Sales Tax Annexure A & C Unlocking Services in Pakistan
Resolve Blocked Annexures & Recover Your Input Tax Credit
Get your blocked or mismatched Annexure A and Annexure C resolved on the FBR IRIS portal with TaxAccountant.pk. Our experts fix STRN mismatches, blacklisted supplier issues, and input tax disallowances for businesses across Islamabad, Karachi, Lahore, Faisalabad, Multan, Peshawar, Quetta, Sialkot, Gujranwala, Sargodha, Gujrat, Narowal, and Jhang.
FBR IRIS Specialists
24–48 Hr Resolution
Input Tax Recovery
Expert Legal Support
⚠️ Blocked Annexures = Disallowed Input Tax — Every month of delay increases your tax exposure. Get it resolved today before your return is rejected.
What Is Sales Tax Annexure A & C Unlocking?
Annexure A records your sales and Annexure C records your purchases in the FBR IRIS sales tax return. When a supplier’s STRN is inactive, blacklisted, or flagged for bogus invoices under Section 73 of the Sales Tax Act 1990, FBR automatically blocks your Annexure C entries and disallows the related input tax credit. Annexure unlocking is the expert process of verifying, correcting, and resubmitting these entries so your input tax is fully recovered and your return is accepted without penalty or audit notice.
Quick Facts
- Annexure A = sales records; Annexure C = purchase records in FBR IRIS
- Blocked annexures result in permanent loss of input tax credit
- Caused by inactive STRNs, blacklisted suppliers, or Section 73 flags
- Resolution requires expert IRIS navigation, ADC correspondence, and reconciliation
Documents Required for Annexure A & C Unlocking
Registration Details
- STRN certificate
- NTN and business name
- FBR IRIS login credentials
Sales Invoices (Annex A)
- All issued sales invoices for the period
- Credit notes and debit notes
- Sales summary by buyer STRN
Purchase Invoices (Annex C)
- Purchase invoices with supplier STRNs
- Import documents or GD copies
- Expense invoices claimed for input tax
FBR Notices & Flags
- Any FBR mismatch or disallowance notice
- Section 73 audit correspondence
- Previously rejected return acknowledgments
Return & Payment Records
- Last 3 months' return acknowledgments
- Tax payment challans (CPR)
- Bank statements for the filing period
Are You Facing These Annexure A & C Problems?
Annexure C
Blocked by
FBR
Your purchases are rejected because a supplier's STRN is inactive or blacklisted.
Input Tax
Disallowed
by IRIS
FBR has reversed your input tax credit due to an unverified or Section 73-flagged invoice.
Supplier STRN
Not on
ATL
Your vendor is not on the Active Taxpayer List, making all related purchases ineligible.
Mismatch
Between
Annex A & C
Buyer's Annexure A and your Annexure C figures do not reconcile, triggering an FBR notice.
Section 73
Fake Invoice
Flag
FBR has flagged your purchase as a flying or fake invoice under Section 73 of the Act.
Return
Rejected or
Incomplete
Your monthly return is stuck in draft or rejected because of unresolved annexure errors.
Who Needs Annexure A & C Unlocking in Pakistan?
Any registered business whose input tax has been disallowed or whose Annexure C is blocked in FBR IRIS needs immediate professional intervention to avoid permanent tax loss and compliance action.
⚠️ Risks of Ignoring Blocked Annexures
- Permanent loss of input tax credit for the blocked period
- FBR audit notice and scrutiny of all purchase records
- Sales tax demand notice for full disallowed input amount
- Penalties under Section 33 of the Sales Tax Act 1990
- STRN suspension or cancellation for repeated violations
- Legal prosecution for possession of fake or flying invoices
✅ Who Must Resolve Annexure Issues
- Businesses with input tax disallowed in the current or prior returns
- Manufacturers and importers with large purchase volumes in Annexure C
- Retailers whose suppliers have been de-listed from ATL
- Businesses that received a Section 73 or mismatch notice from FBR
- Companies filing late returns with blocked annexure fields in IRIS
- Exporters whose zero-rated Annexure A entries have been flagged or reversed
Why Businesses Choose TaxAccountant.pk
to Resolve Annexure Issues
FEATURS
- STRN & ATL Verification
- Section 73 Invoice Defense
- IRIS Portal Correction
- ADC / RTO Correspondence
- Input Tax Recovery Report
- FBR Notice Reply & Follow-up
- Reconciliation Statement
- Audit-Ready Documentation
SELF FILING
Ours Services
Our Annexure A & C Unlocking Services
Annexure C
Unblocking
Identify and resolve blocked purchase entries, verify supplier STRNs on ATL, and restore your input tax claim.
Annexure A
Mismatch Fix
Reconcile your sales records with buyer-side Annexure A data to eliminate IRIS mismatch flags and return rejections.
Section 73
Invoice Defense
Prepare a legal defense file for fake or flying invoice notices, respond to ADC/RTO, and protect your input tax.
Input Tax
Recovery
Calculate and recover the maximum eligible input tax disallowed due to annexure errors across multiple return periods.
Revised Return
Submission
Prepare and file revised sales tax returns after annexure corrections with full IRIS acknowledgment and summary.
