FBR digital invoicing software
Make sales tax invoices on simple screens. We check the buyer’s NTN or CNIC, work out the tax and send each invoice to FBR. You get FBR’s invoice number and QR code back.
See the software →About us
Faubix builds eInvoicePro for Pakistan
We make software that helps businesses in Pakistan make sales tax invoices, check their buyers and send each invoice to FBR, without building the link to the government themselves.
Our mission
Tax software that people actually use
Faubix is a software company in Karachi. eInvoicePro is our FBR digital invoicing product. We built it for finance teams, CA firms and IT teams who need invoices to reach FBR every day without fuss, and for businesses whose ERP or POS needs a simple way to connect.
What we make
One place for FBR, PRA and SRB invoicing
Five ways to use eInvoicePro, depending on how many invoices you make and where they come from.
Bulk digital invoicing
Fill one Excel template with hundreds of invoices. Every row is checked before anything goes to FBR, and each invoice is then sent on its own and tracked.
See bulk invoicing →Digital invoicing API
Link your ERP, POS or own billing system to FBR. Send invoices from your system and get back the FBR number or a clear reason for any failure.
See the API →PRA E-IMS (Punjab)
For businesses that sell services in Punjab and must report to the Punjab Revenue Authority, from the same place as their FBR invoices.
See PRA E-IMS →SRB POS (Sindh)
For restaurants, salons and other service businesses in Sindh that must send their sales to the Sindh Revenue Board.
See SRB POS →Who uses it
From one shop to thousands of invoices a day
Small businesses and traders
A few invoices a day, made on screens by one person, with the tax worked out for them.
Invoicing software →Wholesalers and distributors
Hundreds or thousands of invoices a month, prepared in Excel or sent from an ERP.
Retail and wholesale →Manufacturers
Invoices that start in an ERP, with HS codes, units and reduced rates set up once.
Manufacturing →Shops and POS counters
Fast invoices at the till, with the FBR number and QR code on the receipt.
POS and retail →CA and tax firms
Many clients, each with their own registration and credentials, run from one place.
CA and tax firms →Software houses and IT teams
Teams that connect their own products to FBR through our API instead of building the link themselves.
The API →How we work
What you can expect from us
We build and run it ourselves
The product, the API and the link to FBR are written and looked after by our own team. There is no reseller between you and the people who write the code.
We keep up with the rules
When FBR or a province changes a rule or a field, we update the product. You do not have to rewrite anything on your side.
We say what we are
eInvoicePro is invoicing software and an API. It is not a licensed integrator, and it is not tax advice. When a question belongs with your tax adviser, we say so.
We show our sources
Our guides and blog posts link to the FBR and provincial texts they rely on. When something has only been reported in the press, we say that too.
Your credentials stay yours
Your FBR token is stored encrypted. It can be saved or replaced, but it is never shown back, not even to the account that saved it.
Plain answers
We write for business owners and finance teams, in plain English. If a page needs a tax word, we explain it.
Reach
Trusted across Pakistan
Businesses, monthly users and alliance partners on the platform.
- 2000+
- Registered businesses
- 1986+
- Active monthly users
- 150+
- Alliance partners
Approximate counts of registered businesses and active monthly users on the platform as of mid-2026.
Alliance partners
150+ tax firms work with us
Tax consultants and chartered accountant firms across Pakistan help their clients get started with eInvoicePro. Through the Alliance Partner Program, partners earn a commission, get training and marketing material, and are listed on our website. The partner keeps the advice; we look after the software.
Company details
Who we are and where to find us
Who builds it
eInvoicePro is developed by Faubix, a Pakistani software house. The product, the API and the FBR-facing layer are all built and maintained in-house.
Where we are
Office # 907, 9th Floor, Chapal Plaza, Hasrat Mohani Road, off I.I. Chundrigar Road
Karachi, Pakistan
How to reach us
info@faubix.com
+92 326 833 7716
WhatsApp on the same number
Learn with us
Free guides, written in plain English
Most of what we know about FBR digital invoicing is on this site, free to read.
Guides
How FBR digital invoicing works, deadlines, IRIS, sandbox testing, PRA and SRB, and how to connect each popular accounting system.
Read the guides →Blog
Practical posts on rejections, corrections, CA firm workflows, retail counters and what changed in 2026.
Read the blog →Error lookup
Paste the message FBR sent back and see what it means and how to fix it.
Look up an error →How we help
From first question to live invoices
Most teams follow the same path. We meet you where you are.
Ready to simplify your FBR digital invoicing?
Join 2000+ businesses that use eInvoicePro to make invoices and send them to FBR.