What Is Promis (promis.co) and What Does It Do?

Updated

Promis is an eInvoicing engine built for accounting platform providers. It lets those platforms offer eInvoicing to their users without building the underlying PEPPOL infrastructure themselves. If you run or develop an accounting system and want to add send-and-receive eInvoicing, Promis is positioned as the layer that handles the complex parts for you.

What Promis actually does

Promis enables accounting system providers and their users to send and receive eInvoices using PEPPOL. The site describes it as the "invisible engine" that lets you offer eInvoicing services without dealing with complicated PEPPOL specifications.

In practical terms, that means:

  • Your platform can offer eInvoicing to your users.
  • Those users can then exchange invoices with their suppliers electronically.
  • Promis manages the PEPPOL-side data transformation and specification work.

Who it's for

The site names two main audiences:

Audience What Promis offers them
Accounting platforms A way to add eInvoicing as a feature without building it in-house
Developers and tech leads Avoids the need to implement PEPPOL specifications directly

The value proposition for both is the same: skip the development investment and still ship eInvoicing.

The problem it solves

PEPPOL is the international standard for eInvoicing, and the site describes it as containing a complex data transformation process. Building bespoke integrations against it is described as time consuming and problematic.

Promis states it spent 25,000 dev hours on PEPPOL and eInvoicing so that customers don't have to. The pitch is straightforward: save thousands of dollars and months of software development by using an existing engine rather than building your own.

Why eInvoicing matters in Australia

The site frames eInvoicing as already arrived in Australia and rapidly changing the AP/AR landscape. Businesses can:

  • Send and receive electronic invoices.
  • Reduce data entry errors and wage costs tied to traditional invoicing.
  • Rely less on paper and PDF invoices.
  • Get paid faster.

A specific incentive the site highlights: the Australian Government says eInvoices issued to it will be paid within 5 days, with interest if late. The New Zealand Government is also on board, paying eInvoices in 10 days from 1 July 2020. The site presents this as a reason to move early and demonstrate industry leadership.

What to check before deciding

The site's own framing tells you where to look next:

  • Pricing — there's a dedicated pricing page, so check it for current commercial terms rather than assuming anything.
  • Fit with your stack — Promis is aimed at accounting platforms, not necessarily end businesses invoicing directly. Confirm which side you're on.
  • PEPPOL scope — the core claim is that Promis absorbs PEPPOL complexity. Verify what's covered versus what your team still needs to handle.

If you're an accounting platform evaluating whether to build or buy eInvoicing capability, Promis is a buy option specifically designed to remove the PEPPOL development burden. The next step is the pricing page and a conversation about your platform's requirements.