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What Is a Voucher in Accounting? Types, Journal Entries & Format

Quick Summary

  • A voucher is the source document for every accounting entry
  • India has 10 voucher types: Payment, Receipt, Purchase, Sales, Journal, Contra, Debit Note, Credit Note, Petty Cash, Stock Journal
  • Every voucher records a debit and a credit (double-entry system)
  • Vouchers ≠ Invoices.  Invoices are external; vouchers are internal
  • Gift vouchers attract zero GST at the time of issuance (CBIC Circular 243/2024)

A voucher in accounting is a written document that records and authorises a financial transaction. Before a transaction is posted in the books, whether it relates to rent paid, customer money received, or stock moved between godowns, it should be supported by a proper voucher. This guide explains the main types of accounting vouchers, their journal entries, the standard voucher format, the difference between vouchers and invoices, GST rules for gift vouchers, and how to create vouchers in BUSY accounting software.

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What Is a Voucher in Accounting?

A voucher is a written document that records, supports, and authorises a financial transaction in the books of account . Every ledger entry should be backed by a voucher, whether it is a payment to a supplier, a receipt from a customer, or a year-end adjustment such as depreciation.

A voucher usually answers four basic questions. What was the transaction? Who was involved? When did it happen? Who checked and approved it? Because of this, vouchers are an important part of proper bookkeeping and financial control.

In practice, a voucher is normally supported by other documents such as bills, receipts, invoices, bank advice, or internal approval notes. No transaction should be entered in the books unless it is backed by a correctly prepared and authorised voucher.

What Are the Key Benefits of Vouchers?

Proof of Every Transaction

A voucher acts as documentary proof that a transaction took place. If a business needs to explain why money was paid, received, or adjusted in the books, the voucher and its supporting document provide the answer.

Better Audit Trail

Pre-numbered vouchers create a clear sequence of records. This helps auditors trace any ledger entry back to the original transaction. Companies are also expected to keep proper supporting records for transactions under the Companies Act, 2013.

Better Internal Control and Fraud Prevention

Vouchers help create a checking process within the business. In many cases, one person prepares the voucher, and another person approves it. This reduces the risk of unauthorised payments or unsupported entries.

GST and Tax Compliance

For GST-registered businesses , vouchers support proper accounting and tax records. For example, purchase vouchers backed by valid GST invoices help support Input Tax Credit claims , subject to the conditions of the CGST Act, 2017.

Easier Payment Processing

A voucher can also simplify accounting work. One payment voucher may cover several invoices, making the payment process easier and reducing unnecessary duplication in records.

Types of Accounting Vouchers with Journal Entries

1. Payment Voucher

A payment voucher records every outflow of money from the business, whether paid in cash or through the bank. It is often called a debit voucher because the relevant expense, liability, or asset account is debited.

Payment vouchers are commonly used for rent, salaries, utility bills, supplier payments, loan repayments, and professional fees.

There are two common types of payment vouchers. A cash payment voucher is used when payment is made in cash. A bank payment voucher is used when payment is made by cheque, NEFT, RTGS, or UPI.

Journal Entry Example - Rent Paid by Cheque

Account Debit (Rs.) Credit (Rs.)
Rent A/c 25,000 -
To HDFC Bank A/c - 25,000

(Being office rent for March 2026 paid by cheque no. 004521)

Account Rent A/c
Debit (Rs.) 25,000
Credit (Rs.) -
Account To HDFC Bank A/c
Debit (Rs.) -
Credit (Rs.) 25,000

Journal Entry Example - Salary Paid in Cash

Account Debit (Rs.) Credit (Rs.)
Salary A/c 18,000 -
To Cash A/c - 18,000

(Being salary paid to Ramesh Kumar for March 2026)

Account Salary A/c
Debit (Rs.) 18,000
Credit (Rs.) -
Account To Cash A/c
Debit (Rs.) -
Credit (Rs.) 18,000

2. Receipt Voucher

A receipt voucher records every inflow of money into the business. It is the opposite of a payment voucher and is also called a credit voucher.

Receipt vouchers are commonly used for customer payments, advance receipts, rental income, and interest received.

A cash receipt voucher is used when cash is received. A bank receipt voucher is used when money is received by cheque, demand draft, NEFT, RTGS, or UPI.

