15 lines
667 B
ReStructuredText
15 lines
667 B
ReStructuredText
******
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Design
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******
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The module does not reimplement tax formulas. Invoice line helper amounts are
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obtained from ``account.invoice.line._get_taxes`` and classified with the tax
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group codes supplied by ``account_do``. This preserves Tryton's handling of
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fixed, included, compound, dated and rounded taxes.
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All informational tax fields and the line total share one multi-field getter,
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so the core tax result is classified only once per invoice line read.
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The displayed due date is the last maturity date. For posted invoices it is
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read from the payable move lines. For draft invoices it is computed by the
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complete payment term using the invoice amount and currency.
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