[Your Nightmare]

But what's the inclusive payment?

The amount listed in the receipt for "price inclusive of tax."

You're clueless...

How do you figure the "amount listed in the receipt for 'price inclusive of tax'"?

[ancient_geezer]

How do you figure the "amount listed in the receipt for 'price inclusive of tax'"?

As a seller, rather easily actually, simply divide the amount I intend to retain for my business by (1-NRSTrate). The result is the NRST "price inclusive of tax".

As a purchaser wanting to check the amount of NRST listed, multiply the NRSTrate times the "price inclusive of tax."

No problem at all, unless you happen to be arithmetically challenged and don't know how to use a $2 pocket calculator.