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Last updated at
October 27, 2025
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Book NowSingapore has set up a nationwide e-invoicing system (InvoiceNow) managed by the Infocomm Media Development Authority (IMDA) to digitize the creation and sending of invoices on the Peppol network. GST-registered businesses and those applying for GST registration are required to transmit invoice data to IRAS via the InvoiceNow network to comply with regulations and streamline GST reporting. Other businesses still can join the network to speed up payment cycles and reduce administrative tasks while keeping audit-ready records on the system.
The process improves the accuracy of invoices, supports secure transactions, and allows smooth operations for both local and international business partners. This blog explains what e-invoicing in Singapore is, who must comply, how the Peppol system operates, and how
Flick Network will help businesses with simple and reliable solutions.
E-invoicing in Singapore is a government-backed system called InvoiceNow, introduced by IMDA and built on the Peppol network to handle invoices digitally. A business generates a standardized invoice that transmits directly on the Peppol network to the recipient. This process replaces paper or email invoices and ensures a business meets the requirements set by authorities for accurate and secure invoicing.
The invoice sent through Peppol arrives directly in the recipient’s accounting system without manual entry. This reduces errors of data re-entry and speeds up processing times. Businesses benefit from faster payments and reliable records that are ready for audits on demand.
E-invoicing in Singapore increases the efficiency of business operations and reduces administrative costs on the system. Traditional paper invoices create delays and duplicate entries that slow transactions. A digital system keeps invoices accurate and ensures records are ready for tax reporting on the scheduled dates.
The system lowers the risk of errors and fraud by keeping records consistent and verifiable on the Peppol network. Payments are processed faster and auditing becomes simpler for suppliers and buyers. Businesses gain a reliable method to track invoices without repeated handling or manual entry of data.
IMDA supports small and medium enterprises with grants and incentives to join the network. Registration allows businesses to connect with local and international partners on the Peppol system. This encourages wider adoption and smoother operations across industries in Singapore.
Category
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Requirement / Benefit |
| Suppliers to Government Agencies | All suppliers of goods or services to government agencies must send invoices on the Peppol network. This will keep the records of invoices accurate and ensure payments are processed on time. It will also maintain compliance with IMDA standards and prevent delays or rejected claims on submitted invoices. |
| New GST-Registered Businesses | From 1 November 2025, newly incorporated companies that voluntarily register for GST must use e-invoicing. From 1 April 2026, the same rule applies to all new voluntary GST registrants. This will ensure tax reporting remains digital from the start and reduce the need for adjustments or changes on accounting systems later. |
| Other Businesses (Optional but Beneficial) | Enterprises not required to adopt the system can still join the network. Using e-invoicing will improve the speed of payment cycles on invoices and reduce administrative work on the system. It will also provide audit-ready records of every transaction to support reporting and compliance checks. |
| Businesses with Regional or Global Transactions | Companies trading across borders will benefit from e-invoicing because Peppol is recognized in multiple countries. This will enable smooth exchange of invoices with overseas partners and reduce manual reconciliation of cross-border transactions on the system.
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The Peppol e-invoicing network provides a secure channel for businesses to exchange invoices on a trusted system. A supplier will generate an invoice on their ERP or billing system and send it through a Peppol-certified Access Point. The invoice will reach the buyer’s accounting software directly without manual entry or re-keying of data.
Each invoice on the network follows the Peppol BIS Billing 3.0 format, ensuring accuracy and consistency of details. Businesses will benefit from automated validation on every invoice and secure transmission of all documents on the network. This system reduces errors and prevents unauthorized changes on submitted invoices.
Buyers and suppliers will experience faster processing and reliable tracking on every transaction. The network ensures audit-ready records on demand for regulatory inspections and financial reporting. Peppol will support both local and international exchanges of invoices efficiently and securely.
A valid e-invoice in Singapore will include key details to maintain accuracy of the transaction, trace records, and meet IMDA standards. Each part of the invoice will provide information for the supplier and the buyer and will allow processing on the Peppol network without manual handling.
Supplier details: The invoice will show the name of the supplier, a registered UEN, the official address, and contact details. These details will confirm the supplier and allow verification on the Peppol network or by authorities.
Buyer details: The invoice will include the legal name of the buyer, a registered UEN, and the billing address. This will ensure the invoice reaches the correct company and supports proper record keeping on both sides.
Invoice reference number: Each invoice will carry a unique reference number that will track the transaction. This number will prevent duplicate records and allow retrieval on systems if required.
