• More states are enacting the ‘flat tax’
• A single-rate income tax means everyone pays at the same rate
• Critics say it lets the rich of the hook — again

With President Joe Biden proposing to force billionaires to shoulder higher income tax burdens, more states have been employing a handy old idea to head in the opposite direction.

They have embraced the flat tax or flat-rate tax as a single-tier system is known. It is hailed by many GOP governors and legislatures as a way to promote what they perceive as greater fairness for all taxpayers and to attract business to their states.