Yesterday, the US President Obama announced a new debt plan built on taxes on rich. He called for $1.5 trillion in new taxes on upper income taxpayers. His plan would end Bush-era tax cuts for top earners and would limit their deductions. This proposal is following the public debate on the issue of high-income taxes, launched by the investor Warren Buffet few weeks ago. In the following paper, Toni Mascaró reminds us why this approach to taxes and deficits is wrong.