Singapore InvoiceNow E-Invoicing: What GST Businesses Need
IRAS is phasing in a GST InvoiceNow requirement on Singapore's Peppol network from November 2025 through 2031. Here's the timeline, the free IMDA-accredited options, and which software fits.
Singapore's e-invoicing runs on **InvoiceNow**, the national network built on the Peppol standard, and IRAS is phasing in a **GST InvoiceNow** requirement that transmits invoice data to IRAS. It starts with newly incorporated companies on voluntary GST registration (**1 Nov 2025**), extends to all new voluntary GST registrants (**1 Apr 2026**), then progressively to existing GST-registered businesses by size through to **April 2031**. To comply you need an **InvoiceNow-Ready solution** from IMDA's accredited list — many are **free for SMEs until March 2031** — and there is government funding of up to **SGD1,000 for SMEs and SGD5,000 for larger firms**. The practical step is to pick accounting or corporate-services software that is on IMDA's InvoiceNow-Ready list; confirm accreditation before you commit.
| Option | Type | How it handles InvoiceNow | Best for |
|---|---|---|---|
| Free InvoiceNow-Ready package | IMDA-accredited (free tier) | Peppol Access Point plus basic invoicing; free for SMEs until Mar 2031 | SMEs wanting zero- or low-cost compliance |
| Deskera | Business suite | All-in-one books and invoicing; verify it is InvoiceNow-Ready on IMDA's list | SMEs wanting a single suite |
| HashMicro | ERP | ERP with e-invoicing; suited to higher volume | Larger firms needing ERP integration |
| Osome | Accounting / corporate services | Outsourced bookkeeping and filing; confirm InvoiceNow handling | Founders who prefer a done-for-you service |
| Sleek | Corporate services / compliance | Incorporation plus accounting; confirm InvoiceNow-Ready status | New companies bundling compliance |
| Peppol Access Point / SP | Integration route | Connects your ERP to the InvoiceNow (Peppol) network for IRAS | Custom ERP or high volume |
The Tools in Detail
Deskera
Business Management · From USD 29/month · Free tier · Global, SEA, Singapore, Malaysia, Indonesia, Philippines · EN / ZH / ID / MS
Deskera is a Singapore-headquartered cloud-based business software suite designed for small and medium-sized enterprises (SMEs). It offers integrated modules for accounting (ERP), customer relationship management (CRM), and human resources (HR), providing a unified platform to manage various business operations.
Deskera is particularly relevant in Singapore due to its compliance with local regulations and its status as a pre-approved vendor for government productivity grants (like the PSG). It offers localized features for GST/SST compliance and local payroll requirements in several SEA countries, making it a preferred choice for regional SMEs.
Best for: SMEs looking for an integrated business management suite; Startups needing scalable ERP and CRM solutions; Businesses in Singapore and the broader SEA region; Companies transitioning from manual to automated workflows
HashMicro
ERP · Paid · SEA, Singapore, Indonesia, Malaysia, Philippines · EN / ID / MS
HashMicro is a Singapore-headquartered ERP suite popular with Indonesian, Malaysian, and Filipino manufacturing, distribution, and trading companies. It bundles accounting, inventory, manufacturing, CRM, HR, and procurement into one product, often as a cheaper SEA alternative to SAP Business One and Oracle NetSuite for businesses between 50 and 500 staff.
HashMicro is the Singapore-based ERP that found product-market fit specifically with Indonesian manufacturing and distribution SMEs. Pricing typically lands at SGD 3,000 to SGD 15,000 per month depending on user count and modules, which is one-third to one-quarter of SAP Business One or NetSuite for the same workload. The Indonesian compliance modules (e-Faktur output, PPN handling, PSAK formatting) are tighter than global vendors. Deskera is the right pick for service-business SMEs and lighter workflows; HashMicro is the right pick for SEA companies with manufacturing or multi-warehouse operations that need ERP depth.
