For Wholesalers
B2B invoice sync and buyer STRN validation at scale.
Wholesalers operating in Pakistan’s FMCG supply chain were among the earliest businesses brought under FBR’s digital invoicing mandate. The requirement — formalized through SRO 709(I)/2025 — applies to registered wholesalers dealing in consumer goods, and the scope has been expanding with each subsequent notification. If you are a registered wholesaler issuing sales tax invoices, the question is no longer whether you need to comply but how quickly you can complete integration.
The specific challenge for wholesale operations is the volume and mix of B2B transactions. You are selling to a combination of registered distributors, retailers, and sometimes unregistered buyers. Each category requires different invoice treatment: registered buyers need STRN-validated invoices with IRNs; sales to unregistered distributors require the buyer’s NIC or NTN on the invoice under Section 23(1)(b) of the Sales Tax Act. Getting this wrong at scale creates compounding compliance problems.
Taxonomy handles this complexity at the invoice level. Before transmission, we validate buyer registration status against FBR’s database, apply the correct invoice structure based on whether the buyer is registered or unregistered, and transmit to PRAL accordingly. Your sales team raises the order; Taxonomy ensures the compliance layer is correct without requiring them to understand the regulatory nuances.
Key benefits
Buyer registration validation
Taxonomy checks each buyer’s STRN against FBR’s live database before the invoice is issued. Invalid or inactive registrations are flagged immediately — protecting you from issuing invoices that create input tax disputes downstream.
Registered vs unregistered buyer handling
Section 23(1)(b) requires different invoice fields for supplies to unregistered distributors. Taxonomy automatically applies the correct format — NIC/NTN for unregistered buyers, STRN validation for registered ones.
Bulk invoice processing
Wholesale operations often process hundreds of invoices in short windows, like morning dispatch runs or delivery order batches. Taxonomy handles concurrent PRAL submissions without creating delays in your order fulfillment workflow.
Clean Annex-C reporting
All transmitted invoices feed directly into FBR’s Annex-C pre-population for your monthly sales tax return. Fewer manual entries means fewer discrepancies and lower audit risk.
Frequently asked questions
Do we need to issue digital invoices to unregistered buyers?
Under the current mandate, supplies must be reported to PRAL regardless of whether the buyer is registered. For unregistered distributors, the invoice must include the buyer’s NIC or NTN as required by Section 23(1)(b) of the Sales Tax Act. Taxonomy handles this field automatically based on buyer registration status.
What if a buyer gives us a fake or inactive STRN?
Taxonomy validates STRNs against FBR’s live registry before invoice transmission. If the STRN is invalid, you are alerted before issuing the invoice — not after. This protects you from input tax disputes with buyers and from FBR queries about your sales reporting.
We deal in both taxable and exempt goods. How does Taxonomy handle mixed invoices?
Mixed invoices with taxable and exempt line items are structured according to FBR’s required payload format. Each line item carries its own tax treatment, HS code, and rate. Taxonomy maps your product catalogue to the correct tax classifications during onboarding.
How does e-invoicing affect our monthly sales tax return filing?
FBR uses your submitted e-invoice data to auto-populate Annex-C of your STR. This significantly reduces the manual work involved in return preparation and minimises the risk of discrepancies between your return and FBR’s records.
Can we move our product and buyer data into Taxonomy easily?
Yes. You can bulk-import your product catalogue and buyer list — including STRNs and registration status — during onboarding, so you are issuing compliant B2B invoices within days rather than re-entering everything by hand. From there, all invoicing happens in Taxonomy.
Related resources
Learn more about Taxonomy and how we connect you to FBR through PRAL.
Ready to integrate with FBR?
Get started with Taxonomy today. Our team will guide you through setup.