You can record a journal voucher for decrease in input tax.
1. Go to Gateway of Tally > Accounting Vouchers > F7: Journal .
Note: You can create a journal voucher from Gateway of Tally > Display > Statutory Reports > VAT > select the VAT or CST form.
2. Click J : Stat Adjustment . In the Stat Adjustment Details screen,
o Select the option VAT in the Type of duty/tax field.
o Select the option Decrease of Input Tax in the Nature of adjustment field.
o Press Enter to save, and return to voucher screen.
3. Debit the CST ledger.
o Enter the Rate and Assessable Value in the VAT Details screen.
o Press Enter to return to voucher screen.
4. Enter the amount in the Debit column.
5. Credit the VAT ledger.
o Enter the Rate and Assessable Value in the VAT Details screen.
o Press Enter to return to the voucher screen.
6. Set the option Provide VAT Details? to Yes and enter the From and To dates, else retain the option as No .
Note: The option Provide VAT Details is provided as per state specific requirements of VAT/CST forms and annexures. In this example, Bihar is selected as the State .
7. Enter Narration , if required. The journal voucher appears as shown below:
   
8. Press Enter to save.
The states with Decrease of Input Tax available as the Nature of Adjustment are given below:
| 
      State Name  | 
    
      Nature of Adjustment  | 
    
      Additional Details  | 
    
      Voucher Entry  | 
   
| 
      Andhra Pradesh  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Assam  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Bihar  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger or ledger grouped under Current Liabilities .  | 
   
| 
      Chandigarh  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Tax Paid on Unsold Stock  | 
    
      Debit: Ledger grouped under Current Assets . Credit: VAT ledger.  | 
   ||
| 
      Chhattisgarh  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Against CST of capital goods  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   ||
| 
      Dadra and Nagar Haveli  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger/ledger grouped under Current Liabilities .  | 
   
| 
      Change in Use of Goods, for Purchase Other Than for Which Credit Allowed  | 
    
      Debit: Purchase ledger. Credit: VAT ledger.  | 
   ||
| 
      Other Adjustments  | 
    
      Debit: Party Ledger. Credit: Purchase Ledger. Credit: VAT ledger.  | 
   ||
| 
      Delhi  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Change in Use of Goods, for Purchase Other Than for Which Credit Allowed  | 
    
      Debit: Purchase ledger. Credit: VAT ledger.  | 
   ||
| 
      Other Adjustments  | 
    
      Debit: Party/expenses ledger. Debit: VAT ledger. Credit: Purchase ledger.  | 
   ||
| 
      Goa  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Set Off Against Excess ITC Under Goa Sales Tax Act  | 
    
      Debit: Expenses ledger. Credit: VAT ledger.  | 
   ||
| 
      Set Off Against Excess ITC Under Goa Tax on Entry of Goods Act  | 
    
      Debit: Expenses ledger. Credit: VAT ledger.  | 
   ||
| 
      Set Off Against Excess ITC Under Goa VAT Act  | 
    
      Debit: Expenses ledger. Credit: VAT ledger.  | 
   ||
| 
      Gujarat  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger. Credit: Additional tax ledger.  | 
   
| 
      Haryana  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Himachal Pradesh  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Tax Paid on Unsold Stock  | 
    
      Debit: Ledger grouped under Current Assets . Credit: VAT ledger.  | 
   ||
| 
      Jammu and Kashmir  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Jharkhand  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Madhya Pradesh  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Maharashtra  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Other Purchase Adjustment  | 
    
      Debit: Expenses ledger. Credit: CST ledger.  | 
   ||
| 
      Other Purchase Adjustment (Capital Assets)  | 
    
      Debit: Expenses ledger. Credit: CST ledger.  | 
   ||
| 
      Odisha  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Credit note issued to buyer (excess VAT in sales)  | 
    
      Debit: Party ledger. Credit: VAT ledger.  | 
   ||
| 
      Puducherry  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Change in Use of Goods, for Purchase Other Than for Which Credit Allowed  | 
    
      Debit: Purchase/expense ledger. Credit: VAT ledger.  | 
   ||
| 
      Other Adjustments  | 
    
      Debit: Party/cash ledger. Credit: Purchase ledger. Credit: VAT ledger.  | 
   ||
| 
      Punjab  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Debit: Surcharge ledger. Credit: VAT ledger. Credit: Surcharge ledger.  | 
   
| 
      Tax not charged by the seller  | 
    
      Debit: VAT ledger. Debit: Surcharge ledger. Credit: VAT ledger. Credit: Surcharge ledger.  | 
   ||
| 
      Tamil Nadu  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Telangana  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Uttarakhand  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger or ledger grouped under Current Liabilities .  | 
   
| 
      Refund Claim  | 
    
      Debit: Refund claim ledger grouped under Current Assets . Credit: VAT ledger.  | 
   ||
| 
      Uttar Pradesh  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      West Bengal  | 
    
      Decrease of Input Tax  | 
    
      Against CST  | 
    
      Debit: CST ledger. Credit: VAT ledger.  | 
   
| 
      Excess Claimed Earlier  | 
    
      Debit: Purchases/expenses ledger. Credit: VAT ledger.  |