Best for: Indonesian PT manufacturing companies with multi-plant operations; Malaysian distribution and trading SMEs needing inventory depth; Filipino retail chains running 10+ outlets needing consolidated reporting; SEA exporters managing import/export documentation in one system
Osome
Finance · From SGD 99/month · Singapore, Hong Kong, United Kingdom · EN / ZH
Osome is a Singapore-headquartered corporate services and accounting SaaS used by Singapore Pte Ltd founders and SMEs for company incorporation, corporate secretarial filings, accounting, GST returns, payroll, and ACRA compliance. Used across Singapore, Hong Kong, and the UK by founders, e-commerce sellers, and SME owners who want bundled corporate services with software-driven workflow.
Osome is the Singapore-built corporate services and accounting SaaS for Pte Ltd founders and SMEs. Pricing is roughly SGD 99 to SGD 800 per month depending on bundle (incorporation, corp sec, accounting, payroll, GST). For Singapore Pte Ltd founders bundling incorporation and ongoing corp sec plus accounting, Osome typically beats traditional Singapore corporate services firms (typically SGD 1,500-3,000 monthly equivalent) on price and software-led workflow. Sleek and Lantern are the main competitors in Singapore; Osome wins on e-commerce seller integration and on Hong Kong founder onboarding, Sleek wins on Singapore-only depth and traditional bookkeeping handover. For Singapore SMEs over SGD 5 million annual revenue, traditional firm relationships often beat pure-software platforms on complex compliance.
Best for: Singapore Pte Ltd founders bundling incorporation, corp sec, and accounting; Singapore SMEs replacing manual bookkeeping with software-led workflow; Hong Kong founders incorporating in Singapore for SEA market access; E-commerce sellers needing accounting tied to marketplace settlement data
Sleek
SaaS · From SGD 60/month · SG, HK, AU, UK · English
Sleek registers your Singapore Pte Ltd or Hong Kong company without a single paper form, then handles bookkeeping, GST, and ACRA filings on a monthly subscription. Founders use it instead of dealing with a traditional corporate secretary firm.
Headquartered in Singapore. Used by 450,000+ businesses globally with strong SG and HK SME concentration. Native to ACRA and IRAS workflows that overseas providers usually mishandle.
Best for: Foreign founders setting up a Singapore Pte Ltd; SG and HK SMEs replacing a corporate secretary firm; Startups consolidating incorporation, accounting, and banking under one provider
SEA Operational Reasoning
Two things make Singapore different from its neighbours. First, the requirement is tied to GST registration and rolls out gradually — newly incorporated voluntary registrants from November 2025, all new voluntary registrants from April 2026, then existing GST-registered businesses in size bands through to April 2031 — so the honest first question is which cohort you fall into, not which software to buy. Second, cost is largely solved for small businesses: IMDA offers InvoiceNow-Ready solution packages free to SMEs until March 2031, plus grant funding, so many firms can comply without a new software bill. That reframes the decision toward what you already run: if you use an accounting or ERP suite, the task is confirming it is on IMDA's accredited InvoiceNow-Ready list; if you outsource finance, a corporate-services provider can handle it. Among tools in our directory, Deskera and HashMicro cover the suite/ERP path while Osome and Sleek cover the done-for-you path — in every case, verify the specific solution's InvoiceNow-Ready accreditation with IMDA before relying on it, because that list, not a vendor's marketing, is what determines compliance.
Related Expert Guides
The questions operators actually ask.
When does my business have to use InvoiceNow?
It is phased by GST-registration cohort: newly incorporated companies on voluntary GST registration from 1 November 2025; all new voluntary GST registrants from 1 April 2026; then existing GST-registered businesses progressively from 2028 (smaller supplies first) through to April 2031. IRAS publishes the definitive schedule; confirm your cohort there.
How much does InvoiceNow compliance cost?
For many businesses, little or nothing. IMDA offers InvoiceNow-Ready solution packages free to GST-registered SMEs until March 2031, and there is government funding of up to SGD1,000 for SMEs and SGD5,000 for larger firms. The main cost is usually setup and process change rather than software licensing.
What is InvoiceNow, technically?
InvoiceNow is Singapore's nationwide e-invoicing network built on the international Peppol standard, using the PINT-SG format. GST InvoiceNow goes a step further than ordinary Peppol exchange by transmitting tax-relevant invoice data to IRAS for GST reporting, which is why you need an InvoiceNow-Ready solution rather than any generic e-invoice tool.