Journal Entry Example - Customer Pays by Bank Transfer

Account Debit (Rs.) Credit (Rs.)
SBI Bank A/c 1,20,000 -
To Priya Traders A/c - 1,20,000

(Being payment received from Priya Traders against Invoice No. ST/2026/112)

Account SBI Bank A/c
Debit (Rs.) 1,20,000
Credit (Rs.) -
Account To Priya Traders A/c
Debit (Rs.) -
Credit (Rs.) 1,20,000

3. Purchase Voucher

A purchase voucher records the purchase of goods or services, whether for cash or on credit. It is one of the most commonly used vouchers in trading, manufacturing, and retail businesses.

Purchase vouchers are used when buying raw materials, finished goods, consumables, machinery, or services.

Journal Entry Example - Goods Purchased on Credit

Account Debit (Rs.) Credit (Rs.)
Purchase A/c 85,000 -
IGST Input A/c 15,300 -
To Sharma Textiles A/c - 1,00,300

(Being 100 kg of fabric purchased from Sharma Textiles at 18% IGST on credit)

Account Purchase A/c
Debit (Rs.) 85,000
Credit (Rs.) -
Account IGST Input A/c
Debit (Rs.) 15,300
Credit (Rs.) -
Account To Sharma Textiles A/c
Debit (Rs.) -
Credit (Rs.) 1,00,300

Journal Entry Example - Goods Purchased for Cash

Account Debit (Rs.) Credit (Rs.)
Purchase A/c 12,000 -
To Cash A/c - 12,000

(Being stationery purchased for cash)

Note: Input Tax Credit can be claimed on a purchase voucher only when the purchase is supported by a valid GST invoice, the goods or services are used for business purposes, and other legal conditions are met. Certain purchases are blocked under Section 17(5) of the CGST Act.

Account Purchase A/c
Debit (Rs.) 12,000
Credit (Rs.) -
Account To Cash A/c
Debit (Rs.) -
Credit (Rs.) 12,000

4. Sales Voucher

A sales voucher records the sale of goods or services, whether for cash or on credit. It is prepared when the business makes a sale and usually goes along with the invoice.

Sales vouchers are used for cash sales, credit sales, and service income.

Journal Entry Example - Goods Sold on Credit

Account Debit (Rs.) Credit (Rs.)
Rahul Electronics A/c 59,000 -
To Sales A/c - 50,000
To CGST Output A/c - 4,500
To SGST Output A/c - 4,500

(Being LED panels sold to Rahul Electronics at 18% GST on Invoice No. SE/2026/045)

Account Rahul Electronics A/c
Debit (Rs.) 59,000
Credit (Rs.) -
Account To Sales A/c
Debit (Rs.) -
Credit (Rs.) 50,000
Account To CGST Output A/c
Debit (Rs.) -
Credit (Rs.) 4,500
Account To SGST Output A/c
Debit (Rs.) -
Credit (Rs.) 4,500

Journal Entry Example - Cash Sale

Account Debit (Rs.) Credit (Rs.)
Cash A/c 11,800 -
To Sales A/c - 10,000
To CGST Output A/c - 900
To SGST Output A/c - 900

(Being goods sold for cash at 18% GST)

Account Cash A/c
Debit (Rs.) 11,800
Credit (Rs.) -
Account To Sales A/c
Debit (Rs.) -
Credit (Rs.) 10,000
Account To CGST Output A/c
Debit (Rs.) -
Credit (Rs.) 900
Account To SGST Output A/c
Debit (Rs.) -
Credit (Rs.) 900

5. Journal Voucher

A journal voucher records non-cash and adjustment entries. It is used when no cash or bank is involved directly in the transaction.

Journal vouchers are commonly used for depreciation , provisions, year-end adjustments, GST set-off, opening balances, and correction entries.

Journal Entry Example - Depreciation

Account Debit (Rs.) Credit (Rs.)
Depreciation A/c 12,000 -
To Machinery A/c - 12,000

(Being depreciation charged on machinery at 10% p.a. for FY 2025-26)

Account Depreciation A/c
Debit (Rs.) 12,000
Credit (Rs.) -
Account To Machinery A/c
Debit (Rs.) -
Credit (Rs.) 12,000

Journal Entry Example - GST Set-Off

Account Debit (Rs.) Credit (Rs.)
IGST Output A/c 18,000 -
To IGST Input A/c - 18,000

(Being IGST input tax credit set off against IGST liability for March 2026)

Account IGST Output A/c
Debit (Rs.) 18,000
Credit (Rs.) -
Account To IGST Input A/c
Debit (Rs.) -
Credit (Rs.) 18,000

6. Contra Voucher

A contra voucher records internal transfers between the business's own cash and bank accounts. It does not involve any outside party.

