Why grand total between Report>>Sales>>Sales Listing and Report>>Tax Report>>Sales Tax Listing not tally

Q : Why grand total between Report>>Sales>>Sales Listing and Report>>Tax Report>>Sales Tax Listing not tally

A : If your company tax computation by detail tax, you may facing this kind of problem as report sales tax listing is calculated base on detail in order to grouping each tax code transaction value, while report>>sales>>sales listing is calculate base per document so if there is footer rounding adjustment, an amount of rounding adjustment wouldn't calculate into report>>tax report>>sales tax listing.