[Koha-bugs] [Bug 2865] New: Acquisitions: GST not calculating correctly.

[bugzilla-daemon at pippin.metavore.com]

http://bugs.koha.org/cgi-bin/bugzilla/show_bug.cgi?id=2865

           Summary: Acquisitions: GST not calculating correctly.
           Product: Koha
           Version: rel_3_0
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P3
         Component: Acquisitions
        AssignedTo: rch at liblime.com
        ReportedBy: jransom at library.org.nz
         QAContact: koha-bugs at lists.koha.org
                CC: jransom at library.org.nz


I have just placed an order for a book in my new Koha 3.0 test site.

The supplier profile is set with list/ordering price and invoice price both
inclusive of GST (12.5%) The supplier gives a 15% discount.

I ordered a book with a List price of $75. 

The amount to be deducted from the budget needs to be exclusive of GST and
discount ie the actual net cost to us of purchasing the item.

So RRP $75 less GST (divided by 1.125) =  a GST exclusive price of $66.66.
Then if we deduct the 15% ($9.99) off the ex-GST price the book is actually
$56.67.

What appears to be happening is that Koha 3.0 then adds GST of 12.5% ($7.08)
back on to the $56.67 to arrive at the $63.75 which is then deducted off the
budget.

This is the wrong amount. It should be $56.67 that is committed from the
budget.




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