Accurate as of 7 November 2026.
TL;DR
A Peppol ID is a business’s address on InvoiceNow. You need your customer’s before your software can send them an e-invoice.
In Singapore it follows one format: 0195:SGUEN followed by the company’s UEN. A company with UEN 200500001A has the Peppol ID 0195:SGUEN200500001A.
The format alone doesn’t prove a company is on InvoiceNow. Check by searching its UEN on the free SG Peppol Directory, which also shows what kind of documents it can receive.
Government agencies are invoiced through one ID: the Accountant-General’s Department’s 0195:SGUENT08GA0028A, with the agency identified by a Business Unit code.
If a customer isn’t listed, invoice them the usual way. Nothing stops you sending a PDF to a business that isn’t on the network.
Free asset below: an 8-point Peppol ID checklist for setting up customers correctly the first time.
You’ve set up InvoiceNow, created your first e-invoice and filled in every field except one: Customer Peppol ID. You email your customer’s accounts team to ask for it.
The reply comes back: “Our what?”
It’s a very common moment, and the good news is that you rarely need to ask. In Singapore, a Peppol ID can be worked out from information you probably already hold, and confirmed in about a minute on a free government directory. This guide shows you how, for your own business, your customers and government agencies, and what to do when someone isn’t on the network yet.
What is a Peppol InvoiceNow ID?
A Peppol ID is the unique identifier that tells the InvoiceNow network where to deliver an e-invoice. It works like an email address for business documents: your software sends the invoice to your customer’s Peppol ID, and the network routes it to whichever InvoiceNow-ready system that customer uses. Every business that sends or receives e-invoices on InvoiceNow has one.
The Singapore format: 0195:SGUEN plus the UEN
Singapore Peppol IDs are built from the Unique Entity Number (UEN). DBS explains it simply: a Singapore-registered company listed on the Singapore Peppol directory has a Peppol ID of 0195:SGUEN followed by its UEN.
Part | Example | What it means |
|---|---|---|
0195: | 0195: | The identifier scheme used for Singapore UENs on the Peppol network |
SGUEN | SGUEN | A fixed prefix that is the same for every Singapore business |
UEN | 200500001A | The company’s Unique Entity Number, exactly as registered |
Full Peppol ID | 0195:SGUEN200500001A | What you enter in your software |
Because a UEN doesn’t change when a company changes its name, the Peppol ID built from it doesn’t either. One caution: the format tells you what a company’s Peppol ID would be. It doesn’t tell you whether the company has actually registered on InvoiceNow. For that, you check the directory.
How to find your own Peppol ID
Look in your InvoiceNow-ready software. Your Peppol ID is usually shown in your company or InvoiceNow settings once registration is complete.
Search your UEN on the SG Peppol Directory at peppoldirectory.sg. If you’re registered, your company name and Peppol ID appear in the results.
If you’re not listed, you’re not registered yet. GoBusiness advises businesses to approach their solution provider or Access Point Provider to register them in the SG Peppol Directory with their UEN and obtain a Peppol ID. You’ll normally be asked to authorise the registration through Corppass.
If your business was registered on InvoiceNow through a previous provider, a new provider usually can’t register you again until the existing registration is moved across. IMDA’s Corppass FAQ for providers notes that an existing registration can prevent a new one, so ask your new provider about transferring it.
How to find a customer’s Peppol ID, step by step
The SG Peppol Directory, run under IMDA’s InvoiceNow framework, lets anyone search Singapore businesses registered on the network by company name or UEN. Each result shows the company’s full name, its Peppol ID and the types of Peppol document it can receive.
Get your customer’s UEN. It’s often on their purchase orders, quotations or letterhead. If not, search their registered name on the government’s UEN search.
Search the UEN on the SG Peppol Directory. Searching by UEN is more reliable than searching by name, which can match several similar companies.
Check the company name in the result. Make sure it is the legal entity you actually bill. Group companies each have their own UEN, and therefore their own Peppol ID.
