SRB Sales Tax: Sindh Services Tax Guide 2026

What Is SRB Sales Tax?

SRB sales tax is the provincial sales tax on services administered by the Sindh Revenue Board (SRB). After the 18th Constitutional Amendment (2010) devolved the right to tax services to the provinces, Sindh moved fastest — establishing the SRB in 2010 and enacting the Sindh Sales Tax on Services Act 2011. Every taxable service rendered in Sindh, or originating from a Sindh-based service provider, falls under SRB jurisdiction — separate from the federal FBR and from the other provincial authorities (PRA in Punjab, KPRA in Khyber Pakhtunkhwa, BRA in Balochistan).

Karachi is Pakistan's commercial capital, which makes SRB sales tax the most commercially significant of the four provincial sales-tax regimes. If you operate any kind of service business in Sindh — IT, banking, telecom, advertising, real estate, hospitality, professional services — SRB compliance is your primary indirect-tax obligation, not federal sales tax. Most service businesses still get this wrong; FBR collects sales tax on goods (and on services in ICT only), while SRB collects sales tax on services in Sindh.

The SRB system runs on the e-filing portal at e.srb.gos.pk. Every registered service provider files a monthly return, deposits tax through scheduled banks, and maintains compliance against the Sindh schedule of taxable services.

Who Needs to Register for SRB Sales Tax?

Registration with the SRB is mandatory for any person who provides a taxable service in Sindh, regardless of turnover, unless that specific service is excluded by name from the Second Schedule of the Sindh Sales Tax on Services Act 2011. The Sindh schedule is the most comprehensive of the four provinces — the practical question is rarely “is my service covered?” but “which sub-category and which rate applies?”

Categories of service providers required to register for SRB sales tax include (non-exhaustive):

• Telecommunication services — the largest single category by tax revenue in Sindh, covering mobile, fixed line, internet, and IPTV operators
• Banking, insurance, asset management, and financial services — Karachi being the financial hub makes this material
• IT and ITES providers — software development, IT consulting, BPO, call centres, cloud services
• Advertising agencies — including digital advertising and social-media intermediaries
• Hotels, restaurants, marriage halls, caterers
• Courier, logistics, freight forwarding, customs clearing (significant in port-based Karachi)
• Construction, contractors, real-estate agents, property developers
• Professional services — lawyers, chartered accountants, ACCA-led firms, consultants, architects, engineers
• Beauty salons, gyms, spas, photography studios
• Educational institutions charging certain fees (with exemptions for primary/secondary schooling)

If you operate from outside Sindh but render services to Sindh-located recipients, you may still be liable for SRB sales tax on those service receipts. The SRB has been more aggressive than other provincial authorities on the “destination principle” — taxing services consumed in Sindh regardless of the provider's location. Ask us if you're unsure which side of the line your business sits on.

Sindh Sales Tax Rates by Service Category

SRB sales tax rates depend on the service category. The standard rate is 13% — three percentage points lower than Punjab's 16% and the lowest among the four provincial regimes. The Sindh government has carved out reduced rates for specific sectors. As of 2026, the rate structure includes:

• 13% standard rate — applies to most services not specifically covered elsewhere: legal, advertising, telecom, restaurants, hotels above the threshold, contractors, courier, salons, and the broad “everything not otherwise listed” bucket
• 3% / 5% / 8% reduced rates — applied to certain notified sectors including IT and ITES service providers, debt-collection services, and specific construction sub-categories. The IT rate has moved between 3%, 5% and 8% across recent budgets — always verify the current rate against the latest SRB notification
• Zero-rated services — service exports from Sindh (subject to State Bank of Pakistan-routed receipts in foreign exchange and other conditions)
• Exempt services — primary and secondary education, certain healthcare services, services rendered to diplomatic missions, and others as scheduled

The Sindh sales tax rate is harmonised downward compared to other provinces, which is why the SRB watches inter-provincial cross-billing closely. If you can show a service was substantively rendered in Sindh and not in (say) Punjab, you may legitimately be in the 13% band rather than the 16% one — but you need the documentation to support it. The SRB publishes rate updates and SROs at e.srb.gos.pk; always check the current notification before quoting a rate to a client.