It is used when cash is deposited into the bank, cash is withdrawn from the bank, or money is transferred between the business's own bank accounts.

A contra voucher should not be used when an external party is involved. In that case, a payment voucher or receipt voucher is used instead.

Journal Entry Example - Cash Deposited into Bank

Account Debit (Rs.) Credit (Rs.)
Axis Bank A/c 50,000 -
To Cash A/c - 50,000

(Being cash collected from shop counter deposited into Axis Bank on 20-Mar-2026)

Account Axis Bank A/c
Debit (Rs.) 50,000
Credit (Rs.) -
Account To Cash A/c
Debit (Rs.) -
Credit (Rs.) 50,000

Journal Entry Example - Cash Withdrawn from Bank

Account Debit (Rs.) Credit (Rs.)
Cash A/c 10,000 -
To SBI Bank A/c - 10,000

(Being cash withdrawn from SBI for office petty expenses)

Account Cash A/c
Debit (Rs.) 10,000
Credit (Rs.) -
Account To SBI Bank A/c
Debit (Rs.) -
Credit (Rs.) 10,000

7. Debit Note Voucher

A debit note voucher is generally used from the buyer's side when goods are returned to the supplier or when the supplier has charged more than agreed.

It is important not to confuse a debit note with a debit voucher. A debit note is a formal return or adjustment document, while a debit voucher is simply another name sometimes used for a payment voucher.

Journal Entry Example - Goods Returned to Supplier

Account Debit (Rs.) Credit (Rs.)
Sharma Textiles A/c 11,800 -
To Purchase Return A/c - 10,000
To IGST Input A/c - 1,800

(Being 10 kg defective fabric returned to Sharma Textiles, Debit Note No. DN/2026/008)

In GST terms, a purchase return may affect Input Tax Credit depending on the nature of the transaction and documentation.

Account Sharma Textiles A/c
Debit (Rs.) 11,800
Credit (Rs.) -
Account To Purchase Return A/c
Debit (Rs.) -
Credit (Rs.) 10,000
Account To IGST Input A/c
Debit (Rs.) -
Credit (Rs.) 1,800

8. Credit Note Voucher

A credit note voucher is used from the seller's side when goods are returned by the customer, when there is a post-sale discount, or when a downward price revision is made after the sale.

Journal Entry Example - Goods Returned by Customer

Account Debit (Rs.) Credit (Rs.)
Sales Return A/c 5,000 -
CGST Output A/c 450 -
SGST Output A/c 450 -
To Rahul Electronics A/c - 5,900

(Being goods returned by Rahul Electronics, Credit Note No. CN/2026/003 issued)

Under GST, credit notes must be issued within the time limits prescribed by law and reported correctly in GSTR-1.

Account Sales Return A/c
Debit (Rs.) 5,000
Credit (Rs.) -
Account CGST Output A/c
Debit (Rs.) 450
Credit (Rs.) -
Account SGST Output A/c
Debit (Rs.) 450
Credit (Rs.) -
Account To Rahul Electronics A/c
Debit (Rs.) -
Credit (Rs.) 5,900

9. Petty Cash Voucher

A petty cash voucher records small routine cash expenses that are too minor for normal payment processing. These may include tea, stationery, courier charges, local travel, or cleaning items.

Petty cash vouchers are usually maintained by the petty cashier and recorded in a petty cash book.

Journal Entry Example - Tea and Stationery

Account Debit (Rs.) Credit (Rs.)
Office Expenses A/c 350 -
To Petty Cash A/c - 350

(Being tea Rs. 150 and stationery Rs. 200 purchased from petty cash on 18-Mar-2026)

Many businesses use the imprest system for petty cash. Under this system, a fixed amount is given to the petty cashier and restored whenever it runs low.

