Because of the roundings, you may not get the exact original price with this calculation.

Ex.:

Original price: 150.08$
T.P.S.:         10.5056$ (rounded to 10.51$)
T.V.Q.:         12.04425$ (rounded <B>up</B> to 12.05$)
Total:          172.64$
(172.64/1.075)/1.07 = 150.08911$ (rounded to 150.09$)

You may want to recalculate the taxes to validate the amount and adjust it if necessary.

HTH

>If you know each of the tax percentages, just divide them from the total price.
>
>you had:
>((150*1.07)*1.075)= 172.54
>
>To get the original price ($150), just divide the taxes from the total:
>((172.54/1.075)/1.07)=150