How SRB Sales Tax Works — The Monthly Cycle

SRB sales tax is an output-tax-and-input-tax system. The flow each month:

1. You charge SRB sales tax on every taxable service invoice at the applicable rate. The invoice must show your STRN (SRB-issued), service description, base amount, sales tax amount, and total.
2. You collect input-tax adjustments on the SRB sales tax you yourself paid on inputs — typically professional services, advertising, courier, and other Sindh-rendered services you used for your taxable activity. Adjustment is allowed only against SRB invoices that meet the prescribed form.
3. You file the monthly return on the SRB e-portal, listing all output supplies and input-tax adjustments. Returns are filed by the 18th of the month following the tax period, with the deposit due before filing.
4. You deposit the net tax through any scheduled bank using the e-payment slip generated by the portal.
5. You retain records for a minimum of 6 years — the Sindh Sales Tax on Services Act mandates this, and a desk audit in year 5 is not unusual for active service businesses.

SRB's reconciliation engine is the most aggressive of the four provincial authorities — it cross-matches your declared output against your B2B clients' declared input, against your withholding-agent statements, and against your federal income-tax return turnover. A mismatch on any axis triggers a notice. This is why SRB sales tax is bundled into our managed Pakistan sales tax service — fewer hands on the data, fewer mismatches.

SRB Monthly Filing Process and Deadlines

The SRB monthly return is filed online through the e-portal. The current process:

1. Login at e.srb.gos.pk with your registered STRN credentials.
2. Open the “sales tax return” module for the relevant month.
3. Populate output and input data — invoice-level for high-volume providers, summary annexures for low-volume.
4. Review the auto-calculated tax payable after input-tax adjustment.
5. Generate the e-payment slip and pay through any scheduled bank or online banking before the filing deadline.
6. Submit the return on the portal once the payment confirmation reflects.

Deadlines:

• Filing deadline: 18th of the following month for most categories
• Payment deadline: on or before filing — late payment triggers default surcharge under the Act
• Annual statement: separately filed where applicable, typically tied to your income-tax year-end

Holidays sometimes shift deadlines, and the SRB occasionally extends the filing date through a notification on the portal. Don't rely on the extension being announced — file by the original deadline and treat any extension as a bonus.

Withholding Agents Under the Sindh Sales Tax on Services Act

Some recipients of taxable services are required to withhold SRB sales tax at source from their payments to service providers — either fully or partially — and deposit it directly with the SRB. The Sindh Sales Tax Special Procedure (Withholding) Rules 2014 prescribe the withholding-agent categories and rates.

Common withholding agents:

• Federal and Sindh government departments and autonomous bodies
• Public-sector enterprises and listed companies
• Companies meeting prescribed turnover thresholds
• Recipients explicitly notified by SRB in supplementary SROs

If you're a withholding agent, you have a separate compliance file: monthly withholding statements, deposits, and reconciliation against your input-tax adjustments. Missing a withholding obligation is a separate liability under the Act — and one of the more common reasons SRB opens a desk audit on Karachi-based listed companies.

Penalties for Non-Compliance with SRB Sales Tax

The Sindh Sales Tax on Services Act 2011 provides a layered penalty regime under Section 43 and related provisions. Common defaults and the consequences:

• Failure to register — penalty plus default surcharge plus liability for tax that should have been collected from day one
• Late filing of return — fixed penalty per default plus surcharge on any unpaid amount
• Late payment of tax — default surcharge typically calculated at the prescribed rate per annum on the outstanding amount
• Issuing an invoice without an STRN or with incorrect particulars — penalty per invoice, escalating for repeat defaults
• Failure to maintain prescribed records — penalty plus refusal of input-tax adjustments at audit
• Wilful evasion or fraud — escalates to prosecution under the Act, including possible imprisonment in extreme cases

The bigger commercial cost beyond the headline penalty: your client's input-tax disallowance. Karachi B2B buyers — especially listed companies with their own SRB compliance — are unforgiving on suppliers whose invoices don't meet SRB requirements. Your invoices get rejected, your input tax is denied, and you find yourself competing on a tax-inclusive basis against compliant providers.

SRB vs FBR vs PRA vs KPRA — What's the Difference?

