Hi everybody,

I am using the "percentage" mode to do my invoice from my sale order.

Right now I have this:

Sale order price withouth VAT = 1 000 euros. Tax = 210 euros. Total = 12100 euros

With percentage I have for my first Invoice:

Total: 6050 euros , Tax = 0 euros, Withouth VAT =6050  euros

The second Invoice

Total : 6050  euros, Tax = 1210 euros, Without VAT =4840

---QUESTION---

Is it possible to have the VAT not just on the last one but on the first one too?

So to have for both:

TOTAL: 6050 VAT = 1050, Without VAT = 5000

-----CODE--------

I suppose that for it I will have to modify the file sale_make_invoice_advance.py

I will have to change this line ( in order take the unit price without VAT) 

inv_amount = sale.amount_total * wizard.amount / 100

  by   

inv_amount_untaxed = sale.amount_untaxed* wizard.amount / 100

However how can I get the Tax? The code is bellow

            if wizard.advance_payment_method == 'percentage':
                inv_amount = sale.amount_total * wizard.amount / 100
                if not res.get('name'):
                    res['name'] = _("Advance of %s %%") % (wizard.amount)
            else:
                inv_amount = wizard.amount
                if not res.get('name'):
                    #TODO: should find a way to call formatLang() from rml_parse
                    symbol = sale.pricelist_id.currency_id.symbol
                    if sale.pricelist_id.currency_id.position == 'after':
                        res['name'] = _("Advance of %s %s") % (inv_amount, symbol)
                    else:
                        res['name'] = _("Advance of %s %s") % (symbol, inv_amount)
            # determine taxes
            if res.get('invoice_line_tax_id'):
                res['invoice_line_tax_id'] = [(6, 0, res.get('invoice_line_tax_id'))]
            else:
                res['invoice_line_tax_id'] = False

Many thanks for your help and yuor time,

Selverine