Below is an example of how you can handle packaging tax in Uniconta.
Read this article that describes the setup of tax groups and shows an example of handling bottle deposits: Tax groups
Then you create your tax, in this case a packaging tax.
Notes: If you want to run inventory on your taxes, the tax must be created as a product type: Product. Normally, however, you use the product type: Services, for a tax.
Cost Price and Selling Price are the same amount, as no profit is made on a tax.
If you sell a tax as a whole unit, simply set Decimals to 0.
If you sell a tax as a split unit, e.g. 0.50, set Decimals to 2.
Cost model is set to Fixed cost.
This tax is created as a Service and must also be checked in "Item included in BOM".
Then you need to assemble your BOM. You do this from the item overview. Select the item that you want to be the main BOM and select BOMs and Contents.
In the Parts list tab, you add your item, in this case our packaging. You set the quantity to be included in this item and in order to show the item on the invoice and include the sales price, the fields "Include sales price" and "Show on invoice" must be checked.
The result of the invoice can be seen below.
In the BOM tab, you add the item, in this case our packaging, to be included in the BOM. You set the quantity to be included in this item, and in this case it should be 0.38, and the sales value and cost value are calculated on the line. In order to show the item on the invoice and include the sales price, the "Include sales price" and "Show on invoice" fields must be checked.
Note: Remember decimals on the item, otherwise it is only possible to deliver full quantities.
The result of the invoice can be seen below.