To meet the GST InvoiceNow requirement you need an InvoiceNow-Ready Solution — software accredited by IMDA, or a connection through an accredited access point. IMDA publishes the official list. IRAS lists free InvoiceNow-Ready packages, aimed at small businesses with few invoices, until 31 March 2031; the current list runs to 31 March 2027.
If e-invoicing is all you need, one may fit. Beyond price, the decision is whether you want a connector added to what you already run, or accounting software that is itself an InvoiceNow-Ready Solution.
The three kinds of option
- 1A free package — on IRAS’s list, aimed at small businesses with few invoices, until 31 March 2031.
- 2Your existing accounting software, InvoiceNow-enabled
- 3Accounting software that is itself an IMDA-accredited InvoiceNow-Ready Solution
None of these is the right answer in general.
What to check before committing
Is it on IMDA’s accredited list, today?
“Peppol-ready” and “InvoiceNow-ready” are not the same thing. Check the official IMDA list, not the vendor’s marketing page.
Does it handle what you actually invoice?
IRAS lets you aggregate point-of-sale, simplified-tax-invoice and petty-cash data before you submit it, and some transactions (such as reverse charge and import permits) need not be submitted. Make sure the solution covers your in-scope transactions.
Can it receive as well as send?
InvoiceNow is a two-way network. Receiving e-invoices from suppliers matters as much as sending them.
Does it validate?
Can it catch wrongful GST charges from non-registered suppliers before you claim input tax?
What happens after March 2031?
Free packages have an end date. Know what the pricing looks like afterwards.
How long does onboarding take?
Start well before your wave. Support queues will not get shorter closer to each deadline.
The transition grant
IMDA runs a fixed transition grant for eligible businesses that take up a new paid accredited solution; free packages don't qualify. See the InvoiceNow transition grant guide for who qualifies and how claims work.
Where MassAdmin fits
MassAdmin is not an IMDA-accredited InvoiceNow-Ready Solution. On Business and above it exports invoices as Peppol-format (PINT SG) files; sending them through an accredited Access Point is planned. IRAS lists free InvoiceNow-Ready packages, aimed at small businesses with few invoices, until 31 March 2031; if e-invoicing is all you need, one may fit. MassAdmin is for the rest of the back office: payroll with CPF, your books and e-signatures, in one login.
You use an InvoiceNow-Ready Solution to submit invoice data to IRAS from your date.
30-day free trial · no card
Sources
- Source: IRAS, GST InvoiceNow Requirement (updated 8 October 2026). Checked 10 October 2026.
- Source: IRAS, FAQs for businesses on the GST InvoiceNow Requirement (updated 23 September 2026). Checked 10 October 2026.
This guide is for general information only and does not constitute legal or financial advice.
Related
- GST InvoiceNow deadlines
- GST F5 filing guide
- Singapore SME compliance calendar 2026 — every payroll & tax deadline in one place
Questions
Do I have to pay for an InvoiceNow-Ready Solution?
Not always. IRAS lists free InvoiceNow-Ready packages, aimed at small businesses with few invoices, until 31 March 2031.
What is an access point?
A Peppol network accredited service.
Can I switch solutions later?
Yes, though it means re-onboarding.
My accounting software says it is “Peppol-ready”. Is that the same?
Not necessarily. Check IMDA’s list.
When is my deadline?
Depends on registration and supplies. See our guide on InvoiceNow deadlines.