Singapore releases updated InvoiceNow FAQs

Singapore’s IMDA (Info-communications Media Development Authority) has recently issued updated Frequently Asked Questions (FAQs) in relation to the national InvoiceNow e-invoicing initiative and network. Avalara has reproduced these below for clarity.


Year Milestone
2018IMDA became the first Peppol Authority outside of Europe
2019Nationwide e-invoicing network launched
2020Re-branded as InvoiceNow

The InvoiceNow network is built on the Peppol network and Singapore has adopted Peppol BIS Billing 3.0 standards except that it has replaced VAT related rules with Singapore GST (Goods and Service Tax) rules.  

E-Invoicing in Singapore is voluntary for B2B transactions. InvoiceNow requires enterprises to have a Unique Entity Number (UEN) but international businesses can exchange documents with Singaporean businesses through the Peppol network. B2G e-invoicing is mandatory (if not by law but by practical implementation) and business can submit e-invoices to Singapore government agencies via InvoiceNow. The Accountant-General’s Department is the central recipient for all e-invoices submitted to Singapore Government Agencies (which will subsequently send the e-invoices to the respective Singapore Government Agencies for processing). 

Inland Revenue Authority of Singapore (IRAS), the Singapore tax authority, does not receive data or e-invoices – InvoiceNow is not currently a pre-clearance system nor has any embedded Continuous Transaction Controls 

InvoiceNow e-invoicing does however supports GST reporting and Tax Invoice requirements in Singapore, including:  

  • each invoice line shall have the invoiced item GST category code 
  • GST breakdown shall be provided for each distinct combination of GST category code and GST rate  
  • where the invoice currency is not in Singapore dollar (SGD) the seller required to state GST related amounts in SGD 
  • SG specific Peppol transaction business rules that relate to GST 

FAQs - General

1. What is InvoiceNow?

InvoiceNow allows direct transmission of invoices in a structured digital format from one finance system to another using the Nationwide E-delivery network, which is based on Peppol , creating opportunities for automation. As such, both SMEs and large enterprises can enjoy smoother invoicing and faster payments, with shorter invoicing processing time without any manual paperwork.

2. I am already using PDF E-Invoice, why is InvoiceNow different

In a common business scenario today, an PDF e-invoice is sent to the recipient organisation by email. This is a single-sided operation requiring your recipient to re-enter the details of the invoice into their own accounting system (e.g. accounts payable). A more complete solution should include the transmission of data from supplier system to buyer system without human intervention and potentially allow for the InvoiceNow invoice to be paid seamlessly. 

3. Is InvoiceNow a form of Electronic Data Interchange (EDI) e-invoice?

Yes, InvoiceNow is a type of Electronic Data Interchange (EDI) based on the Peppol standards. Additionally, the Peppol network complements companies' existing EDI connections to allow einvoicing to businesses connected to the Peppol network.  

4. What is Peppol?

Peppol is an international E-Document delivery network and business document standard form of Electronic Data Interchange (EDI) allowing enterprises to digitally transact with other linked companies on the Network.  

5. Is InvoiceNow e-invoicing different from Peppol e-invoicing?

No, InvoiceNow e-invoicing is based on the Peppol business document standard and operates over the Peppol network and allowing enterprises to digitally transact with other linked companies on the Network.  

6. How are the banks involved in InvoiceNow?  

InvoiceNow is supported by ABS which is the Association of banks in Singapore, as both InvoiceNow and PayNow are UEN based. Supporting banks are working on solutions that allow users to flip InvoiceNow invoices to payment (such as PayNow) directly cutting down on complexity and reducing business friction.  

7. What is IMDA's role in the network?

IMDA is the Peppol Authority responsible for definition of domestic rules, the governance of network by ensuring conformance of standards, and approving providers serving the Singapore businesses.  

8. Are consumer invoices covered under InvoiceNow?  

No, InvoiceNow only covers business to business transactions. Business to consumer transactions are currently not covered.  

