Hi,

In point_of_sale/static/src/js/model.js , around line 540 :

if (tax.type === "percent") {
                        tmp =  base - round_pr(base / (1 + tax.amount),currency_rounding); 
                    } else if (tax.type === "fixed") {
                        tmp = round_pr(tax.amount * self.get_quantity(),currency_rounding);
                    } else {
                        throw "This type of tax is not supported by the point of sale: " + tax.type;
                    }

Should mean, that the tax type must be percent or fixed, otherwise the function returns the error you got.

If you look closer in the code, you'll see that this applies for included tax or not included tax.

I think you may have created the tax in a bad way, maybe ?

For example a 19,6 % tax should be set like this :

• Tax type = percent
• Value = 0,1960 (%)
• Taxe is included = checked

Best regards

THis hasn't been fixed by odoo 10 or 9 did you ever find a solution for applying Python generated taxes to the POS?

As far as I can tell, taxes must be added in on an item-by-item basis. Create the tax code in Accounting -> Taxes and set what you need. From there, when editing a product for use in your Point of Sale system, go to Accounting tab -> Customer Taxes and add your tax code. When that product is rung up, it will include your tax in the total.