The top 1% of high-income households in the US fail to report 20% of their income
https://www.businessinsider.com/irs-tax-evasion-high-income-one-percent-households-new-research-2021-3
"These high-income households avoid paying tax through a number of ways, researchers found, adding to a bevvy of recent insight into wealth secrecy and tax avoidance. One strategy is using tax havens, where super rich individuals keep money in offshore accounts. Such evasion "increases the top 1% income share" in the US, the paper said."
http://gabriel-zucman.eu/files/GLRRZ2021.pdf
Amazon.com: The Panama Papers: Breaking the Story of How the Rich and Powerful Hide Their Money eBook: Obermaier, Frederik, Obermayer, Bastian: Kindle Store
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