9. How can I get InvoiceNow and connect to the Nationwide E-delivery network?

You can activate InvoiceNow on any Peppol Ready solution which has been certified by IMDA. You can check the list of solution at  

10. How will InvoiceNow work with other Electronic Data Interchange (EDI) solutions?

InvoiceNow on Nationwide E-delivery Network complements your existing EDI connections to allow e-invoicing to businesses connected to the Peppol network. This extends the reach of digital connections that you can access via your existing solutions to new segments.  

11. Should I replace my Electronic Data Interchange (EDI) solutions?  

You should not replace your EDI solution if it is providing you benefits. Peppol network complements your existing EDI connections to allow e-invoicing to businesses connected to the Peppol network.  

InvoiceNow to Government (B2G)

12. Do I have to be on the Peppol network in order to issue InvoiceNow invoices to the Government through the Peppol network?

Yes, you need to be on the Peppol network to issue InvoiceNow invoices the Government through this network. AGD has developed a guide that explains how you may do so, and the requirements to comply with. The guide can be found here

13. Does InvoiceNow e-invoice meet the requirements of a tax invoice for Goods and Services Tax (GST) purposes?

Although invoices issued under the InvoiceNow system do not contain the words “Tax Invoice”, IRAS is prepared to accept the invoices as valid tax invoices which businesses may use to support their GST input tax claims. This is on the condition that all the other contents required on a tax invoice, as specified under Regulation 11 of the GST (General) Regulations are present, and where it is a simplified tax invoice, the contents as specified under Regulation 13 of the GST (General) Regulations are present.

Any input tax claims by the business will also be subject to the normal input tax claiming conditions for GST. To comply with the record keeping requirement under the relevant Tax Acts, businesses will have to ensure that proper internal controls are put in place within their e-invoicing/accounting systems to ensure the integrity, completeness, accuracy, availability, and reliability of the electronic records, including all transactions executed electronically, where applicable. For more information about record keeping requirements, please refer to the following e-Tax Guides on IRAS website to find out more:

Cost & Benefits to Organisations

14. How can InvoiceNow e-invoicing help save cost?

a. Faster payment of Invoices due to simplification of Invoice to Payment processes. Several banks are working on solutions that allow users to directly flip an InvoiceNow einvoice to an E-Payment.
b. Reduction of tedious and time consuming manual processes (estimated $8 per invoice according to a study commissioned by IMDA)
c. Reduction of errors and rectification costs (estimated to affect 3% of paper invoices and costing as much as S$72 to rectify, according to a study commissioned by IMDA).
d. Reduction of storage, retrieval and delivery costs.  

15. How is the government helping end-user companies? How does this actually benefit them?

IMDA has put in placed the nationwide e-delivery network with open and international standards for companies to adopt. Companies that adopt the e-invoicing network stand to gain from business efficiency and improved payment cycles. IMDA has also certified Access Points (APs) who will assist the end-user companies in getting connected through a variety of methods to meet the different digitalisation status of each company. By providing choices and variety for end-user companies to adopt e-invoicing through the open standard, more can come on board the network and gain from it early.  

16. If my supplier and/or client is not on the network, will I still enjoy the benefits?

To benefit from the network, users (i.e. senders and receivers of invoices) must be registered on the network. Just like emails, there's a need for each to be registered and have a PeppolID that partners can send InvoiceNow e-invoices to.  

17. Is there a monetary benefit for end-user companies coming on board? Or are there only non-monetary benefits such as faster payments?

Though getting paid earlier and improvements to efficiency and are clear monetary benefits. Having a digital connection for B2B document exchange is also a good first step to further digitalisation.  

