Hey Ikujuni Olatunde 

Thank you for using the community 

May use the web form for the agent  to assist you 

regards 

William

Hi Ikujuni Olatunde

Do the following:

1. On the Invoice transactions screen, go to the View | Options 

2. Decide which options to select between these options marked below. 

3. If the Customer selected on the top of the Invoice is set to be Taxable, then the Transaction Line Tax column will automatically be available.

4. Just ensure the VAT Incl or VAT Excl. and other values are correctly captured and then process the invoice 

Evolution will ensure the correct VAT amount is calculated and posted