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In this instance, no. As an example, let's say I have $100,000 in my IRA, invested in a stock. Under this proposal, I would pay $10.99 to Ameritrade to trade the stock, and $1000 to Uncle Sam.
Let's get real. I wouldn't want to pay even $100, or $10, or $1 to Uncle Sam to trade. It then amounts to a wealth tax, not a sales tax.
Unconscionable. Unthinkable. I would move to Canada or Mexico or France first. And so would a LOT of other investors.
Don't take it personally, but that idea REALLY needs to be re-examined.
Perhaps you are right, the transaction tax would be better for transport etc. But sales tax would work just fine on sales of stock, so the transaction tax would not be necessary. I envision the transaction tax picking up anything the sales tax doesn't catch.