How to File a Sales Tax Return in Pakistan: Step-by-Step Guide

Every person registered for federal sales tax must file the required sales tax return for each applicable tax period. Filing is not limited to months in which tax is payable. A registered person may still need to submit a nil return when there was no taxable activity.

This guide explains the standard FBR process for filing a monthly Sales Tax and Federal Excise Return through IRIS. Special industries, quarterly filers and persons governed by provincial sales tax laws may follow different rules.

Last reviewed: October 2026.

Who Must File a Sales Tax Return?

A person registered with FBR under the Sales Tax Act, 1990 must file the return prescribed for that registration. This commonly includes registered manufacturers, importers, wholesalers, distributors, retailers and other persons carrying on taxable activities.

Federal sales tax primarily applies to goods. Sales tax on services is generally administered through separate provincial or territorial systems. A service provider registered with PRA, SRB, KPRA, BRA or another relevant authority must use that authority’s return and filing procedure.

What Is a Sales Tax Return?

A sales tax return is the registered person’s declaration of transactions for a tax period. It normally reports:

• taxable, exempt and zero-rated supplies;
• output tax charged on sales;
• purchases and admissible input tax;
• imports and exports;
• sales tax withheld or deducted;
• credit notes, debit notes and adjustments;
• further tax and other applicable amounts;
• tax payable, excess input tax or refund position; and
• information required in the return annexures.

The return is not simply a payment form. Its invoice data and annexures form part of the taxpayer’s compliance record and may be cross-matched with information reported by suppliers, buyers, customs and withholding agents.

Standard Monthly Sales Tax Deadlines

Under FBR’s standard procedure, the principal monthly stages are:

• 10th day: submit Annexure C or the required sales information;
• 15th day: pay the sales tax due; and
• 18th day: electronically submit the completed return.

These dates fall in the month following the relevant tax period. Different dates or procedures may apply to specified categories, and FBR can announce an extension for a particular period. Always check the current FBR notice before relying on an extension.

Example

For taxable supplies made in September, the standard sequence is sales information by 10 October, payment by 15 October and electronic filing by 18 October, unless an official extension or special rule applies.

Records to Prepare Before Filing

Complete the accounting and invoice review before opening the return. You may need:

• sales invoices and credit or debit notes;
• purchase invoices carrying valid supplier details;
• import goods declarations and customs documents;
• export documents and evidence of export;
• bank statements and payment records;
• withholding certificates and sales tax withholding details;
• stock, production and consumption records where applicable;
• previous return balances and carried-forward input tax;
• fixed-asset purchase details; and
• records supporting exemptions, zero-rating or special rates.

Reconcile sales with the general ledger, bank records, point-of-sale system and applicable e-invoicing data. Reconcile purchases with supplier invoices and information available in IRIS. Do not claim input tax merely because an amount appears in the accounting records.

How to File a Sales Tax Return Through FBR IRIS

1. Sign In to IRIS

Log in through the official FBR IRIS portal using the registered person’s credentials. Confirm that the profile and sales tax registration are active.

2. Open the Return

From the Declaration menu, select the return under section 26(1) for Sales Tax and Federal Excise. Select the correct tax year and monthly tax period. FBR also provides an official sales tax return filing guide.

3. Review Invoice Management

Check purchase and sales invoices in the Invoice Management area. Add or correct eligible invoices where the system permits. Review third-party information instead of assuming every automatically displayed invoice is correct.

4. Complete the Relevant Annexures

Enter or review purchases, imports, sales, exports, debit and credit notes, withholding information and other required details. The annexures depend on the taxpayer’s activities.

5. Check Input Tax

Confirm that each input-tax claim is supported by a valid tax invoice and is legally admissible. Check registration status, business use, payment requirements and statutory restrictions. An invoice appearing in IRIS does not automatically establish entitlement to input tax.

6. Confirm Output Tax and Adjustments

Reconcile output tax with all taxable supplies. Include further tax, special-rate supplies and adjustments where applicable. Review any credit notes or debit notes against the corresponding transaction.

7. Review the Computation

Check the system-calculated tax payable, input-tax balance, withholding credit and carried-forward amount. Investigate unexpected differences before making payment.

