Integration services from a licensed System Integrator

Keep your systems. We'll connect them to the NRS.

Already running an ERP, accounting platform, custom billing system or internal finance software? You do not need to replace it. Elyonar designs and builds the connection between your existing workflow and e-invoicing with the NRS.

Talk to an integration specialistExplore the API

Access Point Provider · NITDA/2026/A3HXS0

System Integrator · NITDA/2026/S21ZW0

What we do for you.

One team, from the first call to production.

Discovery and design

We map your systems, invoice types and volumes, and design the connection.

Your ERP or custom system

We connect the ERP, accounting software or billing system you already run.

Invoice data mapping

Your invoice data is transformed into what the NRS requires, line by line.

The full NRS workflow

IRN and QR code, reporting, delivery to your buyers and the invoices sent to you.

Sandbox and end-to-end testing

Every invoice type is tested in the sandbox before anything goes live.

Rollout and support

We switch on production with you and stay on hand afterwards.

How an integration project runs.

Priced by quote, agreed before any work starts.

  1. 01

    Talk to us

    A call to understand your systems, invoice volumes and deadline.

  2. 02

    Proposal

    We agree the scope, the price and the timeline in writing.

  3. 03

    Build and test

    We build the connection and test it end to end in the sandbox.

  4. 04

    Go live

    Your business selects Elyonar as its Access Point on the portal of the NRS; we switch on production.

Why Elyonar.

Licensed by NITDA as both Access Point Provider and System Integrator.

One provider, both licences

The same company builds your integration and carries your invoices to the NRS, as Access Point Provider and System Integrator.

Your systems stay yours

No migration and no new invoicing tool for your finance team.

Built on a live platform

Your integration runs on the same Access Point that serves the Yona app.

Tell us about your systems.

A 30-minute call with an integration specialist to understand what you run and what you need.

Talk to an integration specialistExplore the API

Why you can trust Yona with your invoices.

Licensed, certified and registered in Nigeria.

Licensed by NITDA
Elyonar LTD, the company behind Yona, is a licensed Access Point Provider (NITDA/2026/A3HXS0) and System Integrator (NITDA/2026/S21ZW0).
Invoices that hold up
Every invoice is checked before it is sent, sealed with its IRN and QR code, and reported to the NRS. A mistake is corrected with a credit note, never by editing.
Information security
Certified to ISO/IEC 27001:2022. Your data is encrypted in transit and at rest.
Data protection
Registered with the Nigeria Data Protection Commission (NDPC/DCP/12069). We collect only the data e-invoicing needs.
Your account, protected
TIN verification, two-step sign-in and a full record of who did what.
Nothing received goes unseen
Invoices other businesses send you through the e-invoicing network show up in Yona too.

Three ways to use Yona.

Start in the app, automate when you are ready, or have us connect the systems you already run.

Businesses and finance teams

Use the Yona app

Create, send and report compliant invoices in your browser. No developer needed.

Get started

Technical teams and platforms

Build on the Yona API

Automate invoicing from your own systems with the API, webhooks and a sandbox.

Explore the API

Enterprises with an ERP or custom system

Let Elyonar integrate it

Our licensed System Integrator team connects the systems you already run to the NRS.

See integration services

A system integrator or software company running your own integration? Use Elyonar as your Access Point: see the partner programme.