01 / For SMEs, finance teams & accountants
NorthGate E-Invoicing
Create invoices in your browser. NorthGate checks every detail, sends it to NRS for approval and files a stamped copy you can find in seconds. No technical skills needed.
- Checks before you send
- Credit notes & corrections
- Audit-ready reports
- Encrypted archive
INV-2026-0416
Example Pharma · ₦92,000
Seller TINValid
VAT at 7.5%Correct
Buyer TINMissing
Line items & totalsMatch
Add buyer TINSave draft
request.shresponse.json
curl -X POST https://api.northgateds.com.ng/v1/invoices \
-H "Authorization: Bearer $NG_KEY" \
-d '{"number":"INV-2026-0418","buyer_tin":"5432109876"}'
# 200 OK · 0.8s
{ "status": "approved", "irn": "NG-7F3A91C2..." }
02 / For enterprises, ERPs & software vendors
NorthGateOS
Our compliance engine as an API. Connect your ERP once and NorthGateOS validates, transmits and archives invoices at volume — operating as your dedicated System Integrator and Access Point Provider.
- REST API & webhooks
- Batch submission
- Multi-entity support
- Full sandbox
From first invoice to audit, in four steps.
- 01
Create or connect
Raise invoices in the app, or plug in your system through the API.
- 02
Check before sending
Missing TINs, wrong totals and format errors are flagged first.
- 03
Approved by NRS
We send it to the NRS Merchant-Buyer Solution (MBS) and return the approval.
- 04
Stored for audit
Every invoice archived, searchable and ready for tax reviews.
Technical Standard
NRS SI & Access Point Architecture
Aligned with official NRS MBS specs
Data protection
Encrypted storage, role-based access
Multi-factor sign-in and audit logs
Support
Every enquiry answered in 24 hours
Our team is based in Abuja
Get ready
Now onboarding businesses
Be ready before 1 July 2027