18. What benefits are there for InvoiceNow e-invoicing?  

a. Faster payment cycles
InvoiceNow Invoices are more efficiently being sent out in suppliers' systems and then received, captured and processed more quickly at buyers’ systems, thus speeding up payment. Faster payment as a result of faster processing. Delay in payment is a major concern of SMEs (SPRING 2017 business survey). A US Federal Reserve Bank of Minneapolis in 2017 showed 45% of paper invoices were paid on time compared to ~92% of e-invoices.  

b. Cost reduction
Research have indicated that senders of e-invoices can save about 59% and recipients can save 64% compared to using paper-based processes. Contributing cost factors could be storage and retrieval of hard copy invoices.  

c. Improve efficiency  

i. Paper and PDF invoices require finance or accounting staff on both sides to key and rekey data into electronic systems. This process of data entry leads to human error. Error-prone manual process is avoided with e-invoicing. 
ii. Businesses can skip labour-intensive steps such as verifying information, rectifying errors and resolving conflicts. 
iii. Process are more streamlined d. Reduced Complexity Just as PayNow is a UEN-based e-payment, InvoiceNow is also a UEN-based e-invoicing, by using the same underlying UEN, Invoice to payment processing can be further simplified. e. Transact internationally When other businesses are in the network, sending e-invoices to overseas partner is seamless.  

19. Is there a charge for InvoiceNow einvoices? Won’t this add costs to a business?  

Most Access Points (AP’s) and Solution Providers (SP’s)will charge based on transaction fees (sending and receiving InvoiceNow e-invoices). With the wide variety of AP’s and SP’s in market with several offering free InvoiceNow e-invoicing feature, the market is expected to be competitive. Some will provide limited free InvoiceNow e-invoices sufficient for small businesses. Some will bundle the transactions in a bigger product package. While the rest will tier the transactions, where at high volume the price per transaction can be very low.  

For businesses who require value-added services (e.g. translating the PDF invoice into the InvoiceNow Peppol format), APs and/o SP’s may charge additional fees. The overall savings by moving to e-invoicing is expected to exceed the costs, irrespective of size of businesses. How Do I Get Connected?  

20. How long does the process of getting connected take?  

The process of connecting depends on the complexity of the systems and processes involved. Many local accounting and ERP solution providers have default capabilities to send InvoiceNow e-invoices which can be switched on with immediate effect, while for others there is a need to make changes to the systems and processes that may vary in duration.  

21. I am interested in InvoiceNow e-invoice and would like to know how do I get connected  

The steps that you as an end user business need to do are:  

a. If you are using a service provider's Accounting/ERP solution, check that they are certified as a Peppol Ready solution (meaning that they are already connected to Peppol). If so certified, find out from them how to sign up and use.
b. Alternatively, you can check with your banking provider if they can assist with a solution offering.
c. If you have your own financial system, engage with an approved Access Point (AP) operator who will be able to help you connect your system. The list of approved Access Point operators can be found from IMDA website (see under ‘Access Point and Solution Providers’)
d. Once you have your solution established, register and get your Peppol business identity (typically done by your AP)
e. Learn how send and receive Peppol e-invoices using your solution.
f. Update all Purchase Order documents with your Peppol business identity for invoicing
g. Announce that you are E-invoicing ready to all your business partners and suppliers  

22. What are the available technical support for implementing e-invoicing?  

IMDA provides regular business briefing and technical workshops through the year. Please do look out for these events on the IMDA website.  

23. Will this be integrated to accounting systems?  

Yes, InvoiceNow e-invoicing can be integrated to accounting systems. Please check the Peppol Ready solution list to see if your accounting system is connected. If not, you can help get your accounting system connected by working with an Access Point. If the accounting system is from a Service Provider, you can write to your provider to recommend that they get connected to Peppol network.  

24. Are there any other countries which has adopted E-Invoicing?  

Countries who have adopted Peppol as their standard are listed on OpenPeppol website:  

25. Can I send and receive InvoiceNow invoices cross border? How will this impact my business with overseas customers?

You can receive and send InvoiceNow e-invoices to businesses in other countries as long as they are on the Peppol network.  

