Forbes’ top-earning YouTuber is a seven-year-old vlogger reviewing toys

Last year, he was No. 8 on Forbes' list, Business Insider reports.

Jack's channel has over 10 billion views and over 20.7 million subscribers.

Forbes measured pre-tax earnings from June 1 2017 to June 1 2018, without fees for agents, managers and lawyers being deducted.

Since the channel was set up by Ryan's parents in March 2015, its videos have had nearly 26 billion views and amassed 17.3 million followers.

Online sensation Jake Paul was second on Forbes' list, with £16.8m.

Asked by NBC why kids liked watching his videos, Ryan - who is now 8 - replied: "Because I'm entertaining and I'm amusing".

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Ryan, who started making the videos at the age of three, makes money from advertising revenue and also recently launched his own Walmart line of branded merchandise.

"Brand partnerships, a clothing line, millions of fans: What was once exclusively the province of superstar athletes and Hollywood A-listers now includes "Markiplier", one of the world's highest-earning YouTubers, who hauled in $ 17.5 million over our 12-month scoring period", Forbes said.

With a new video every day, the little fella unboxes and reviews children's toys and products, and sometimes just has fun with family members. The remaining $1 million from sponsored posts.

Banking $22 million in 2018 - and doubling last year's $11 million haul - this kid proves that you're never too young for a side hustle.

Ryan has become so popular he has now launched his own Ryan's World at more than 2,500 branches of Walmart as well as their website, featuring his own clothing and toys collection [VIDEO].

Take 2018's top earner, Ryan ToysReview, for example. PewDiePie still has the most-subscribed YouTube channel, for now, in earnings despite all that. Makeup artist Jeffree Star, who earned $18 million over the one-year period analyzed, was fifth on the list.