The reason behind if the tax is not been calculated in the purchase bill maybe that the particular party is unregistered whose purchase bill is been created.
In order to resolve this issue, the user will follow the below steps:
1. GSTIN: Enter the GSTIN No. of the party.
2. Reg. Date: Enter the registration date of GSTIN
3. PAN No.: Enter the PAN No. of the party.
After following the above steps, the user can view tax will get calculated in the purchase bill.