What Are HSN & SAC Codes in GST?
HSN (Harmonized System of Nomenclature) is an internationally standardized system developed by the World Customs Organization (WCO) to classify goods (products) in a systematic manner. It uses a 6-digit code at the international level, which countries can extend to 8 digits for more specific classification.
SAC (Services Accounting Code) is a classification system specifically for services (similar to HSN for goods). It uses a 6-digit code to classify various service categories.
🔍 Why HSN/SAC Classification Matters
- •Determines the APPLICABLE GST RATE for your goods/services (5%, 12%, 18%, 28%, or exempt/nil)
- •Mandatory disclosure on tax invoices for businesses with turnover >₹5 crore (4-digit minimum, 6-digit recommended)
- •Required for GST return filing (GSTR-1) — invoice-wise HSN/SAC reporting for high-turnover businesses
- •Facilitates INPUT TAX CREDIT (ITC) matching and reconciliation
- •Used by GST authorities for tax compliance monitoring and data analytics
- •Critical for EXPORT documentation (8-digit HSN mandatory on shipping bills and export invoices)
- •Helps in classification dispute resolution (clear classification = fewer disputes with department)
📊 HSN Code Structure (for Goods)
Example: HSN Code for "Cotton Fabric"
52 - Chapter (Textiles - Cotton)
5208 - 4-digit (Woven fabrics of cotton)
520821 - 6-digit (Plain weave, not more than 100g/m²)
52082110 - 8-digit (Unbleached)
GST Rate for HSN 5208: 5% (as per GST rate schedule)
📋 SAC Code Structure (for Services)
Example: SAC Code for "Accounting Services"
99 - Major Group (Professional, technical services)
998 - Sub-group (Accounting, auditing, bookkeeping)
998311 - 6-digit SAC (Financial auditing services)
GST Rate for SAC 9983: 18% (as per GST rate schedule)
📌 Common SAC Codes
- →9954 - Construction services (18%)
- →9965 - Transport services (5%-18%)
- →9983 - Accounting, CA, legal services (18%)
- →9987 - Repair & maintenance (18%)
- →9973 - Restaurant services (5%)
- →9993 - Rental services (18%)
⚖️ HSN/SAC Digit Requirement on Invoice
📊 Based on Aggregate Turnover
| Turnover (Previous FY) | HSN/SAC Requirement |
|---|---|
| Up to ₹5 crore | Optional (recommended for clarity) |
| Above ₹5 crore | 4-digit minimum (6-digit recommended) |
| For Exports | 8-digit mandatory (all turnover levels) |
Best Practice: Always mention 6-digit HSN/SAC on invoices (even if turnover is below ₹5 crore) — improves compliance, reduces queries, and facilitates ITC reconciliation.
🚫 Consequences of Wrong HSN/SAC Classification
- →Charging WRONG GST RATE (e.g., 18% instead of 5%) — customer refuses to pay excess tax
- →Undercharging tax (e.g., 5% instead of 18%) — department raises DEMAND for differential tax + 18% interest + penalty
- →ITC DENIAL to your customer (if invoice shows wrong HSN/rate, buyer cannot claim correct ITC)
- →INVOICE MISMATCH in GSTR-2B reconciliation — ITC mismatch flags
- →Penalty under Section 125 (₹10,000 or tax amount, whichever is higher) for wrong classification
- →Classification DISPUTES with GST authorities — lengthy proceedings, advance ruling required
- →EXPORT issues — customs may reject shipment if HSN doesn't match product description
Taxvio, based in Khatauli (Muzaffarnagar, UP), provides expert HSN/SAC classification advisory — product/service analysis, GST rate determination, invoice audit, classification certification, and dispute resolution across Uttar Pradesh, Noida, Delhi NCR, and pan-India.
How We Classify HSN/SAC Codes for Your Business
Our expert classification process ensures accurate HSN/SAC codes and correct GST rate application:
Product/Service Description Collection
1-2 daysWe collect detailed information about your products or services: For GOODS (HSN classification): Product name, technical specifications, raw material composition, manufacturing process, intended use/purpose, catalogue/brochure with product photos, existing invoices (if available), industry classification (if known). For SERVICES (SAC classification): Detailed description of service provided, nature of service (professional, technical, construction, transport, etc.), deliverables/output, service agreement or contract (if applicable), industry/sector (healthcare, IT, consulting, etc.). The more detailed the description, the more ACCURATE the classification. We review technical specifications, product catalogs, and understand the core nature of your business offering.
