ibrahim77m's picture
May 09, 2015
Reputation: 3

Calculate the sales tax after services tax


I'm using the SamboPOS v3 my question is how to add two taxes which is calculated as follow: 


First add the services tax to the total then (total+services tax amount) + sales tax 

I need to get the sales tax after get the sum of the services tax + the total 


thanks in advance 

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