Hi Mahmoud,
Install Withholding tax of Australia into W1 Version will not work as you have to install Australian Version of Dynamics NAV as
Hannes mentioned before.
Otherwise you can use this workaround to solve withholding tax on W1 Version in Egypt.
Here is the FIRST solution:
Use Invoice Discount Amount as = Withholding Tax Amount on Purchase or Sales Invoice.
From Invoice discount amount you can enter the withholding tax amount, and it will affect the total amount of the invoice.
Taking into consideration that you have to assign the GL Account "Withholding Tax" to the related "Sales Invoice Discount Account" from "General Business Posting Group" on Customer Card.
Advantage & Disadvantage of this solution:
By using this function, you will solve the withholding tax issue, and you will lose using this field as a Discount on total invoice, but you can use instead "Line Discount Amount" on every item line, so you can distribute the Invoice discount on every item line.
Also You will just enter the amount as the calculation will be out of the system, or You can enter Invoice Discount Percentage % and it will calculate automatically.
Second Solution:
On every sales invoice, you can enter G/L Account of Withholding Tax and enter the amount in negative sign.
But on every sales invoice you will enter the G/L Account manually. To solve this recurring process of entering the GL Account, you can use "Sales Code Template" or "Purchase Code Template" and relate the GL Account of Withholding Tax in the sales code template.
You can refer to the whole thread from here.
community.dynamics.com/.../287692
If you find these solutions helpful, Click Yes to Verify the answer to share with other community members and credit me with this solution.