Suppose, I have issued an Invoice of PKR 20,000/- with sales tax @ 16% (PKR 3,200) on services which comes total Invoice PKR 23,200/-. 

Now, while the customer paid me the amount 23,200/- after withholding sales tax amount PKR 3,200/- and also withhold Income tax @ 8% on the total inclusive of tax amount of the invoice (23,200/- @ 8% = 1,856) and paid me the net amount 18,144/-. (23,200/- less WHT tax 1,856 and Sales Tax 3,200/- = 18,144/-).

 Can you please assist me that how can I complete this operation in the free app provided by the Odoo (Which I am currently using "Accounting").

Please confirm that how can I complete both set of taxes while receiving payment from customer. Your kind response will be greatly appreciated. Thank You!