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Fortune
Fortune
Paige Hagy

‘Girl math,’ the TikTok trend where young women justify their spending, isn’t a lifestyle or a delusion—it’s proof that Gen Z is starting to believe ‘money isn’t real’

Woman holding two shopping bags running down the street (Credit: Dulin—Getty Images)

If it’s less than $5 it’s basically free. If you return an item for a refund, you’ve made money. If you paid for a vacation months ago, it’s free by the time you go on it. And if you buy something using cash you found in your pocket, it’s also free. 

That’s the bizarre logic of “girl math,” the latest TikTok trend in which women rationalize their spending in illogical ways. It’s one of dozens of “girl” trends to sweep the internet, but not everyone is laughing this time—some think the trend perpetuates the stereotype that women are irresponsible with their money. What it also seems to show is an emerging attitude, especially among Gen Z and young millennial women embracing the trend, that money is a fabrication, so spending it can always be justified—or, in other words, money isn’t real.

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