8. Create and Pay the PSID

Where tax is payable, generate the payment slip or PSID and pay through an authorized banking channel by the applicable payment deadline. Confirm that the payment is reflected in the return.

9. Submit the Return

Review every annexure and declaration, then submit the return electronically by the filing deadline. Save the acknowledgement, payment evidence and a complete copy of the filed return.

Practical Filing Example

A registered trader has taxable sales of Rs. 2,000,000 at 18%. Output tax is Rs. 360,000. Its verified purchases carry Rs. 230,000 of admissible input tax. Ignoring other adjustments, the net tax is Rs. 130,000.

The trader should not simply pay Rs. 130,000 and stop. It must ensure that the sales and purchase invoices are correctly reported, complete the required annexures, deposit the tax and electronically submit the return.

What If There Was No Business Activity?

A registered person should not assume that no activity means no filing. If the registration remained active, a nil return may be required for the tax period.

Repeated non-filing can result in an inactive or suspended status and other compliance consequences. If the business has permanently stopped making taxable supplies, consider whether formal deregistration is appropriate instead of continuing to miss returns.

One Return for Multiple Business Activities

A registered person generally files one federal sales tax return for the registration and reports the relevant activities in that return. Separate branches or business lines do not automatically require separate federal returns.

This does not combine federal sales tax on goods with provincial sales tax on services. A business registered with more than one tax authority may have separate returns for each authority.

Late Filing and Extension of Time

A late return should be filed as soon as possible. Late filing or late payment can lead to penalties, default surcharge and restrictions on the taxpayer’s sales tax status.

Section 26AB permits a registered person to apply to the Commissioner for an extension of time. The application should be made by the original due date and supported by a valid reason, such as absence from Pakistan, sickness, misadventure or another reasonable cause. An extension of filing time does not automatically change the due date for payment or eliminate default surcharge.

Do not wait for a notice before correcting non-filing. First reconcile the outstanding periods, calculate the tax and surcharge, then file in the correct order.

How to Revise a Sales Tax Return

A registered person may seek to revise a filed return to correct an omission or wrong declaration. The general FBR guidance on revised returns refers to revision within 120 days of filing the original return, subject to the applicable approval process and current legal restrictions.

Before revising, identify the exact error and its effect on invoices, input tax, output tax, payment and subsequent returns. A revision can change carried-forward balances, so later periods may also require review.

Example

A taxpayer discovers that a taxable sales invoice was omitted from a filed return. Adding it increases output tax and may create additional tax and default surcharge. The taxpayer should correct the invoice data, prepare the revision request and review the effect on later returns.

Common Sales Tax Return Mistakes

• using the income-tax ATL instead of checking sales-tax status;
• claiming input tax without a valid or matched invoice;
• reporting sales in the wrong tax period;
• ignoring further tax on applicable supplies;
• failing to reconcile customs, POS or e-invoicing data;
• paying tax but forgetting to submit the return;
• filing a nil return despite actual transactions;
• mixing provincial service-tax figures with the federal goods return; and
• failing to preserve the filed return and payment evidence.

Frequently Asked Questions

Does every sales-tax-registered person file monthly?

Most persons under the standard federal procedure file monthly. Certain categories may follow a quarterly or special procedure.

What are the standard FBR filing dates?

Under the standard procedure, sales information is due by the 10th, payment by the 15th and electronic submission by the 18th of the following month.

Do I file when there are no sales?

Yes, a nil return may still be required while the registration remains active.

Can I claim every purchase invoice shown in IRIS?

No. The input tax must satisfy the legal and documentary conditions. System visibility alone does not make the claim admissible.

Can I revise a return without reviewing later months?

You should review later periods because a revision may alter carried-forward balances and invoice matching.

Is federal sales tax filing the same as provincial sales tax filing?

No. FBR generally administers sales tax on goods, while separate provincial or territorial authorities administer sales tax on services.

Need Help Filing a Sales Tax Return?

Sales tax filing requires accurate invoice data, reconciled accounts and correct treatment of input and output tax. We can review your records, prepare the return, identify discrepancies and help you address late or revised filings.

Contact 4SYTE for sales tax return preparation and compliance assistance.