Account Office Expenses A/c
Debit (Rs.) 350
Credit (Rs.) -
Account To Petty Cash A/c
Debit (Rs.) -
Credit (Rs.) 350

10. Stock Journal Voucher

A stock journal voucher records the movement of goods within the business where no direct cash or bank transaction takes place. It is mainly used by manufacturers, traders with multiple godowns, and businesses handling inventory transfers or stock adjustments.

It may be used for stock transfers between locations, delivery before invoicing, receipt before invoice entry, or adjustments after physical stock count.

Journal Entry Example - Transfer Between Godowns

Account Debit (Rs.) Credit (Rs.)
Delhi Godown Stock 30,000 -
To Mumbai Godown Stock - 30,000

(Being 500 units transferred from Mumbai to Delhi godown on 19-Mar-2026)

Account Delhi Godown Stock
Debit (Rs.) 30,000
Credit (Rs.) -
Account To Mumbai Godown Stock
Debit (Rs.) -
Credit (Rs.) 30,000

Comparison of Different Types of Vouchers

Voucher Type Also Called Cash/Bank Involved? Used For BUSY Software Path
Payment Debit Voucher Yes All outgoing payments Transactions -> Payment
Receipt Credit Voucher Yes All incoming payments Transactions -> Receipt
Purchase - Cash or Credit Buying goods/services Transactions -> Purchase
Sales - Cash or Credit Selling goods/services Transactions -> Sales
Journal Non-Cash Voucher No Adjustments, depreciation, provisions Transactions -> Journal
Contra - Yes, internal only Cash to bank or bank to cash transfer Transactions -> Contra
Debit Note Purchase Return No direct cash entry Goods returned to supplier Transactions -> Debit Note
Credit Note Sales Return No direct cash entry Goods returned by customer Transactions -> Credit Note
Petty Cash - Cash only Small daily expenses Transactions -> Payment
Stock Journal Inventory Voucher No Goods movement and stock transfer Inventory -> Stock Journal
Voucher Type Payment
Also Called Debit Voucher
Cash/Bank Involved? Yes
Used For All outgoing payments
BUSY Software Path Transactions -> Payment
Voucher Type Receipt
Also Called Credit Voucher
Cash/Bank Involved? Yes
Used For All incoming payments
BUSY Software Path Transactions -> Receipt
Voucher Type Purchase
Also Called -
Cash/Bank Involved? Cash or Credit
Used For Buying goods/services
BUSY Software Path Transactions -> Purchase
Voucher Type Sales
Also Called -
Cash/Bank Involved? Cash or Credit
Used For Selling goods/services
BUSY Software Path Transactions -> Sales
Voucher Type Journal
Also Called Non-Cash Voucher
Cash/Bank Involved? No
Used For Adjustments, depreciation, provisions
BUSY Software Path Transactions -> Journal
Voucher Type Contra
Also Called -
Cash/Bank Involved? Yes, internal only
Used For Cash to bank or bank to cash transfer
BUSY Software Path Transactions -> Contra
Voucher Type Debit Note
Also Called Purchase Return
Cash/Bank Involved? No direct cash entry
Used For Goods returned to supplier
BUSY Software Path Transactions -> Debit Note
Voucher Type Credit Note
Also Called Sales Return
Cash/Bank Involved? No direct cash entry
Used For Goods returned by customer
BUSY Software Path Transactions -> Credit Note
Voucher Type Petty Cash
Also Called -
Cash/Bank Involved? Cash only
Used For Small daily expenses
BUSY Software Path Transactions -> Payment
Voucher Type Stock Journal
Also Called Inventory Voucher
Cash/Bank Involved? No
Used For Goods movement and stock transfer
BUSY Software Path Inventory -> Stock Journal

Standard Voucher Format for Indian Businesses

A standard accounting voucher in India should include all the essential details required for accounting, auditing, and verification.

Sample Payment Voucher Format

Field Example
Company Name Sunshine Trading Pvt. Ltd.
Voucher Type Payment Voucher
Voucher No. PV/2025-26/0247
Date 19-March-2026
Mode of Payment Bank - HDFC A/c No. XXXX1234
Account Debited Rent A/c
Amount (Rs.) 25,000
Account Credited HDFC Bank A/c
Cheque / UTR No. Cheque No. 004521
Narration Office rent for March 2026 paid to landlord Ravi Kumar
Supporting Document Rent Invoice No. RK/2026/03
Prepared By Accountant
Checked By Senior Accountant
Authorised By Director / Owner

There are three simple rules for voucher preparation:
1. Do not leave the narration blank.
2. Attach the supporting bill, receipt, or invoice.
3. Use a proper serial number for each voucher type in each financial year.

