I tested this in my Test Company.
 
AM-C add new GL act "9100" call it a "L" for Liability
SM-C add "TAX", click on Item Class GL at bottom, click add "TAX" (the one you just created), put "9100" in all the GL areas so it doesn't default to normal GL's.
IN-B add "TAX", Class: "TAX" and put N to Taxable?, save.
 
In the SO make sure the item still says N to Taxable? (Remember in Customer Master file tax is generally setup already setup) otherwise you will tax twice.
Release SO and Invoice out.  Post to the GL and run GL-E for act "9100" and it should be there as a credit as it is a liability to be paid out to the state.
 
Doing it this way it will not show up in the AR-K report or transfer in the AR-L, so when you have to remit the tax to gov't you will have to run GL-E every time to get an accurate $ due.