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                   9434 Points
                   Joined December 2011
                
               
			  
			  
             
            
             To calculate the surcharge on income tax follow these steps. 
1.calculate the basic income tax liability without surcharge. 
2.determine the applicable surcharge rate ex: 10% or 15 %
3.calculate the surcharge amount by multiplying the basic income tax liability by the surcharge rate. 
4.calculate the marginal relief, if applicable  (this reduce the surcharge)
5.add the surcharge amount (after marginal relief) to the basic income tax liability to get the total income tax liability.