Field Company Name
Example Sunshine Trading Pvt. Ltd.
Field Voucher Type
Example Payment Voucher
Field Voucher No.
Example PV/2025-26/0247
Field Date
Example 19-March-2026
Field Mode of Payment
Example Bank - HDFC A/c No. XXXX1234
Field Account Debited
Example Rent A/c
Field Amount (Rs.)
Example 25,000
Field Account Credited
Example HDFC Bank A/c
Field Cheque / UTR No.
Example Cheque No. 004521
Field Narration
Example Office rent for March 2026 paid to landlord Ravi Kumar
Field Supporting Document
Example Rent Invoice No. RK/2026/03
Field Prepared By
Example Accountant
Field Checked By
Example Senior Accountant
Field Authorised By
Example Director / Owner

Difference Between Voucher and Invoice

Many business owners, especially those new to accounting, confuse vouchers with invoices. However, they are different documents and serve different purposes.

Feature Voucher Invoice
Nature Internal document External document
Created by Accounts department/business Seller/supplier
Direction Stays within the business Sent to customer or buyer
Purpose Records and authorises accounting entry Requests or proves payment
GST Role Not usually the main legal GST document Must follow GST invoicing rules
When Created At the time of accounting entry At the time of supply
Sequence Invoice may be received first, then voucher prepared Invoice is issued first
Legal Importance Important for internal records and audit Mandatory where GST invoicing rules apply
Feature Nature
Voucher Internal document
Invoice External document
Feature Created by
Voucher Accounts department/business
Invoice Seller/supplier
Feature Direction
Voucher Stays within the business
Invoice Sent to customer or buyer
Feature Purpose
Voucher Records and authorises accounting entry
Invoice Requests or proves payment
Feature GST Role
Voucher Not usually the main legal GST document
Invoice Must follow GST invoicing rules
Feature When Created
Voucher At the time of accounting entry
Invoice At the time of supply
Feature Sequence
Voucher Invoice may be received first, then voucher prepared
Invoice Invoice is issued first
Feature Legal Importance
Voucher Important for internal records and audit
Invoice Mandatory where GST invoicing rules apply

How to Correct a Wrong Voucher Entry

Mistakes in voucher entry can happen. An incorrect amount, an incorrect ledger , or missing narration should be corrected carefully.

If the books are still open and not finalised, the voucher can be altered directly in BUSY.

If the books are already finalised, the original voucher should not be deleted. Instead, a reversal entry should be passed and then the correct entry should be recorded.

Original Wrong Entry

Account Debit (Rs.) Credit (Rs.)
Stationery A/c 5,000 -
To Cash A/c - 5,000

(Wrong entry: Rs. 5,000 entered instead of Rs. 500)

Account Stationery A/c
Debit (Rs.) 5,000
Credit (Rs.) -
Account To Cash A/c
Debit (Rs.) -
Credit (Rs.) 5,000

Reversal Entry

Account Debit (Rs.) Credit (Rs.)
Cash A/c 5,000 -
To Stationery A/c - 5,000

(Reversing incorrect entry, Ref. PV/2025-26/0231)

Account Cash A/c
Debit (Rs.) 5,000
Credit (Rs.) -
Account To Stationery A/c
Debit (Rs.) -
Credit (Rs.) 5,000

Correct Entry

Account Debit (Rs.) Credit (Rs.)
Stationery A/c 500 -
To Cash A/c - 500

(Correct entry for stationery purchased for Rs. 500)

Account Stationery A/c
Debit (Rs.) 500
Credit (Rs.) -
Account To Cash A/c
Debit (Rs.) -
Credit (Rs.) 500

GST on Gift Vouchers (2024-25 Update)

Many businesses want to know whether GST applies to gift vouchers. The current position was clarified by CBIC Circular No. 243/37/2024-GST dated 31 December 2024.

According to the circular, gift vouchers and gift cards are not subject to GST at the time of issue. They are treated as payment instruments, not as goods or services, at that stage.

GST applies when the voucher is redeemed for the underlying goods or services. If a distributor works on commission, GST may apply to the commission earned.