Itemized list: The invoice will provide a list of all goods or services with quantity, price, tax, and totals. This will show charges clearly and will allow accurate documentation of each transaction.
GST details: The invoice will display the tax rate and calculated GST amounts for each item. This will ensure compliance with Singapore tax rules and will make reporting simpler for both parties.
Total amount: The invoice will show the final payable amount after adjustments or discounts. This will provide clarity on payments and will reduce confusion between the supplier and the buyer on the exact sum.
SME supplier to government: A small IT company will submit invoices for government contracts on the Peppol network. Payments will be processed faster since the invoices will go directly into the government system. This will reduce administrative work and will allow the business to track payments on time.
**Retail business supplier:**A retailer receives purchase invoices from suppliers on the Peppol network, which reduces manual data entry and lowers accounting errors. This process keeps records accurate on the system and supports proper reporting and tracking for the business.
Cross-border transactions: A Singapore company will trade with a European buyer both connected on Peppol. Invoices will be exchanged directly without additional integration or delays. This will allow smooth international transactions and clear documentation of every invoice on the network.
Flick Network will provide a complete InvoiceNow-Ready e-invoicing solution for businesses of all sizes on the Peppol network. The platform integrates with existing ERP or billing systems without replacing workflows. This allows companies to adopt e-invoicing smoothly while maintaining operational efficiency. Flick offers the following features to ensure compliance and seamless operations:
Generate e-invoices in approved formats: Flick will create invoices in the Peppol BIS Billing 3.0 format recognized by IMDA. Every invoice will be validated automatically for submission and compliance. This will reduce manual errors and will keep all transactions traceable and accurate on the system.
Connect directly with the Peppol network: Businesses will connect to the nationwide e-invoicing network through a Peppol-certified Access Point. Invoices will be delivered securely with real-time validation. This will ensure compliance with IMDA standards on every submission.
Manage corrections and credit notes efficiently: Businesses will issue corrections or credit notes directly on the platform. Records will remain accurate and a clear audit trail will be maintained. This will reduce risks of delays or penalties on invoicing.
Handle high invoice volumes effortlessly: Large daily invoice volumes will be processed without affecting ERP or billing operations, allowing businesses to continue transactions smoothly during peak periods on the system.
Receive purchase invoices digitally: Companies will receive invoices from suppliers electronically through Flick’s Peppol integration. Records will stay digital, easy to track, and compliant with the authority on every invoice.
Access ongoing local support: Flick will provide continuous support for setup, onboarding, and daily operations. Businesses will receive guidance on maintaining smooth e-invoicing processes on the platform.
Singapore e-invoicing supported by IMDA is a secure and efficient method for a business to issue invoices through InvoiceNow, which is built on the Peppol network. The system will reduce the cost of processing, prevent the risk of fraud, and will speed up the cycle of payments. It is not mandatory for every business, but it is required for government suppliers (B2G) and for certain newly GST-registered companies and is highly beneficial for businesses operating internationally. Other businesses still can join the network to speed up payment cycles and reduce administrative tasks while keeping audit-ready records on the system.
Non-compliance will result in delays of payments and will lower competitiveness on the market. Early adoption will help a business prepare for future requirements and will allow faster and safer processes on the network.
Contact Flick Network today to stay compliant.
What is Singapore e-invoicing?
It is the process of digital exchange of a business invoice through IMDA’s InvoiceNow Peppol network in a standardized format. The system allows invoices to be sent and received directly on accounting systems without manual entry.
Singapore e-invoicing required for all businesses?
It is not mandatory for all businesses. E-invoicing is required only for GST-registered businesses and those applying for GST registration. Other businesses can join the network voluntarily to streamline invoicing and payment processes.
What are the benefits of Singapore e-invoicing?
It will speed up the cycle of payments, reduce the number of errors, lower the cost of processing, and improve compliance of businesses on tax reporting.
Do SMEs need to adopt Singapore e-invoicing?
SMEs are encouraged to adopt the system as grants and support are available. Adoption helps reduce manual workload and improve operational efficiency. Mandatory requirements depend on GST registration and follow the phased IRAS timeline: from 1 November 2025 for newly incorporated voluntary GST registrants, and from 1 April 2026 for all new voluntary GST registrants.
How does Flick help with Singapore e-invoicing?
Flick Network provides a Peppol-certified, InvoiceNow-Ready solution with automated validations, management of credit notes, and ongoing local support. This allows businesses to stay compliant while maintaining smooth operations on the e-invoicing network.
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