Vat Calculation

Can anyone help with this? My checkout is not calculation the added 20% VAT currectly as this example shows. Somehow the maths in CS Cart seems to have malfunction and i can see no where to fix this error.

<span>Order summary</span>


	
		
			1 item(s)
		
			<span>£<span>34<sup>95</sup></span></span>
	
	
		
			Shipping
		
			<span>£<span>4<sup>50</sup></span></span>
	
	
		
			Taxes
		
			 
	
	
		
			<div>VAT (20%)</div>
		
		
			<span>£<span>0<sup>90</sup></span></span>

seems like vat is only being calculated on the shipping.

Have you got tax added to the product nod not tax free