In 2024, KSI made the "UK's Richest Gamers" list with an estimated £50M.
Even more recently, in 2025, the Watford Observer (a local paper from KSI's hometown) claimed he was worth £81M.
He is probably worth around £70M ($95M), mainly driven by his co-founding of Prime energy drink.
KSI's net worth is very likely to be between $90M - $110M USD, based on the two most recent estimates made by publications from his own country.
The Times provided an estimate on the lower end at £50M ($70M USD) in 2024, while the Watford Observer more recently predicted KSI to be worth £81M ($110M USD).
The higher figure is probably closer to the truth, since it is both more recent and takes into account the recent earnings of Prime energy drink, KSI's largest single revenue stream.
Who is KSI?
KSI, born Olajide Olatunji, started out doing FIFA commentary videos and vlogs as a teenager. He quickly became one of the biggest names on YouTube, especially in the UK.
But he really blew up in the mid-2010s as the central member of the Sidemen, a hugely popular group known for their challenge videos.
He's now tried thousands of ventures outside of YouTube, including a successful boxing career, fighting Logan Paul twice. But KSI's real wealth comes from another project he started with Logan Paul...
In 2022, KSI co-founded Prime energy drink, and it completely exploded. Although his exact share of the business is unknown, Prime made over $1.2 billion in 2023, and is still going strong.
Source
Estimated Monthly Income
Prime (Energy Drink)
$2M – $4M
YouTube
$250,000 - $400,000
Live Events (Music & Boxing)
$200,000 - $300,000
Total Estimated Monthly Income
$2.45M – $4.7M
Prime (Energy Drink)
KSI co-founded Prime with Logan Paul in early 2022, and the brand became an instant hit.
From flying off the shelves at supermarkets to being resold online for ridiculous prices (seriously, if you bought a bottle of Prime on eBay, you should be ashamed of yourself). And it made both YouTubers a huge amount of revenue.
By 2023, it had generated over $1.2 billion in sales, and while growth slowed significantly in 2024, the drink is still sold globally. Even without hype, Prime has established itself as one of the tier-two players behind Red Bull and Monster.
YouTube
In 2023, the Daily Mail reported that KSI was making $4.5M from YouTube annually, which is $375k monthly. However, it is likely that he now earns less than this from YouTube.
KSI is still massively successful on YouTube, however, with his time divided by so many ventures he has been uploading less regularly. As a result, his subscriber count has plateaued, hovering around 16M on his main account and 25M on his music account.
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Live Events (Music & Boxing)
KSI's boxing matches, especially against Logan Paul and FaZe Temperrr, as well as his music tours and festival appearances, have brought in substantial one-off payments. And although the boxing seems to have basically wrapped up, KSI still regularly performs his music.
Obviously, the paydays are less frequent than YouTube uploads or Prime sales, but these events still contribute millions to his total net worth. He plays at the
