Sales Account Invoice is generally used by professionals such as doctors and consultants who require to invoice for certain services provided such as consultancy charges, professional fees.
Trading and manufacturing organisations also use the Account Invoice for invoicing service charges.
On the Sales entry screen, click on Acct Invoice button which is displayed on the Button Bar on the right-hand side of the screen to display the Sales Account Invoice screen as shown.
Tally's Account Invoice mode displays the list of ledger accounts, which can be invoiced as required. This is unlike Item Invoice where Tally displays the list of stock items.
Note: The Acct Invoice button toggles with Item Invoice.