For true believers in supply-side economics, however, one major flaw of the TCJA is that it did not further cut taxes for the wealthy by reducing capital gains tax rates. But now the Trump Administration is considering using executive action to remedy this by indexing capital gains to inflation for tax purposes.
Even though income derived from capital gains receives a special lower tax rate and is therefore undertaxed, some proponents of lower taxes on the wealthy claim that capital gains are overtaxed due to the effects of inflation. But existing tax breaks for capital gains more than compensate for any problem related to inflation. Congress should repeal or restrict special tax provisions for capital gains rather than creating even more breaks.