HSN and SAC Codes in GST: Full Forms, Differences and Examples

HSN and SAC codes help businesses classify goods and services correctly on GST invoices and returns. When a code is mandatory, leaving it blank or choosing the wrong classification can result in an incorrect GST rate, input tax credit mismatches, return errors or follow-up from tax authorities.

This guide explains what HSN and SAC codes mean, how they differ, when they’re mandatory, and how to find the right code to ensure accurate invoicing and GST compliance.

What Is an HSN Code? Full Form and Meaning Under GST

HSN stands for Harmonized System of Nomenclature. It is an international system developed by the World Customs Organization to classify goods for taxation, customs and international trade. More than 200 countries and economies use the system.

India adopted HSN coding in its GST regime to ensure uniform goods classification. For Indian businesses, HSN codes align product classification with international standards, simplifying export/import documentation and customs processes.

How HSN Codes Are Structured

TThe HSN system organizes goods into sections, chapters, headings and subheadings. India can use up to eight digits for detailed classification, while GST invoices may require fewer digits depending on turnover and transaction type.

• First 2 digits: Chapter or broad product category
• Next 2 digits: Heading within that chapter
• Next 2 digits: Subheading for further classification
• Last 2 digits: Indian tariff item or detailed subclassification

HSN Code Example: Basmati Rice

• 10063020: Basmati rice
• 10: Chapter covering cereals
• 1006: Heading for rice
• 1006.30: Semi-milled or wholly milled rice
• 1006.30.20: Basmati rice tariff item

The first six digits follow the international HSN structure. India adds two more digits where a more granular tariff classification is required, particularly for customs and import-export documentation.

What Is a SAC Code? Full Form and Meaning Under GST

SAC stands for Services Accounting Code, a classification system for services under GST. Unlike goods classified through the international HSN framework, SAC codes are used within India’s GST system.

Each service classification uses a six-digit code beginning with 99. The remaining four digits identify the service group and detailed category.

How SAC Codes Are Structured

The structure follows 99XXYY. In this structure, 99 signifies a service code. XX represents the primary service classification (rental, professional, transportation, etc.), and YY represents the detailed service within that category.

Example: SAC 997212 covers rental or leasing services involving non-residential property. The first two digits, 99, identify services; the next two indicate the broader group; and the final two identify the specific service. Confirm the current GST rate separately because tax rates can change without the classification code changing.

Common HSN and SAC Codes by Sector

The examples below show how goods and services are grouped. The complete classification may require additional digits.

Common HSN Headings for Goods

Product category	Illustrative HSN heading
Cotton T-shirts	6109
Trousers	6203
Leather footwear	6403
Rice	1006
Wheat flour	1101
Computers and laptops	8471
Mobile phones	8517
Motor cars	8703
Motorcycles	8711

Common SAC Codes for Services

Service category	Illustrative SAC code
Restaurant services	996331
Hotel accommodation services	996311
IT consulting and support services	998313
IT design and development services	998314
Road transport of goods	996511

These examples are starting points, not substitutes for classification. Always check the complete product or service description and confirm the current rate using the official lookup. Cashfree’s guide to current GST rates and slabs can help you understand the rate structure after you identify the correct code.

Also Read: What Is GST? Full Form, Meaning, Types and Benefits

Popular GST HSN Codes for Cement, Laptops, Rice, Batteries, ACs, Paint and Sarees

Searches such as “cement HSN code” or “battery HSN code” sound straightforward, but some product names cover several classifications. The correct code can depend on composition, construction, intended use, packaging or whether the item is rechargeable. Use the following headings as a starting point and confirm the final digits on the GST portal.

Product	Common HSN heading	What to check before using it
Cement	2523	The detailed code varies for Portland cement, aluminous cement, slag cement and other hydraulic cements.
Laptop	8471	Portable automatic data-processing machines are generally classified within this heading; the complete tariff item depends on the product configuration.
Rice	1006	The final classification depends on whether the rice is paddy, husked, semi-milled, wholly milled or broken. Packaging and labelling can also affect GST treatment.
Battery	8506 or 8507	HSN 8506 generally covers primary cells and batteries, while 8507 covers rechargeable electric accumulators. Chemistry and intended use can affect the detailed code.
Air conditioner (AC)	8415	The detailed code depends on whether the unit is a split, window, packaged or another type of air-conditioning machine.
Paint	3208, 3209 or 3210	Classification depends on the paint base and composition. Solvent-based, water-based and other paints can fall under different headings.
Saree	Varies by fabric and construction	A saree does not have one universal HSN code. Silk, cotton, synthetic and handloom sarees are classified according to their material and weaving characteristics.