Check the document types. The listing shows what the customer can receive. If you plan to send credit notes as well as invoices, confirm both are supported.
Save the Peppol ID to the customer record in your software, copied exactly, including the 0195: prefix.
Confirm the first invoice arrived. A quick message to the customer’s accounts team after your first e-invoice saves a month-end surprise.
Lots of customers? Use the bulk search
If you’re moving a whole customer list onto InvoiceNow, you don’t need to search one by one. The directory’s bulk search accepts a CSV or Excel file of UENs and returns company names, Peppol IDs and supported document types. Registered directory users can also download the full directory or connect to it by API, according to IMDA’s Peppol technical playbook.
Invoicing a government agency: one Peppol ID for all of them
Government invoicing works differently, and it’s where most first-time mistakes happen. You don’t look up each ministry or statutory board. According to IMDA’s guide to e-invoice submission to government agencies, e-invoices to Singapore government agencies are sent to the Accountant-General’s Department (AGD), whose Peppol endpoint ID is 0195:SGUENT08GA0028A.
Before you send, the same IMDA guide sets out three requirements:
A Corppass account for your business.
An approved vendor record on Vendors@Gov. Vendors create and maintain this record by logging in with Corppass.
The correct Business Unit on the invoice, which tells AGD which agency the invoice is for. If you’re not sure which Business Unit to use, ask your contact at the agency.
Get the Business Unit wrong and the invoice can’t reach the right agency, so it’s worth confirming it once and saving it against that customer.
What if your customer isn’t on the directory?
Not finding a customer is normal: many businesses haven’t joined InvoiceNow yet. Here’s what to do in each case.
What you find | What it usually means | What to do |
|---|---|---|
No result for their UEN | They haven’t registered on InvoiceNow | Send the invoice the usual way, by email or PDF. You can tell them how to join, but you don’t have to wait for them. |
A result under a similar name | A related company in the same group, or a different business | Check the UEN on your contract or purchase order and bill the entity you actually contracted with. |
Listed, but not for the document you want to send | They can receive some Peppol documents but not others | Send that document another way, or ask them to enable it with their provider. |
They say they’ve just registered but aren’t showing | Their registration may not be complete yet | Ask them to check with their solution provider, then search again before you send. |
One note for GST-registered businesses: if the GST InvoiceNow Requirement already applies to you, a customer not being on the network doesn’t take you out of it. As EY’s summary of the IRAS rules puts it, where the customer hasn’t adopted InvoiceNow, the supplier collates and transmits the invoice data to IRAS separately. Our guide to what InvoiceNow is and how it works covers the background.
The Peppol ID checklist
Run through this when you set up InvoiceNow, and whenever you add a new customer. Feel free to share or link to it.
# | Check | Why it matters |
|---|---|---|
1 | Every customer record has a UEN saved | The UEN is the key to finding their Peppol ID |
2 | Peppol IDs are found by searching the UEN, not the name | Names are easy to mix up; UENs are unique |
3 | IDs are copied exactly, including the 0195: prefix | One missing character and the invoice can’t be delivered |
4 | The listed company name matches the entity you bill | Group companies each have their own Peppol ID |
5 | Supported document types are checked | Some receivers accept invoices but not credit notes |
6 | Government customers use AGD’s ID and the right Business Unit | Agencies aren’t looked up individually |
7 | A billing email is kept for customers not on InvoiceNow | You still need a way to send them invoices |
8 | Receipt of the first e-invoice is confirmed with each customer | Catches setup problems before payment is late |
InvoiceNow in AveriWorks
AveriWorks is a cloud accounting and ERP platform built for Singapore businesses, and InvoiceNow is included from the free Starter plan.
Register your own Peppol ID with your UEN from inside AveriWorks. Our help guide on registering your Peppol ID walks through it, and checking your registration shows how to confirm it’s active.
