The benefits of tax cuts would only really them useful during surpluses.
But that's when they do the least benefit. That might increase inflation more than wanted. Taxes during downturns help in the recovery phase. Deficit spending isn't all bad, and may be necessary in some respects to lessen the effects of recession/depression.
Remember, FDR 'New Deal' had monsterous deficits (even more, as a percentage of GDP than the 80s, 90s, or today). In stagnant growth, deficit could be just what the doctor ordered.
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