26. Are my suppliers and partners on the network?  

You would be able to search for your Peppol Ready suppliers, partners and customers here. If you would like to specifically search for Peppol Ready Singapore-registered businesses, you can search by name or by UEN number do remember to add a “0195:SGUEN” to the UEN number in your search string (i.e. search for “0195:SGUEN”<>).  

27. Are there any briefings on InvoiceNow?  

Briefing for businesses, are available on a monthly basis. Latest information can be found on IMDA’s website.  

Network Security 

28. Is the InvoiceNow network secure?  

Yes, the network is secure. Firstly, only Peppol certified Access points are registered on the network and are authorised with a PKI certificate issued by the governing authority. Secondly, all data being transmitted on the network is protected with SSL transport layer security such that it only goes through securely encrypted pipes. Thirdly, the data being transmitted is signed using the Access Points Service Provider (AP) authorised PKI certificate to ensure that the data is genuine and non-repudiable. Lastly, any receiving Access point will check the signature of the sending Access point service provider to ensure that it is as per the authorised one registered on the network and only accept data sent by genuine Access Points. 

29. Will I be able to recall an e-invoice after sending it? What should I do if I need to recall an e-invoice?  

No, sent e-invoices cannot be retrieved. The InvoiceNow networks functions similarly to email, i.e. once the invoice is created/finalised and sent across the network, there is no feature/function in the network to retrieve the sent invoice. In order to cancel the incorrect invoice, we recommend the supplier to send out a credit note with reference to the wrongly sent invoice to cancel the incorrect data elements. Alternatively, the supplier can instruct the e-invoice recipient to discard the received incorrect e-invoice and re-send a fresh one. To minimise such issues, the sender could try saving the invoice as draft and review the details before finalising and sending out to the customer.  

30. Will the government be able to see the details of my invoices?  

No, under current regulation government is not able to access or track your e-invoices. The routing of e-invoices through the network is on a direct peer to peer basis between the sending and receiving Access Point providers. SGNIC maintains a central directory of businesses on the network which is necessary for Access Points to know which AP to route destination e-invoices to (similar to how SGNIC maintains the DNS addresses of Singapore registered domains, such that any URL typed on a browser lands on a destination webpage).  

CorpPass Matters  

31. Must all new businesses registration go through the CorpPass KYC process?  

All Singapore registered companies with valid UENs are required to go through the CorpPass KYC process. Foreign companies with UENs will not be required to go through the CorpPass KYC process.  

32. Where can I find out more information on CorpPass/SingPass?  

You can visit the CorpPass website.  

33. Can I continue with the registration if I do not have the CorpPass user account?  

For Singapore companies, the CorpPass ID is required to complete the registration process. If the companies doesn’t have the CorpPass ID, they should apply for one at the following website:  

34. How can I find out the CorpPass user for my company?  

Normally the CorpPass Admin Users for the company would be the founder or directors of the company. Please check with them.  

35. Is there a time limit to complete the CorpPass KYC registration process?  

From the time you receive the first email on the CorpPass KYC registration, you will have 28 days to complete the registration. You will be reminded every 7 days if the registration is not completed.  

36. I did not receive CorpPass registration email. Why is this so?  

It could be due to the following reasons:  

  1. The email could be in the Junk or Spam folder. Please check your Junk or Spam email folder.  
  2. Please check that you have provided the correct email address to your solution provider 

At Avalara, we make e-invoicing compliance simple. The Avalara e-invoicing solution is designed to comply with regulations in over 60 countries and we’ve got the future covered, too. This cloud-based solution is flexible, scalable and allows you to quickly respond to new requirements, including Singapore’s InvoiceNow and the SG Peppol BIS Billing 3.0 e-invoicing standard using the Peppol network. Avalara is a Certified Peppol Service Provider and is an accredited Peppol access point in Australia, New Zealand and Japan. 

Contact us to discuss how Avalara can help you meet e-invoicing requirements in Singapore, Japan, Australia, New Zealand, and Europe. You can also watch our latest webinar on E-invoicing updates in Japan and Singapore.  

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