E-invoicing, done as you invoice.

Nigeria’s e-invoicing rules require business invoices to be validated, signed and reported to the Nigeria Revenue Service (NRS, formerly FIRS). Vendex does each step as part of creating the invoice, so compliance isn’t a separate job at the end of the month.

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INV0142Invoice numberYour own, or generated by Vendex 7C2E1A90Service IDFrom your business’s IRN template 20260918DateIssue date as YYYYMMDD

Validated

Required fieldsOK
HSN codes3 of 3
VAT7.5%

Signed · QR added

Hashed and signed with your business’s private key. The QR code carries the IRN, both TINs, the amounts and the signature hash.

Transmitted

Sent through a certified Access Point Provider.

Confirmed by NRS

What an e-invoice needs. And who does the work.

Invoice Reference Number

A unique identifier for every invoice: invoice number, Service ID and date.

Vendex generates it when the invoice passes validation.

Digital signature

Each invoice is cryptographically signed, so it can be shown not to have changed.

Vendex signs with the keys issued to your business.

QR code

A scannable code with the IRN, issue time, both TINs, amounts and signature hash.

Vendex adds it to every invoice and prints it on the PDF.

Reporting to the NRS

The invoice is transmitted to the NRS within 24 hours.

Vendex sends it through a certified Access Point Provider and updates the status on confirmation.

Structured data and codes

Invoices follow the approved UBL 2.1 schema, with the right HSN or service code on every item.

Vendex builds to the schema and lets you search approved codes by keyword.

Audit trail

Invoice data and its history are kept and can be produced on request.

Vendex logs every creation, change, transmission attempt and result with a timestamp.

Six steps between “create” and “confirmed”. All of them automatic.

Step 1
Validate
Fields, formats, codes and tax checked against the schema.
Step 2
Issue the IRN
From your invoice number, Service ID and the date.
Step 3
Sign
Invoice data hashed and signed with your private key.
Step 4
Add the QR code
A verification code placed on the invoice PDF.
Step 5
Transmit
Encrypted and sent through a certified Access Point Provider.
Step 6
Confirm
The invoice status updates as soon as the NRS confirms it.

Integrations › NRS MBSSandbox

Tax ID (TIN)

0214••••-0001

Service ID

7C2E1A90

Entity ID

28e6••••-b4fa-437c-••••

Business ID

1fd6••••-9d41-4a98-••••

Access Point Provider

Selected

Keys file

keys.txt · uploaded

Test in sandboxGo live

Connect once. Test before it counts.

You’ll need the identifiers the NRS issued to your business and your keys file. The setup guide covers each field.

01Open Integrations, then NRS MBS
Choose Complete setup.
02Enter your identifiers
Tax ID, Entity ID, Business ID, Service ID and Access Point Provider.
03Upload your keys file
The cryptographic keys (.txt) issued for signing.
04Test, then go live
Send test invoices in the sandbox first.

You don’t need this to start. Creating, sending and tracking invoices works from day one.

Corrections and reports stay compliant too.

Credit notes

Refund a customer, correct an overcharge, cancel a signed invoice or give a discount after invoicing.

Linked to the original invoice automatically.

Debit notes

Charge an additional amount, correct an undercharge or add items you missed.

Linked to the original invoice automatically.

Compliance reports

VAT returns, the invoice transmission log, a tax summary and a fiscalisation report.

For any date range, ready to download.

The terms, in plain words.

Access Point Provider: A certified company that securely transmits e-invoices to the NRS.
Credit note: A document that reduces or cancels an invoice amount, usually for a return or correction.
Debit note: A document that increases an invoice amount for additional charges.
Entity ID: The identifier the NRS assigns to each registered business.
HSN code: A Harmonized System code that classifies products and services for tax, from category down to the specific product.
IRN: Invoice Reference Number. The unique identifier for an invoice, built from the invoice number, Service ID and date.
MBS: Merchant Buyer Solution, the NRS’s e-invoicing framework.
Service ID: A four- to eight-character identifier taken from your business’s IRN template.
TIN: Tax Identification Number, assigned to businesses and individuals for tax purposes.
UBL: Universal Business Language, the standard structure for electronic business documents.
VAT: Value Added Tax. The standard rate in Nigeria is 7.5%.

Send your first compliant invoice today.

Start with 3 free invoices a month, and switch on e-invoicing when you’re ready.