In WA sales tax only applies to retail sales. Which means a revenue tax and a retail sales tax are not equivalent.

For example, if a home builder is buying lumber directly from a wholesaler, they aren’t paying a sales tax. Whereas the revenue tax does catch a portion of that income.

Maybe you mean we should broaden the concept of sales tax, and apply it to all transactions? That would be closer to equivalent to a revenue based tax structure, and would probably end up looking very similar to the VAT tax structure in Europe.

I’m fine with a VAT tax, if we want to structure things that way. Honestly it’s a lot more paperwork to manage that way instead of revenue, but either works for me.

Assuming arguendo that a sales and revenue tax were equivalent, a revenue tax would be the much simpler way to manage tax collection. Why would you ever prefer a structure that creates a tax event for every transaction, to an equivalent one that creates a single tax event per business entity?

Yes, conventional sales taxes apply to the final retail sale. But in your example, a home builder buying lumber does pay sales taxes, since there is no sales tax on the sale of the finished home (at least not in my state).

All taxes are ultimately paid by the consumer. In that regard, I agree just impose a national sales tax, get rid of everything else, and be done with it. Gets rid of all the complexity and games played with income taxes.

Give everyone an automatic refund of $X to make it non-regressive. This could be done as a monthly payment, an "advance refundable tax credit" like the stimulous payments.