctuate.
Did you know that Elon Musk became a millionaire at the age of twenty-seven? 14 years later, at the age of forty-one, he became a billionaire and today, at the age of fifty-four, he's almost a trillionaire.
At age 29, Luana Lopes Lara has just become the youngest self-made woman billionaire on Earth, unseating 31-year-old Scale AI cofounder Lucy Guo who took the title from Taylor Swift in April.
Elon Musk could become the world's first trillionaire, even without the new Tesla pay package. It can be hard to understand Elon Musk's reality—especially as he appears to be on track to become the world's first trillionaire this year.
Elon Musk is the primary person known for having over $300 billion, reaching this milestone multiple times, notably in late 2021 and again in late 2024, driven by the performance of his companies Tesla and SpaceX. While other billionaires like Mark Zuckerberg and Jeff Bezos have approached or crossed $200 billion, Musk is the one consistently linked to the $300 billion mark, making him the richest person in the world at those times.