President Joe Biden’s Twitter account posted a questionable statistic on Saturday about how much tax American billionaires pay.

“Look, I think you should be able to be a billionaire if you can earn it, but just pay your fair share,” Biden’s tweet read. “I think you ought to pay a minimum tax of 25%. It’s about basic fairness.”

The tweet included a graphic of a Biden quote that said: “You know the average tax billionaires pay? Three percent. No billionaire should be paying a lower tax than somebody working as a schoolteacher or a firefighter.”