Thomas
Another perspective on this is that in practice what rounding procedure a
bank or other external body may apply may depend on any legislative
requirements (usually by taxation bodies) and their internal accounting
policies and these are not under GnuCash's control and may also vary between
different legal jurisdictions.
It is impossible for GnuCash to know apriori how a particular amount will
be rounded and appear in external statements (hopefully someone is not
skimming off the fractions of cents from the rounding) against which the
GnuCash records will ultimately be reconciled, so no matter what rounding
procedure was used by GnuCash in any internal calculations, it can end up
being wrong because the bank chooses to or is required to round in a
different manner.
David Cousens
It can be MUCH worse than that, because the consequences of legislated
rounding (in filling out filings) may be complicated. Thus for US
non-profits, if they have to file a 990/990EZ this much not only be
"whole dollar" but must match the previous year's filing. But rounded
(A+B) does not necessarily equal rounded A + rounded B. In other words,
there is no way to do this by "formula" as will require human decision
as to what "fudging" will result in minimal distortion << for example,
if use truncate instead of rounding for THIS amount and round up on THAT
one all will work out >>
So some years don't have to fudge any amounts, other years just one or
two, still other years nasty and have to do many.
Same with banks. Some may use one method of rounding, others another.
And sorry, but although many currencies integral to a specific decimal
point they may sometimes use more << like the "mil" seen in tax rates.
water rates, etc. >>
Michael D Novack
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