By default in Tally.ERP 9, there are 18 different pre-defined Voucher types (where Payroll feature is enabled, the number of pre-defined voucher types will be 20). Voucher type pertains to Accounting, Inventory and Payroll. These are used for recording various transactions according to the user needs.
Examples include Cash Payment Vouchers and Bank Payment vouchers where the relevant predefined voucher is Payment Voucher. You may have two or more sets of Sales Vouchers for different kinds of sales transactions e.g. Credit Sales, Cash Sales, etc.
If a voucher type is created, you can:
Have the different Voucher numbering methods.
Give own prefix and suffix details for the voucher numbering.
Use the Effective Dates for the vouchers.
By default, make some vouchers optional if required.
Decide to have the Common Narration or Narration for each entry.
Automate the printing immediately after saving the vouchers.
Get separate reports for each type of voucher.
More :
Pre-defined Voucher Types in Tally.ERP 9
Creating a Voucher Type with Advanced Configuration