I am trying to make an Expense transaction and after adding tax rate it shows only SGST and CGST not IGST?

It is important to first know if the transaction is an Intra State or an Inter-State.

• If the Party is within state i.e Intra-State, it will show SGST and   CGST  .
• If the Party is out of state i.e Inter-State, it will shows IGST.

Then go to Master > Ledger, edit the particular ledger(Party) and change the state as per your requirement.