Service businesses operating across multiple provinces face the question of which authority governs which transaction. The split:

• FBR (Federal Board of Revenue) — sales tax on goods federally, plus sales tax on services rendered in Islamabad Capital Territory only
• SRB (Sindh Revenue Board) — sales tax on services in Sindh — 13% standard
• PRA (Punjab Revenue Authority) — sales tax on services in Punjab — 16% standard. See our complete PRA sales tax guide
• KPRA (Khyber Pakhtunkhwa Revenue Authority) — sales tax on services in Khyber Pakhtunkhwa
• BRA (Balochistan Revenue Authority) — sales tax on services in Balochistan

If you operate in multiple provinces, you may need multiple registrations — one per province where you render services, plus FBR for ICT services. The rate spread (13% in Sindh vs 16% in Punjab) means careful invoicing and proper jurisdictional sourcing actually saves you money over time. We handle multi-province registrations and inter-provincial sourcing as part of our Pakistan sales tax service.

How to Register for SRB Sales Tax — Step by Step

1. Get your FBR NTN first. If you don't already have one, file an FBR registration via IRIS — the SRB registration uses your NTN as the foundation. See our walkthrough on FBR registration verification.
2. Compile the required documents: CNIC of the principal officer, NTN certificate, business letterhead, electricity bill of the registered office in Sindh, lease agreement or ownership proof, bank account maintenance certificate, and a brief business profile.
3. Apply online through the SRB portal at e.srb.gos.pk. The application asks for service category classification — pick this carefully because it drives your rate.
4. Site verification. An SRB officer typically visits the registered business address before issuing the STRN. Have your office staffed and the documents physically available on the day of the visit. Karachi office verifications can take longer than other cities — plan for 7–10 business days.
5. Receive the STRN. Once approved, you receive a sales tax registration number from SRB and can start issuing tax invoices. The STRN must be visible on every invoice from that point on.

Common Questions About SRB Sales Tax

Do I need SRB registration if I'm already FBR-registered?

Yes, if you provide services in Sindh. FBR sales tax registration covers federal sales tax on goods and ICT services only — it does not cover services in Sindh. You need a separate SRB STRN for any taxable service rendered in or from Sindh.

What is the current SRB sales tax rate for IT and software services?

IT and IT-enabled services have benefited from reduced rates that have moved between 3%, 5%, and 8% across recent Sindh budgets, with conditions tied to whether earnings are from foreign sources. Always verify the current rate against the latest SRB notification before quoting it on an invoice.

How do I claim input-tax adjustment under SRB sales tax?

Input-tax adjustment is claimed on the monthly return against SRB-tax-bearing invoices issued to your business by other SRB-registered service providers. The invoices must meet the prescribed form, be entered into the return in the same period (or within the carry-forward window), and not relate to exempt or zero-rated outputs except where specifically allowed.

Can I file my SRB return after the 18th?

You can — but you'll trigger a late-filing penalty plus default surcharge on any unpaid tax. The SRB system is automated; the moment the deadline passes the surcharge meter starts. There is no “grace period”.

I render services from Karachi to a client in Lahore — which authority taxes it?

This is the question every Karachi-based service business faces. The general principle is that the service is taxed where it is rendered, but if the recipient consumes it elsewhere, the destination province may also have a claim. SRB has historically taken an aggressive view that services originating in Sindh attract SRB tax even when the recipient is in another province. The defensive approach is to register with both authorities, charge the local rate per invoice, and claim cross-provincial relief only where there's a clear rule supporting it. Get advice before you set up the invoice template — fixing this later is harder than getting it right at the start.

Is SRB sales tax recoverable on services I bought from outside Sindh?

Cross-provincial input-tax adjustment has been the subject of long-running litigation. The general position is that input tax paid to SRB is adjustable against SRB output, but input tax paid to PRA / KPRA / BRA on services received in Sindh follows different rules and is often not directly adjustable. This is where multi-province sales tax businesses lose the most money — work this out at the structuring stage, not at the audit stage.

Need Help with SRB Sales Tax?

Karachi is Pakistan's largest commercial economy, and SRB sales tax is the highest-volume provincial sales-tax regime by collection. The 13% rate is friendly relative to other provinces, but the SRB's automated reconciliation engine is the most aggressive in the country — small invoice errors compound into notices faster here than anywhere else.

At Fair Tax International, we run end-to-end SRB registration and monthly compliance as part of our broader Pakistan sales tax service. ACCA-led, fixed monthly fee, multi-province coverage if you operate beyond Sindh, and reconciliation against your bookkeeping so the return ties to your books before it ties to the SRB. Contact us for a fixed-fee quote.