Unlike a Memo voucher, this is not a separate voucher type. You can mark an existing voucher (for example, a payment voucher or a receipt voucher) as Optional. Press CTRL + L or click on Optional from the Button Bar. This button toggles between Regular and Optional. By marking a voucher Optional, the voucher does not get posted anywhere but remains in the Optional Voucher Register.
You can make a voucher type Optional to regular, if you need to create a new voucher type or alter an existing voucher type.
Go to Gateway of Tally > Accounts Info > Voucher Types> select a Voucher Type> Set Make Optional as default to Yes.
After enabling this option, any vouchers entered using this particular voucher type will be optional.
Enabling Optional Vouchers
Go to Gateway of Tally
Select F11:F1: Accounting Features
Set Use Rev. Journals & Optional Vouchers? to Yes.
Accept the screen to save.
Use of Optional Vouchers
If you do not want a transaction that is incomplete to affect the accounts, you can mark this as an Optional Voucher. Once the transaction is complete, modify the voucher and post it as a Regular Voucher. For example, Proforma sales invoice. In fact, an optional sales invoice is printed as a Proforma Invoice.
Optional Vouchers allow you to see the impact of transactions without actually posting them.
Optional Vouchers can be used to forecast future sales. For example, create a New Voucher Type - Sales Forecast. Record future sales projections using this voucher type.
Consider an example: it is the 30th of June and you would like to view the Balance Sheet as of today, but June salaries are not due for payment until the first week of July. The Balance Sheet will not be projecting the correct figures. To overcome this, you can enter an Optional Voucher dated 30th June.
Debit Salaries Account
Credit Provisions (Current Liabilities) Account
When you view the Balance Sheet, generate a report with the Optional Voucher included. The Optional Voucher should be already defined as a Scenario (Refer the section on Scenario Management for more details). The voucher affects the report temporarily. Once you quit the report, Tally.ERP 9 does not retain the Scenario details. The next time you view the balance sheet, it will not include the effect of the Optional Voucher unless you include it.
Note: Use Scenarios to see the effect of Optional voucher entries on reports and statements.
Optional Vouchers Register
You can view all optional vouchers in the Optional Vouchers Register
Go to Gateway of Tally > Display > Exception Reports > Optional Vouchers.
Note: You can view Optional Vouchers from the Day Book as well.