Peppol Accredited Service Provider · E-Invoicing Software in Singapore
Simplify E-Invoicing in Singapore with Bytize
Bytize is a Peppol Accredited Service Provider in Singapore. Send invoices from SAP, Microsoft Dynamics or Salesforce, and Bytize prepares them in Singapore’s Peppol format for delivery through InvoiceNow via an IMDA-accredited partner Access Point.
Since 1 April 2026, every new voluntary GST registrant must use InvoiceNow. Existing GST-registered businesses join in phases from 1 April 2028 to 1 April 2031.
What is E-Invoicing in Singapore?
E-Invoicing in Singapore runs on InvoiceNow, the nationwide network run by the Infocomm Media Development Authority (IMDA) on the Peppol standard. Under the GST InvoiceNow Requirement, GST-registered businesses in scope must also send their invoice data to IRAS through InvoiceNow.
InvoiceNow replaces emailed PDFs with structured invoices that go straight into your buyer's accounting system. Invoices you issue outside InvoiceNow, such as POS sales or sales to buyers not on the network, must still be submitted to IRAS once recorded.
What an e-invoice in Singapore must follow
- Format: Structured Peppol invoice following IMDA's specification for Singapore
- Exchange: Through an IMDA-accredited Access Point on the Peppol network
- Reporting: Invoice data reported in your GST return is transmitted to IRAS through InvoiceNow
- Identifier: Your Peppol ID is based on your UEN and registered in the SG Peppol Directory
Who must comply
- New voluntary GST registrants since 1 April 2026 (newly incorporated companies since 1 November 2025)
- Existing GST-registered businesses in four revenue bands from 1 April 2028 to 1 April 2031
- Overseas entities and businesses registered only under the reverse charge regime are excluded
- Businesses outside the requirement can still join InvoiceNow voluntarily
E-Invoicing in Singapore: timeline and deadlines
IRAS is phasing in the GST InvoiceNow Requirement, starting with new registrants and ending with the largest businesses.
1 Nov 2025
Newly incorporated companies registering for GST voluntarily within 6 months
InvoiceNow required
1 Apr 2026
All new voluntary GST registrants
InvoiceNow required
1 Apr 2028
Existing GST-registered businesses with supplies up to S$200,000, plus new compulsory registrants
InvoiceNow required
1 Apr 2029
Supplies above S$200,000 up to S$1 million
InvoiceNow required
1 Apr 2030
Supplies above S$1 million up to S$4 million
InvoiceNow required
1 Apr 2031
Supplies above S$4 million
InvoiceNow required
The 2028 to 2031 phases were announced at Committee of Supply 2026; the legislation will be enacted later.
How E-Invoicing in Singapore works with Bytize
Singapore uses the Peppol 4-corner exchange, plus a transmission of invoice data to IRAS for businesses in scope.
Send invoice data
Your ERP sends invoice data to Bytize as JSON through the API.
Validate and convert
Bytize converts the data to Singapore's Peppol format and checks it against the official rules.
Deliver on Peppol
The invoice is delivered to your buyer’s Access Point through Bytize’s IMDA-accredited partner.
Transmit to IRAS
Invoice data is sent to IRAS through Bytize’s IMDA-accredited partner.
Buyer receives
The invoice lands directly in your buyer's accounting system.
Status back to you
Every status is pushed to your ERP by webhook.
InvoiceNow e-invoicing solutions in Singapore, built for your business
Bytize’s e-Gate API turns your ERP data into Singapore’s Peppol format, ready for InvoiceNow.
Send JSON, get Singapore Peppol
Post invoice data as JSON. Bytize maps it to Singapore Peppol automatically, and the same payload works across every Peppol country we cover.
Validation before sending
Every invoice is checked against the Peppol rules before it’s sent, and failures are held for review, never silently dropped.
Certified Peppol delivery
Invoices are delivered through a certified Peppol Access Point partner, so you never manage certificates yourself.
Real-time status webhooks
Every state change, from draft to validated to sent, plus any validation failure, is pushed to your system.
Receive supplier invoices
Incoming Peppol invoices from your suppliers in Singapore arrive parsed into the same JSON shape, ready for your accounting system.
Tamper-evident archive
Each sent invoice joins a tamper-evident SHA-256 hash chain that auditors can verify at any time.
Readable PDF copy
Every sent invoice comes with a PDF version for buyers who want a visual copy.
Benefits of E-Invoicing in Singapore
E-invoicing is a legal requirement, but done well it also speeds up payments and removes manual work from your finance team. Here's what changes when you switch with Bytize.
Stay compliant without extra work
Invoices go out in IMDA's Peppol format, so you meet the GST InvoiceNow Requirement from your start date.
Get paid faster
Invoices reach your buyer's system in seconds instead of days by email or post, so approval and payment start sooner.
Fewer errors and rejections
Each invoice is validated against the official rules before it's sent, so missing fields and wrong tax codes are fixed before your buyer sees them.
No more manual data entry
Supplier invoices arrive as structured data your ERP can post directly, freeing your team from retyping and checking PDFs.
Audit-ready records
Every invoice and status message is stored in a tamper-evident archive you can retrieve and export when the tax authority asks.
One setup for every market
The same connection serves the UAE, Oman, Belgium, Germany, France and Singapore, so expanding to a new market doesn't mean a new provider.
E-invoicing software in Singapore that connects to your ERP
Bytize sits between your ERP and the tax network, so your team keeps raising invoices the way it does today.
SAP
ERP
Microsoft Dynamics
ERP
Salesforce
CRM and billing
Any system
Through the Bytize API (JSON)
Custom ERP
Compliance obligations for E-Invoicing in Singapore
IRAS hasn't published a separate fine schedule for the GST InvoiceNow Requirement. These are the obligations that apply once you're in scope.
| Rule | Applies to |
|---|---|
| Transmit invoice data to IRAS through InvoiceNow | Businesses in scope of the GST InvoiceNow Requirement |
| Use an InvoiceNow-Ready Solution or an IMDA-accredited Access Point | Everyone sending through InvoiceNow |
| Submit data for invoices issued outside InvoiceNow, such as POS sales | In-scope businesses, once the invoice is recorded |
General GST Act penalties for record-keeping and filing breaches still apply.
Why choose Bytize for E-Invoicing in Singapore
Bytize brings Peppol and GCC compliance experience to InvoiceNow.
Peppol Accredited Service Provider
Bytize is an OpenPeppol member and SMP provider, and delivers invoices through a certified Peppol Access Point partner.
One API for your Peppol markets
Send the same JSON, and Bytize applies each country’s rules for you.
Works with your ERP
Connect SAP, Microsoft Dynamics or Salesforce, or any system that can send JSON through the Bytize API.
Accredited in Saudi Arabia and Jordan
Bytize is a ZATCA-approved Phase 2 solution provider in Saudi Arabia and is live on JoFotara in Jordan.
Finance-grade security
TLS 1.3 and AES-256 encryption, an append-only audit log and a tamper-evident archive. GDPR-aligned, with a SOC 2 Type I audit underway.
E-Invoicing in Singapore: frequently asked questions
Get ready for E-Invoicing in Singapore
Tell us your GST status and your ERP. We'll confirm your InvoiceNow date and show how Bytize connects you to Peppol.