We'll still need an alphabet agency. Someone needs to collect the taxes. And verify the forms.
Also, the number of transactions will greatly exceed the number personal/business tax returns. Probably by a factor of 1,000 or more (i.e figure all transactions you do in a year, multiply that by the number of adults and businesses).
What's the plan for the logistics?
Do we eliminate cash/barter/trade transactions?
Do we link all the cash registers and/or credit card terminals to a central processing center? Or is there a separate terminal just for the gov't?
Do the transactions/taxes funnel to separate state agencies, or a single federal agency, which is then responsible for dispersal to state and local governments.
Do the funds automatically get deducted from the business bank accounts? Over what time frame?
Or do the businesses have to file forms and electronically deposit the funds due, like they do with payroll taxes?
Do businesses pay the tax when buying wholesale or do the customers upon resale? Or both?
What about services? Are services subject to consumption taxes? Lawyer services? Doctor's appt? Hospital stays? Car wash? Paying the babysitter?
Lot of questions....
As much as I despise our tax system, a consumption-based system would be worse.
I have three main objections.
One, it is unfair to people who paid high rates under the current system their entire lives and planned on a retirement where they would be lightly taxed. Suddenly, they are goign to shell out another 20-30% fro everything they need.
Two, it would be hideously complex. What triggers the tax? a retail sale only? Or intermediate sales of goods used in manufacturing, etc? Do we really want to encourage vertical integration solely to avoid taxes? The underground economy would mushroom. How woudl the IRS track cash purchases without draconian bank account monitering?
Three and most fundamentally, we coudl easily end up with the worst of both worlds, a retained income tax system plus a national VAT. That is clearly the goal of democrats. It would require a Constitutional amendment banning any future income tax system. That's neither wise nor possible. Careful what you wish for.