But the hip-hop star was furious, claiming they shorted him around $2 billion.
"It's not a billion," Kanye texted the magazine. "It's $3.3 billion since no one at Forbes knows how to count."
Forbes pointed out how in the past 40 years only two people have ever questioned their net worth before Kanye: Prince Alwaleed bin Talal, a member of the Saudi royal family and President Donald Trump.
After giving "an authentic numeric look into Kanye, Inc," Forbes calculated Kanye's assets based on his Yeezy sneaker collaboration with Adidas, his G.O.O.D. record label and his properties.
But they also factored in his debts, "asset illiquidity," and the magazine's tendency to "look at self-appraisals somewhat sceptically".
Forbes explained why they didn't label the Gold Digger rapper as a billionaire when he graced the cover of the publication last year.
"Without sufficient documentation on his unusual stake, versus just his word and industry guesstimates, we didn't call him a billionaire," Forbes said.
Kanye claimed "he's not a numbers guy," yet appeared obsessed with getting the title of billionaire, according to Forbes.
After the magazine revealed their annual billionaire's list earlier this month, the Yeezy founder texted them over his absence.
"You know what you're doing," Forbes claimed Kanye wrote in a message. "You're toying with me and I'm not finna lye [sic] down and take it anymore in Jesus name."
The writer of the Forbes article, Zack O'Malley Greenburg, also noted humourously that “after months of requests, the hip-hop superstar shared financial records, revealing details about his wildly popular Yeezy sneaker empire — and his fixation on outside validation”.
It comes as Kanye has been ridiculed online for appearing desperate to make the list.
Other news outlets have reported that West “literally sent receipts” and other financial records to make the iconic Forbes Billionaires List.