GST Treatment Summary

Scenario GST Applicable?
Issue of gift voucher No
Redemption of voucher for goods/services Yes, on underlying supply
Distribution on principal-to-principal basis No GST on margin
Distribution on commission basis Yes, on commission
Expired or unredeemed vouchers Generally no GST
Scenario Issue of gift voucher
GST Applicable? No
Scenario Redemption of voucher for goods/services
GST Applicable? Yes, on underlying supply
Scenario Distribution on principal-to-principal basis
GST Applicable? No GST on margin
Scenario Distribution on commission basis
GST Applicable? Yes, on commission
Scenario Expired or unredeemed vouchers
GST Applicable? Generally no GST

Accounting Entry When a Gift Voucher Is Issued

Account Debit (Rs.) Credit (Rs.)
Cash / Bank A/c 500 -
To Gift Voucher Liability A/c - 500

(Being a Diwali gift voucher of Rs. 500 issued, no GST at this stage)

Account Cash / Bank A/c
Debit (Rs.) 500
Credit (Rs.) -
Account To Gift Voucher Liability A/c
Debit (Rs.) -
Credit (Rs.) 500

When the Gift Voucher Is Redeemed

Account Debit (Rs.) Credit (Rs.)
Gift Voucher Liability A/c 500 -
Cash A/c 90 -
To Sales A/c - 500
To CGST Output A/c - 45
To SGST Output A/c - 45

(Being a gift voucher redeemed for goods worth Rs. 500 with 18% GST)

Account Gift Voucher Liability A/c
Debit (Rs.) 500
Credit (Rs.) -
Account Cash A/c
Debit (Rs.) 90
Credit (Rs.) -
Account To Sales A/c
Debit (Rs.) -
Credit (Rs.) 500
Account To CGST Output A/c
Debit (Rs.) -
Credit (Rs.) 45
Account To SGST Output A/c
Debit (Rs.) -
Credit (Rs.) 45

Conclusion

The main types of accounting vouchers cover the key transactions a business handles every day. These include money received, money paid, purchases, sales, internal transfers, adjustments, returns, petty cash expenses, and stock movement. Each voucher type has a specific role and helps keep the books accurate and balanced.

For Indian businesses, BUSY accounting software supports all 10 voucher types within a single system. It helps with GST-ready entries, automatic voucher numbering, e-invoice support , and easy printing, making records more organised and easier to review.

Frequently Asked Questions

How many types of vouchers are there in accounting?

There are 10 main types of accounting vouchers commonly used in India: Payment, Receipt, Purchase, Sales, Journal, Contra, Debit Note, Credit Note, Petty Cash, and Stock Journal.

Which voucher is used when cash is deposited into a bank account?

A contra voucher is used when cash is deposited into a bank account or withdrawn from it, because it records an internal transfer between cash and the bank.

What is the difference between a payment voucher and a purchase voucher?

A payment voucher records the outflow of money. A purchase voucher records the purchase of goods or services, whether on credit or for cash. A purchase can happen without immediate payment, but the actual payment is recorded through a payment voucher.

What is the difference between a debit note and a debit voucher?

A debit note is usually used for purchase returns or supplier-related adjustments. A debit voucher is another term sometimes used for a payment voucher. They are not the same.

Is GST applicable on gift vouchers in India?

Gift vouchers do not attract GST at the time of issue, based on the current clarification. GST applies when the voucher is redeemed for goods or services.

Can a journal voucher be used for GST adjustments?

Yes. Journal vouchers are commonly used for non-cash GST adjustments, including tax set-off entries, depending on the accounting treatment followed.

What is a supporting voucher?

A supporting voucher is the source document attached to the main voucher, such as an invoice, receipt, or bill, which provides proof of the transaction.

What happens if I make a wrong voucher entry in BUSY?

If the books are still open, the voucher can be altered. If the books are finalised, pass a reversal entry and then record the correct entry. A posted voucher should not normally be deleted.

What is the difference between a sales voucher and a sales invoice?

A sales voucher is the internal accounting record of the sale. A sales invoice is the customer-facing document issued for the transaction and must comply with GST invoicing rules where applicable.

How does voucher numbering work in BUSY accounting software?

In BUSY, voucher numbering can be configured under voucher series settings. Separate series can be used for different voucher types, and automatic numbering helps maintain proper sequence without manual errors.