Our 4-Step Annexure Unlocking Process
Case Assessment
We review your FBR IRIS account, identify all blocked annexure entries, and assess the nature of each disallowance.
Document Collection
You share invoices, STRN details, prior returns, and FBR notices. We verify each supplier on the ATL.
Correction & Filing
We correct all annexure entries in IRIS, prepare reconciliation statements, and file the corrected or revised return.
Confirmation & Report
You receive FBR acknowledgment, an input tax recovery report, and guidance to prevent future annexure blocks.
Trusted by Businesses Across Pakistan
What our Customers say?



Specifically Amazing in resolving Tax matters in fairly timely and transparent way
Stay blessed !
Profoundly grateful for your support and understanding

Meet Your Annexure & Compliance Experts
FBR-registered tax consultants resolving your annexure issues with accuracy, legal expertise, and full IRIS support.
Umair A R Mughal
Senior Tax Consultant
ITP / AR / PRC / SE
FBR NTN: 5036687-8 | ICAP CRN: 166299
Specialization
Ali Ahmad
FBR Tax Associate
Associate Member
Specialization
Recent Client Success Stories
Manufacturer — Faisalabad
Resolved 9 months of blocked Annexure C entries due to blacklisted supplier STRNs, recovered PKR 2.8M in input tax credit, and filed all revised returns with full FBR acknowledgment.
Retail Distributor — Islamabad
Defended a Section 73 fake invoice notice, submitted reconciliation statement to RTO Islamabad, and restored Annexure A & C without penalty or STRN suspension.
Benefits of Resolving Annexure A & C Issues Promptly
Recover Blocked
Input Tax
Reclaim all eligible input tax disallowed due to blocked Annexure C entries.
Avoid FBR
Audit Notices
Clean annexure records keep your IRIS account audit-free and notice-free.
Accepted Monthly
Returns
Corrected annexures ensure your returns are filed and accepted without rejection.
Section 73
Legal Protection
Expert defense documentation protects you from fake invoice prosecution.
Restored STRN
Status
Resolve annexure issues before FBR suspends or cancels your registration.
Improved Tax
Credibility
Clean tax records strengthen your business profile for banking and contracts.
Frequently Asked Questions — Annexure A & C Unlocking
What is Annexure A and Annexure C in FBR sales tax?
Annexure A records all sales made by your business during a tax period. Annexure C records all purchases. Both are filed as part of your monthly sales tax return on the FBR IRIS portal under the Sales Tax Act 1990.
Why is my Annexure C blocked in FBR IRIS?
Annexure C is blocked when a supplier’s STRN is inactive, suspended, or blacklisted by FBR. It is also blocked when FBR flags the purchase invoice under Section 73 as a fake or flying invoice, or when the supplier is not on the Active Taxpayer List (ATL).
What happens if I ignore a blocked Annexure C?
Ignoring a blocked Annexure C results in permanent disallowance of your input tax credit for that period, FBR audit notices, demand notices for the disallowed amount, and possible STRN suspension under Section 33 of the Sales Tax Act 1990.
How long does annexure unlocking take?
Straightforward cases involving STRN verification and IRIS correction are resolved within 24–72 hours. Section 73 notices requiring ADC or RTO correspondence may take 5–15 business days depending on FBR’s response timeline.
What is Section 73 of the Sales Tax Act 1990?
Section 73 prohibits payment for taxable supplies above PKR 50,000 through cash. Purchases made in cash above this threshold are ineligible for input tax. FBR uses this section to flag transactions suspected of being fake or flying invoices.
Can I file a revised sales tax return after annexure correction?
Yes. Once the annexure issues are corrected in FBR IRIS, a revised return can be filed for the affected period. TaxAccountant.pk prepares and files the revised return and sends you the FBR acknowledgment with a full input tax recovery report.
How much does annexure unlocking cost?
Single annexure review and correction starts from PKR 8,000. Combined Annexure A and C unlocking ranges from PKR 12,000 to PKR 15,000. Complex Section 73 notice defense cases are priced based on complexity. Contact us on WhatsApp for a transparent quote.
What is the Active Taxpayer List (ATL) and why does it matter?
The ATL is FBR’s published list of taxpayers who have filed their annual income tax returns. Purchases from suppliers not on the ATL attract a 3% extra tax under Section 236W of the Income Tax Ordinance and may make your Annexure C entries ineligible for input tax adjustment.
Do you provide annexure unlocking services across Pakistan?
Yes. TaxAccountant.pk provides annexure unlocking services in Islamabad, Rawalpindi, Lahore, Karachi, Faisalabad, Multan, Sialkot, and all 13 target cities. Everything is handled 100% online via IRIS and secure document sharing.
What is the difference between Annexure A and Annexure B?
Annexure A records local taxable sales. Annexure B records imports declared in the return. Annexure C records local purchases. Annexure E records goods purchased under SRO exemptions. TaxAccountant.pk handles corrections across all annexures as part of the unlocking service.
Disclaimer: Information on this page is for general guidance only and does not constitute professional tax advice. Consult a qualified FBR-registered tax practitioner for advice specific to your business situation. Tax laws and FBR regulations are subject to change.
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