[GNC] Odd Invoice Total (Rounding Issue Maybe)

[Adrien Monteleone]

Looks like a rounding issue when using inclusive tax.

The latest GnuCash is 4.10. You can get a .deb for it in the Debian 
Archives (see the wiki) or try the Flatpak to see if the issue still exists.

Regards,
Adrien

On 6/3/22 2:07 AM, Jeff wrote:
> Hi Group.
> I am just doing some testing testing with updated versions (to me) of 
> GnuCash.
> 
> I have been using GnuCash for a while on an older machine, it is running 
> 2.6.17 and it is working perfectly, unfortunately the machine it is on 
> is starting to have issues, so am in the process of migrating to a newer 
> machine, and therefore a newer version of GnuCash (finally).
> 
> The issue I'm having is on a specific Invoice the TOTAL shown down the 
> bottom is 1 cent out.  I could understand it if I was doing % discounts 
> etc, but the invoice is very basic, and the total seems to be correct, 
> until the last entry.
> 
> Invoice Details:
> Date      Description      Action     Quantity     Unit Price Discount 
> Type  Discount How  Discount   Tax Subtotal   Tax
> Today    Item 1               Material       1 $1049.00       % 
> <                                        X     $953.64    $95.36
> Today    Item 2               Material       1 $222.00       % 
> <                                        X     $201.82    $20.18
> Today    Item 3               Material       1 $15.00       % 
> <                                        X       $13.64 $1.36
> Today    Item 4               Material       1 $30.00       % 
> <                                        X       $27.27 $2.73
> Today    Item 5               Material       1 $59.15       % 
> <                                        X       $53.77 $5.38
> Today    Item 6               Project         1 $200.00       % 
> <                                        X     $181.82     $18.18
> 
> The Discount Type and Discount How, are just the prepopulated values and 
> are not used as there is no Discount amount.
> 
> The TOTAL at the bottom left of the Invoice entry screen is correct 
> until adding the last entry, where it then shows:  $1,575.16 instead of 
> the expected $1,575.15.
> 
> I have tried adding in the Invoice details to a new Invoice, and using 
> two different versions of GnuCash, both seem to show the same 
> behaviour.  Are there any suggestions as to why this may be happening, 
> and how to fix it?  It is not very comforting that what appears to be a 
> simple Invoice, with not discounts etc, is added up wrong.  If I change 
> the Item 5 entry to $59.14 I correctly get $1,575.14.  But once again 
> changing the Item 5 to $59.15 gives a Total of $1,575.16.
> 
> Tested on
> OS                          GnuCash
> Kubuntu 21.10    3.8, Build ID: 3.8b+(2019-12-29)   Finance::Quote: 
> 1.49        Installed via Package Manager
> Kubuntu 22.04    4.8, Build ID: 4.8a+(2021-09-28)   Finance::Quote: 
> 1.51        Installed via Package Manager