Why did president Johnson raise tax?

President Lyndon B. Johnson raised taxes primarily to fund his ambitious "Great Society" programs, which aimed to combat poverty and racial injustice, as well as to support education, healthcare, and infrastructure. Additionally, the tax increase was intended to address budget deficits and maintain economic stability during a period of rising spending, particularly due to the Vietnam War. The tax policy changes were designed to ensure that the government had sufficient revenue to support these expansive initiatives.