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Debit Note Singapore:When & How to Issue a Debit Note in Singapore

Updated on: Feb 24th, 2025

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28 min read

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A debit note is a financial document used to adjust or correct the amount charged in an original invoice. It is mainly used in accounting for the return of goods, price mistakes, or added charges. Further, proper issuance of debit notes in Singapore has become imperative for all organisations to comply with IRAS regulations and follow accurate accounting policies and procedures. 

This guide provides a comprehensive overview of debit notes in Singapore, including their definition, common use cases, key components, issuance steps, and Goods and Services Tax (GST) implications. Additionally, you can download an editable debit note template that you can customize according to your needs.

What is a Debit Note?

A debit note is a financial and tax-related document used to adjust or correct an original invoice for goods or services. It is issued when buyers want to adjust amounts payable due to a return of goods, incorrect charges, or errors in accounting entries. 

It can also be used by sellers to increase the amount or tax charged on a previous transaction. Debit notes also work as supporting documents for purchase returns. 

Debit Note Common Use Cases

Here are a few examples to understand the concept of debit note better: 

Example 1 – Return of defective goods

A company LMN purchases 100 office desks worth SGD 50,000 from XYZ Suppliers. On delivery, LMN found that 10 desks which cost SGD 5,000 were damaged. Since LMN is not obliged to pay for the goods that are damaged, they prepare a debit note for SGD 5,000 to XYZ Suppliers. This reduces LMN's outstanding liability in their books by the amount of SGD 5,000.

Example 2 – Price discrepancy in an invoice

ABC Electronics sold 50 laptops to DEF Enterprises for SGD 1,200 each, for a total of SGD 60,000. However, because of a billing error, the invoice was raised only for 45 laptops, totalling SGD 54,000. To recover the remaining balance of SGD 6,000 relating to the extra 5 laptops, a debit note of the price difference was issued to DEF Enterprises.

When to Issue a Debit Note in Singapore?

There are two types of IRAS debit notes. These include the ones issued by the buyer and the supplier under the following situations. Further, it may be noted that a debit note is maintained by the buyer in its books. 

  • Vendor to buyer: To inform the buyer regarding a payment due or an adjustment in the amount billed
  • Buyer to vendor:  To request a change on the invoice, usually for damaged goods or overcharges.

A debit note is issued for various reasons, including:

  • Price adjustment: If the price of goods or services increases after the original invoice, a debit note serves to recover the additional amount.
  • Return of goods: When the buyer receives faulty or incorrect goods, he issues a debit note to the seller for adjustment in payment.
  • Tax adjustments: When there is a mistake in tax rates or calculations, a debit note is used for the rectification of the amount charged.

Components of a Debit Note in Singapore

As per the IRAS guidelines, businesses issuing debit notes and credit notes both should properly mention the following details in a debit note:

  • Supplier details: Name, address, contact details, and the Tax Identification Number (TIN).
  • Reason for adjustment: It's mandatory to clearly state the reason for adjustment. Be it pricing, return of goods, or any other adjustments.
  • Debit note number: A unique identification number for record-keeping.
  • Issue date: The date on which the debit note is issued.
  • Recipient details: Name, address, contact details, and TIN of the buyer.
  • Invoice reference: Reference of the original invoice number and date to which the debit note corresponds.
  • Details of Goods/services: Quantity, unit price and total amount excluding tax.
  • Tax details: Applicable tax rate and tax amount
  • Signature : Authorized signature to authenticate the same.

Debit Note Excel Template Download

This customizable debit note template makes it easy to create, edit, and issue debit notes accurately, following Singapore’s accounting standards. 

Download this editable Debit Note Excel format here.

Debit Note Sample

Debit Note

Debit Note From

 

Contact Person:

Email:

Contact No.:

Debit note to:

 

Email:

Contact No.:

TIN:

Place of Supply:

Shipping to:

 

TIN:

Debit Note Details

Debit Note No.:

Invoice No.:

Payment Date:

Debit Note Date:

Invoice Date:

#

Description

HSN/SAC Code

Quantity

Unit

Rate

Taxable Amount

Total

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Debit Note Amount

Total (before tax):

 

Tax 

Cess

 

 

Total Tax:

Total (after tax):

Grand Total:

Terms and Conditions:

 

 

 

 

Authorised Signatory

Invoice Vs Debit Note vs Credit Note

Understanding the differences between invoices, debit notes, and credit notes is crucial to ensure proper accounting and compliance with IRAS guidelines.

Aspect

Invoice

Debit Note

Credit Note

Purpose

Issued when a sale transaction occurs.

Issued when there is an overdue payment or an adjustment needed on the original sale.

Issued by the supplier to acknowledge a debit note and adjust the accounts receivable balance.

Impact on Accounts

Increases accounts receivable by recording the value of a fresh sale.

Reflects adjustments related to accounts receivable balance.

