2024年12月23日 星期一 新京报
Individual income taxes accounted for more than half of the total revenue collected by the U.S. government in 2025. At a total of $2.6 trillion, they make up the largest share of government revenue. But income tax hasn’t always played a key role in tax revenue. In fact, it wasn’t even introduced as a concept until about 100 years into the country’s history after President Abraham Lincoln signed the very first federal income tax—a 3% flat tax on incomes exceeding $800—to fund the Civil War. Just as income tax didn’t always exist, it also may not last forever.
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