Moving from another provider? See transferring your Peppol ID.
Invoicing government agencies? See our help guide on setting up government customers.
Send and receive e-invoices in the same system that keeps your books.
Open a free Starter account for accounting and InvoiceNow, and have your Peppol ID registered before your next invoice run. Plan details are on the pricing page.
Frequently asked questions
What is a Peppol ID in Singapore?
A Peppol ID is a business’s unique address on InvoiceNow, Singapore’s e-invoicing network. For Singapore companies it takes the form 0195:SGUEN followed by the company’s UEN, for example 0195:SGUEN200500001A. Your software needs your customer’s Peppol ID to send them an e-invoice, and your customers need yours to send e-invoices to you.
How do I find my company’s Peppol ID?
Check your company or InvoiceNow settings in your InvoiceNow-ready software, or search your UEN on the SG Peppol Directory at peppoldirectory.sg. If your company doesn’t appear, it hasn’t been registered on InvoiceNow yet. Ask your solution provider or Access Point Provider to register it with your UEN, which usually involves authorising the request through Corppass.
Is a Peppol ID the same as a UEN?
Not quite. A Singapore Peppol ID contains the UEN, but adds the prefix 0195:SGUEN in front of it. And while every registered business has a UEN, only businesses that have registered on InvoiceNow have an active Peppol ID. Searching the UEN on the SG Peppol Directory tells you whether a company is registered.
What Peppol ID do I use to invoice a Singapore government agency?
Use the Accountant-General’s Department’s Peppol ID, 0195:SGUENT08GA0028A, and include the correct Business Unit to identify the agency you are billing. You also need a Corppass account and an approved vendor record on Vendors@Gov. If you are unsure which Business Unit applies, ask your contact at the agency.
What should I do if my customer doesn’t have a Peppol ID?
Invoice them the way you do today, usually by email or PDF. A customer not being on InvoiceNow doesn’t stop you billing them. You can let them know how to join, and search the directory again later. If you are GST-registered and the GST InvoiceNow Requirement applies to you, your InvoiceNow-ready solution still transmits the invoice data to IRAS separately.
Sources
IMDA, Peppol Technical Playbook (SG Peppol Directory search, bulk search, downloads and API): https://www.imda.gov.sg/How-We-Can-Help/nationwide-e-invoicing-framework/Peppol-Technical-Playbook
IMDA, Guide to e-invoice submission to Singapore government agencies via the Peppol network: https://imda.gov.sg/-/media/imda/files/programme/nationwide-e-invoicing-framework/guide-e-invoice-submission-via-peppol-network.pdf
IMDA, Corppass FAQ for InvoiceNow registration: https://www.imda.gov.sg/-/media/imda/files/programme/nationwide-e-invoicing-framework/corppass-faq.pdf
GoBusiness, GST InvoiceNow Requirement (registering for InvoiceNow and obtaining a Peppol ID): https://www.gobusiness.gov.sg/news-and-updates/news/gst-invoicenow-requirement
DBS, InvoiceNow for SMEs (Peppol ID format): https://dbs.com.sg/sme/invoicenow
EY, Singapore revenue authority announces GST InvoiceNow Requirement: https://www.ey.com/en_gl/technical/tax-alerts/singapore-revenue-authority-announces-gst-invoicenow-requirement
SG Peppol Directory: https://www.peppoldirectory.sg/ · UEN search: https://www.uen.gov.sg/ · Vendors@Gov: https://www.vendors.gov.sg/
Accuracy note
This article is accurate as of 7 November 2026. The Peppol ID format, SG Peppol Directory features and government invoicing requirements are taken from the IMDA, GoBusiness and bank guidance listed above as published on that date. The UEN 200500001A is an example used in DBS’s guidance, not a real customer. Government invoicing procedures are set by AGD and IMDA and may be updated; check Vendors@Gov and IMDA before your first government e-invoice. This article is general information, not tax, legal or accounting advice.