How to register a digital invoice with FBR
“Register digital invoice” means turning on FBR digital invoicing in IRIS, then issuing e-invoices through software. Integron is the invoicing layer — IRIS remains where you log in and get tokens.
What you register — and where
You do not register a single invoice on this website. You register your business for the FBR digital invoicing system in IRIS, then each digital invoice you submit is registered with FBR when it gets an IRN.
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Confirm your NTN and sales tax registration
FBR digital invoicing applies to sales-tax-registered persons. You need the NTN (or CNIC) and IRIS login you already use for tax filings.
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Log in to IRIS
Open iris.fbr.gov.pk, sign in with your registration number and password, and open Digital Invoicing from the dashboard.
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Choose how you will send invoices
IRIS offers API integration (software such as Integron) and, where available, manual invoice generation. For day-to-day e-invoicing, choose API integration.
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Complete Digital Invoicing registration in IRIS
Follow FBR’s screens: licensed integrator / PRAL where required, technical contact, business nature and sector for sandbox scenarios. FBR’s own labels can change; use the Digital Invoicing user manual on fbr.gov.pk if a field is unclear.
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Copy the sandbox token
When sandbox is enabled, copy the bearer token from IRIS. Paste it into Integron settings. You do not need to write your own API client.
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Test scenarios, then go live
Submit the sandbox invoices FBR requires for your sector. When production token appears, switch environment in Integron and start issuing live digital invoices.
IRIS vs Integron
IRIS is FBR’s portal: login, Digital Invoicing enrolment, sandbox and production tokens. FBR Digital Invoicing is where you create buyers, line items, validate, submit, and download QR PDFs. You need both. Token details: IRIS bearer token guide.
After you are registered
Create an Integron account, paste the sandbox token, and run scenarios before production. Full product walkthrough: FBR digital invoicing system steps. If you are comparing software vs building an API yourself, read FBR digital invoicing integration.
Official IRIS login: iris.fbr.gov.pk. FBR publishes the Digital Invoicing user manual on its website — use that if a field on the IRIS screen does not match this overview.
Already have an IRIS token?
Create your Integron account and start e-invoicing in the sandbox.