v 6.0 v 6.1 Third Party 432
Download for v 6.0
Required Apps Accounting and Financial Management (account)
Technical Name account_invoice_tax_by_column
Also available in version v 6.1
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-Invoice taxes:
TA(l) TaxAmount for line l TBA(l) TaxBaseAmount for line l TA(t) TaxAmount for tax t TBA(t) TaxBaseAmount for tax t
default behaviour:
openerp by default calculates taxes line by line as a function of line tax base amount and then groups these amounts by tax. TA(l) = f(TBA(l) TA(t) = sum( round( TA(l) ) ) /sum on lines l to which tax t is applied
this module behaviour:
In Italy the correct way to compute taxes is to first compute the tax base amount TBA(t) and the compute TA as a function of TBA(t) TBA(t) = sum( TBA(t) ) /sum on lines l to which tax t is applied TA(t) = f( TBA(t) )

the result difference is small but important

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