ITA - Fattura elettronica - Inversione contabile

This module connects supplier e-invoice import with reverse charge (inversione contabile). When an Italian electronic invoice is imported, any line with a 0% VAT rate and a Natura code starting with N6 is automatically marked as reverse charge. For those lines the system looks for a reverse charge configuration marked as used for e-invoice suppliers and applies the matching purchase tax; if none is found, it falls back to any available reverse charge tax.

If at least one line is reverse charge, the bill's fiscal position is set to the one linked to a reverse charge type flagged for e-invoice suppliers.

On the reverse charge type configuration screen (account.rc.type), a new checkbox 'E-invoice suppliers' appears when the method is 'selfinvoice'. It tells Odoo which reverse charge setup to use automatically for imported e-invoices.

When a self-invoice is created from an e-invoice, the original e-invoice attachment is linked back to the reverse charge bill if the names match.

The module also adjusts the amount checks performed during e-invoice import: for bills containing reverse charge lines, the tax amount and total amount are compared with the e-invoice values after removing the tax amount added for reverse charge, so the comparison stays correct.