Reduces the supplier's accounts receivable balance.

GST Applicability

Issued for standard-rated supplies, enabling customers to claim input tax.

Used for transactions where no GST is charged (e.g., internal billings) or credit is due from suppliers.

Adjusts previously recorded GST amounts.

Who Issues It?

Supplier

Customer (to request an adjustment in the invoiced amount, e.g., for defective goods).

Supplier (to acknowledge a debit note and process the adjustment).

Where is It Recorded?

Sales ledger (for revenue recognition).

Buyer’s purchase return book.

Seller’s sales return book.

Example

Sale of goods or services, subject to GST.

Overdue payment reminder or return of defective goods.

Adjustment of a previously issued invoice due to an error or returned goods.

How to Issue a Debit Note in Singapore? 

Issuing a debit note involves four key steps:

  1. Clarify the Clearly state the reason for the adjustment. Some of the common reasons include: Price correction, Return of damaged goods and Tax calculation errors.
  2. Ensure you have all relevant records, including: Original invoice, Purchase order (if applicable), Proof of return of goods (if any.)
  3. Create the Debit Note using a software or manually  with the following details
  • Unique debit note number and date
  • Reason for adjustment
  • Supplier and recipient details
  • Reference to the original invoice
  • Description of goods/services and price adjustments
  • Corrected amount of tax (if any)
  1. Send the debit note to the buyer/ seller via email or a hard copy. 
  2. Retain a copy as an accounting and taxation record and adjust financial statements (if required). 

GST Considerations for Debit Notes in Singapore 

Businesses should properly account for and report their debit notes in the accounting period they pertain to. Here are the considerations that buyers/suppliers need to keep in mind while filing their GST-F5 returns: 

Box Number

Description

Debit Note Treatment

Box 1

Total Value of Standard-Rated Supplies: Enter the value of supplies chargeable to GST at the standard rate.

Deduct the reduction in standard-rated supplies by a debit note.

Box 2

Total Value of Zero-Rated Supplies: Enter the value of zero-rated supplies (export and international services).

Deduct the reduction in zero-rated supplies by a debit note.

Box 5

Total Value of Taxable Purchases: Report the value of standard-rated and zero-rated purchases.

Deduct the reduction in taxable purchases for which a debit note has been issued.

Box 6

Output Tax Due: Enter the GST amount charged on standard-rated supplies.

Deduct the reduction in GST charged due to a debit note.

Box 7

Input Tax and Refunds Claimed: Enter GST incurred for business purchases.

Adjust input tax claims for reductions due to debit notes.

Debit Notes in Singapore with E-Invoicing Mandate

In Singapore's transition to the InvoiceNow e-invoicing system, debit notes—documents issued to request additional payment or correct undercharges—are encompassed within the definition of invoices. As such, GST-registered businesses are required to transmit debit note data to the Inland Revenue Authority of Singapore (IRAS) using InvoiceNow solutions via the InvoiceNow network. This integration ensures that all adjustments to original invoices are accurately captured and reported, maintaining compliance with GST regulations.

Conclusion

Debit notes are a critical component for businesses to account for faulty purchases, changes in amount or tax rates, or purchase returns. Therefore businesses need to properly account for them as it not just impacts the accounting records but also tax compliances. As discussed, IRAS has laid down specific guidelines for debit notes and penalties too, for failure to adhere to them. 

Proper accounting of the debit note in the GST filings ensures that both the seller and buyer fulfil their GST obligations, hence avoiding errors in the GST returns. Moreover, proper issuance and proper management of the debit notes will not only smoothen your business operations but also reduce the chances of GST-related problems.

Frequently Asked Questions

What is a Debit Note in Singapore?

A debit note is a financial document issued by either buyer or supplier to account for purchase returns or changes in the price or tax amounts. It is recorded in the buyer’s books of accounts. 

When should a Debit Note be issued in Singapore?

A debit note in Singapore is issued in the following circumstances:

  • Return of goods purchased.
  • Changes in the invoice 
  • Changes in the tax rate
What information should be included in a Debit Note?

All the pertinent information should be mentioned in a debit note: 

  • Supplier & recipient details
  • Reason for adjustment
  • Tax Details
  • Debit Note Number
  • Details of goods/services
  • Reference to the original invoice
What is the format for a Debit Note in Singapore?

A debit note format is simple including all the details as mentioned in the IRAS guidelines. The sample debit note in Singapore is discussed above.

How should a Debit Note be sent to the buyer in Singapore?

A debit note can be sent via email and hard copy to the buyer in Singapore. 

What are the tax implications of issuing a Debit Note in Singapore?

The tax implications include an increase/decrease in the tax amount as well as proper filing in the GST returns. Businesses should properly report in Box No. 1, 2, 5, 6, and 7 in the GST-F5 to avoid penalties. Furthermore, if there are any corrections in the GST-F5 return, businesses can file GST-F7 to amend the details. 

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