HSN vs SAC Codes: Key Differences

While both systems serve classification purposes under GST, they differ significantly in application and structure.

Aspect	HSN code	SAC code
Full form	Harmonized System of Nomenclature	Services Accounting Code
Applies to	Goods	Services
Code length	Up to 8 digits in India	6 digits
Prefix	Varies by product category	Starts with 99
Framework	International HSN framework with India-specific extensions	Indian GST service classification
Example	10063020 for a specified category of basmati rice	996331 for restaurant services
Classification basis	Material, composition, use and product characteristics	Nature and purpose of the service

Businesses selling physical products use HSN codes. Service providers use SAC codes. Companies offering both goods and services may need both systems. Misclassifying a service as a good, or the reverse, can create invoice and return mismatches.

Why HSN and SAC Codes Matter for GST Compliance

Incorrect or missing codes can affect tax rates, invoices, returns and ITC matching.

Applying the Correct GST Rate

Each HSN or SAC code is linked to a particular GST rate (0%, 5%, 18%, 40%). Using the proper code allows clients to pay the correct amount. Applying a code incorrectly leads to undercharging or overcharging. Codes remove ambiguity by clearly determining which rate applies and directly influence Input Tax Credit claims for buyers and sellers.

Meeting GST Invoice and Return Requirements

Once a business crosses the applicable turnover threshold, it must report the required HSN digits for goods and use the relevant SAC for services. GSTR-1 also includes an HSN/SAC-wise summary of outward supplies. Missing or inaccurate classifications can cause validation errors, mismatches or follow-up during assessment.

Reducing Classification Risk During Audits

Tax authorities use HSN and SAC classifications to compare invoices, returns and the tax paid. Consistent coding helps finance teams explain how a rate was selected and reduces avoidable discrepancies during review.

Supporting Return Filing and ITC Reconciliation

Accurate coding makes GST return filing and invoice reconciliation easier. It also helps buyers match purchase records with the supplier’s reported sales before claiming credit.

Also read: Do You Need GST to Sell Online in India? Rules, Limits & TCS Explained

HSN and SAC Code Requirements for GST Invoices and Returns

The same classification should remain consistent across registration details, invoices and returns unless the product or service changes.

GST Registration

During GST registration, a business identifies the goods or services it supplies using the corresponding classifications. This creates a consistent starting point for invoicing and return filing.

GST Invoices for B2B and B2C Transactions

Tax invoices shall carry HSN for goods or SAC for services for businesses above the turnover limits. B2B codes are mandatory for input credit. B2C rules are more flexible for smaller firms.

GST Returns and GSTR-1 Reporting

GSTR-1 requires HSN-wise summaries, mapping the total taxable value and GST per code. Incorrect or missing codes can flag return errors or delay processing.

Turnover-Based HSN Digit Requirements

• Aggregate turnover up to ₹5 crore: Four-digit HSN on B2B tax invoices. Smaller businesses should still confirm the current requirement for B2C invoices.
• Aggregate turnover above ₹5 crore: Six-digit HSN on invoices.
• Imports and exports: The complete eight-digit Indian tariff classification is generally required for customs documentation.
• Services: SAC classifications contain six digits. Use the complete applicable code where invoice and return rules require it.

These rules can be amended through notifications, so businesses should check the latest GST rules and compliance updates before changing invoice templates.

How to Find the Correct HSN or SAC Code

Use the following process instead of selecting the first search result that resembles the item name.

1. Describe the Product or Service Precisely

• Record exactly what you sell or provide.
• For goods, note the material, composition, function, form and intended use.
• For services, identify the primary activity and what the customer receives.

For example, leather shoes fall under footwear, while payroll implementation and ongoing software access may need to be assessed as separate service components.

2. Use the GST Portal’s Official HSN and SAC Search

• Visit the GST portal’s “Search HSN/SAC” section
• Enter a product/service keyword for relevant suggestions
• Review accompanying code descriptions carefully
• Always refer to the latest portal version for current codes

3. Cross-Check the Description and Current GST Rate

• Don’t assume based on the title, read full code descriptions
• Check if the GST rate aligns with industry norms for that code
• Mismatched GST rates are often a sign of code error
• Always match the rate and classification before finalizing invoices

4. Review the Code When Products or Rules Change

Use government directories and notifications as the primary reference. Review classifications when a product’s material, packaging or intended use changes, and seek professional advice when two headings appear equally plausible. Finance teams should also distinguish intra-state supplies, where CGST and SGST generally apply, from inter-state supplies governed by IGST.