Quantus IMS

Invoice Management Solution

A complete invoice management platform built for Pakistani businesses and tax consultants — fully integrated with FBR's e-invoicing system. From sale invoicing and credit notes to tax consolidation and return-ready exports, all in one compliant solution.

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FBR e-InvoiceFINALISED · TRANSMITTED

SALES INVOICE

IRN: FBR-2025-INV-089124

INV-2025-0891

10 May 2025

Buyer NTN / STRN0012345-6

DescriptionSoftware Services

Taxable ValuePKR 500,000

GST @ 18%PKR 90,000

Total AmountPKR 590,000

Transmitted to FBR · QR code generated automatically

How It Works

Invoice to FBR in One Flow

Quantus IMS handles every step of FBR e-invoicing compliance automatically — from invoice creation to submission to tax reporting.

Create Invoice

Enter buyer NTN/STRN, select products with HS codes, and system calculates GST automatically.

Review & Finalise

Preview the invoice in FBR-compliant format. Approve to finalise — draft can be edited until finalised.

Transmit to FBR

Invoice is sent to FBR's e-invoicing API automatically on finalisation — no manual portal upload.

IRN & QR Code

FBR returns an Invoice Reference Number and QR code — both embedded on the invoice instantly.

Tax Register Update

Output tax register updates automatically. Monthly tax return data is ready for FBR Iris export.

Built For

Three Use Cases. One Platform.

Tax Consultants

Manage multiple client companies from a single login. Each client's invoicing, tax registers, and compliance data is fully isolated. Consolidate tax positions across your entire client portfolio from one dashboard.

Multi-client dashboard

Isolated client data

Consolidated tax view

Businesses & Vendors

Any company required to issue FBR-compliant e-invoices — wholesalers, distributors, service providers, manufacturers. Invoices transmitted to FBR automatically with IRN and QR code embedded.

Auto FBR transmission

IRN & QR generation

B2B / B2C / Export support

FBR Compliance

Built specifically around Pakistan's FBR e-invoicing requirements. Output and input tax registers compile automatically. Sales tax return data exported in FBR Iris-compatible format — monthly filing in minutes.

Iris-compatible export

Output + input registers

Net tax computation

Why Quantus IMS

FBR Compliance Without the Complexity

FBR e-invoicing compliance is mandatory — but managing it manually through spreadsheets and the FBR portal wastes hours every month and creates compliance risk. Quantus IMS automates the entire invoicing and tax workflow.

FBR e-invoicing integrated — invoices transmitted automatically on finalisation

IRN and QR code generation built in — full FBR compliance out of the box

Tax consultants manage multiple client companies from one login

Output and input tax registers generated automatically — no manual compilation

Sales tax return data exported in FBR Iris-compatible format

Complete audit trail for every invoice, credit note, and tax transaction

Role-based access ensures each user sees only what their role permits

Real-time FBR submission tracking with guided error resolution

Full Module Library

End-to-End Invoice & Tax Management.

From invoice creation to FBR submission to tax return filing — every step automated and auditable.

Role Management & Access Control

User Roles & Permissions

Define granular roles — admin, tax consultant, accountant, viewer — each with precise access to invoicing, reports, and settings.

Multi-client Access

Tax consultants manage multiple client companies from a single login — each client's data is fully isolated.

Approval Workflows

Set approval chains for invoice submission, credit note issuance, and FBR transmission.

Audit Trail

Full log of every action — who created, edited, submitted, or cancelled any invoice or record.

Product & Service Catalogue

Product Management

Maintain a centralised catalogue of products and services with HS codes, tax classifications, and pricing.

Tax Rate Assignment

Assign applicable GST/sales tax rates per product — automatically applied on invoice generation.

Unit of Measure

Configure units of measure per product for accurate invoicing and FBR compliance.

Product Categories

Organise products into categories for reporting, filtering, and tax consolidation.

Customer Management

Customer Profiles

Maintain complete buyer records — NTN, STRN, business type, contact details, and billing addresses.

Buyer Classification

Classify buyers as registered, unregistered, export, or exempt — drives correct FBR invoice type.

Customer Ledger

Full transaction history per customer — invoices raised, credit notes issued, and outstanding balances.

Credit Limit Management

Set and enforce credit limits per customer to manage receivables risk.

Vendor Management

Vendor Profiles

Maintain supplier records — NTN, STRN, bank details, contact persons, and payment terms.

Purchase Invoice Tracking

Record and track vendor invoices for input tax credit reconciliation.

Vendor Ledger

Full vendor transaction history — purchases, payments, and outstanding payables.

Input Tax Register

Automatically populate input tax data from vendor invoices for monthly tax return preparation.

Sale Invoicing

Invoice Generation

Create compliant sales invoices with all required fields — buyer NTN/STRN, HS codes, tax amounts, and item details.

Multiple Invoice Types

Support for B2B, B2C, export, and exempt transaction invoice formats as required by FBR.

Draft & Preview

Save invoices as drafts, preview before finalisation, and generate PDF copies for customers.

Recurring Invoices

Set up recurring billing schedules for subscription or retainer-based clients.

Invoice Cancellation

Cancel erroneous invoices with FBR-compliant reversal entries and audit trail.

Credit Notes

Credit Note Issuance

Issue credit notes against specific invoices for returns, adjustments, or cancellations — FBR compliant.

Partial Credit Notes

Apply partial credits against an invoice for item-level returns or price adjustments.

Credit Note Register

Full register of all credit notes with reference to originating invoices and tax impact.

Customer Ledger Impact

Credit notes automatically update customer balances and output tax registers.

FBR e-Invoicing Integration

FBR API Integration

Direct integration with FBR's e-invoicing system — invoices are transmitted to FBR in real time upon finalisation.

IRN Generation

Automatic Invoice Reference Number (IRN) generation and embedding from FBR upon successful submission.

QR Code Embedding

FBR-mandated QR code automatically embedded on every invoice for verification.

Submission Status Tracking

Real-time status tracking for each invoice — pending, submitted, accepted, or rejected by FBR.

Error Handling & Resubmission

Automatic error capture for FBR rejections with guided correction and resubmission workflow.

FBR Portal Sync

Reconcile Quantus IMS records against FBR portal data to ensure no gaps in compliance.

Tax Consolidation & Reporting

Output Tax Register

Automated monthly output tax register compiled from all finalised invoices — ready for return filing.

Input Tax Register

Input tax register from vendor invoices for tax credit claim and net liability calculation.

Tax Liability Summary

Net tax payable computation — output tax minus admissible input tax — per return period.

Sales Tax Return Data

Pre-populated sales tax return data exports compatible with FBR Iris filing format.

Multi-client Tax Consolidation

Tax consultants consolidate and review tax positions across all client companies in one dashboard.

Period Comparison

Month-on-month and year-on-year tax and sales comparison reports for compliance review.

Analytics & Reporting

Sales Dashboard

Real-time overview of total invoiced value, tax collected, credit notes issued, and outstanding receivables.

Customer-wise Reports

Revenue, tax, and outstanding balance reports broken down by individual customer.

Product-wise Sales

Sales volume and revenue analysis by product or category to identify top-performing items.

FBR Compliance Report

Track submission rates, rejection rates, and pending transmissions to ensure full FBR compliance.

Custom Report Builder

Build and export ad-hoc reports across invoicing, tax, customer, and vendor data dimensions.

Ready to Automate Your FBR Compliance?

Request a live demo of Quantus IMS. We'll walk you through the FBR integration and show how your invoicing and tax workflow gets fully automated.

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