Just as any other sales tax.
If you said the truth, according to how we compute sales taxes, 30%, then you would have a greater risk of having the prospect run away from you as fast as he could.
Then you would have to shout "wait you haven't heard about the pre-bates yet!"
The prebate is factored into the rate calculation, just as exempting “necessities” would narrow the base, necessitating an increase in the rate.
When I’ve explained the rate difference to groups, I always start with the $1.00 example I gave you. When I ask what the rate of the tax is, they ALWAYS respond: “23%.” When I explain that if they want to spend $1 on goods and they will have to pay 30 cents in tax, and I ask what the rate is, they ALWAYS respond “30%.” After saying, “But wait a minute, you just told me the rate was 23%!” I launch into a discussion of tax inclusive rates vs. tax exclusive rates.
THERE IS NO INTENT TO DECEIVE, only a genuine desire to provide a valid basis of comparison to the income tax.