If you are selling tax-exempt goods or services or if you’re registered for the composite scheme then you should issue a bill of supply instead of an invoice.

– Select customer’s name and under Invoice Type, You will see the option for “Bill Of Supply”

Note: If you want to make “Bill Of Supply” default option in Invoice Type then you can do it from Settings, Document Options > Sale Invoice > Default Invoice Type

-Then you can conutinue creating the bill same as regular sale invoice

– You will see Bill Of Supply title and Declaration when you print your invoice

-If you want to change the Bill of supply Title or Declaration you can do it from the
settings > General options > Additional Setting