HSN/SAC Code Research & Analysis
2-4 daysOur CA/tax experts conduct comprehensive research using: (1) Official GST HSN/SAC directory (published by CBIC - Central Board of Indirect Taxes and Customs), (2) Customs Tariff Act, 1975 (for detailed HSN descriptions), (3) GST rate schedules (Notifications under CGST Act specifying rates for each HSN/SAC), (4) Industry-specific classification guides and circulars, (5) Advance Ruling Authority (AAR) orders on similar products/services, (6) Comparable case laws and tribunal judgments. We analyze MULTIPLE possible HSN/SAC codes for your product/service, compare descriptions, eliminate unsuitable codes, and shortlist the MOST APPROPRIATE code. For borderline cases (where product falls under 2+ HSN codes), we prepare comparative analysis with pros/cons of each code.
GST Rate Determination & Validation
1 dayAfter identifying the correct HSN/SAC code, we determine the applicable GST rate: Cross-check HSN/SAC with latest GST rate schedule (rates change via notifications — we track all amendments). Verify CGST, SGST/UTGST, IGST rates (for inter-state supplies). Check for any EXEMPTIONS or NIL rates for specific HSN/SAC codes. Identify any RATE CHANGE history (if rate was different earlier, to check past invoices). Validate CESS applicability (e.g., luxury goods, sin goods, coal, etc. attract GST cess over and above standard GST rate). Example: HSN 8703 (Motor cars) — GST rate = 28% + Cess (1%-22% based on engine capacity and length). We provide you with: HSN/SAC code (4-digit, 6-digit, and 8-digit if applicable), Exact GST rate (CGST + SGST or IGST), Effective date of rate applicability, Notification reference for rate determination.
Invoice Format Review & Correction
1-2 daysWe review your existing invoices to check compliance: Verify if correct HSN/SAC code is mentioned (4/6/8-digit as per requirement). Check if GST rate shown on invoice matches the HSN/SAC code. Ensure invoice format is as per Rule 46 of CGST Rules (tax invoice requirements). Verify HSN/SAC-wise summary (if required for high-turnover businesses). Identify any MISMATCHES: Wrong HSN/SAC code, Wrong GST rate (doesn't match HSN/SAC), Missing HSN/SAC (mandatory for >₹5 cr turnover), Incorrect invoice format (missing mandatory fields). We provide: Invoice format CORRECTION recommendations, Sample compliant invoice template with correct HSN/SAC and GST rate, Guidance on billing software settings to auto-populate HSN/SAC, Checklist for invoice audit before dispatch to customers.
Classification Report & Certificate
1-2 daysWe prepare a detailed HSN/SAC Classification Report containing: Product/Service description and specifications, Recommended HSN/SAC code (4-digit, 6-digit, 8-digit), Applicable GST rate (CGST, SGST, IGSC, Cess if any), Rationale for classification (why this HSN/SAC is correct — supported by official description, notification reference, case laws), Alternative HSN/SAC codes considered (if any) and reasons for rejection, Invoice format recommendations, Effective date and validity of classification. We issue a CLASSIFICATION CERTIFICATE signed by our CA/tax expert — this can be used: As supporting document in case of department query/dispute, For internal audit and compliance records, For presenting to customers/vendors who ask for classification proof, For advance ruling application (if you want AAR confirmation). Certificate validity: Till any change in product specifications, GST law, or rate notification.
Multi-Product Classification (for Product Range)
3-5 days (for 20-50 products)If you deal in MULTIPLE products/services, we prepare a comprehensive HSN/SAC MASTER LIST: Product-wise or service-wise listing, HSN/SAC code for each item (with 4/6/8-digit codes), Applicable GST rate for each item, Invoice description (standard description to be used on invoices for uniformity). Format: Excel sheet with columns — Product Name, HSN Code, GST Rate, Description, Remarks. This MASTER LIST helps in: Billing software configuration (import HSN/SAC codes directly), Invoice generation (auto-populate HSN and rate based on product selection), GST return filing (HSN-wise summary in GSTR-1), Audit and compliance (consistent classification across all invoices). We update the master list periodically (if you add new products or GST rates change).
Training & Implementation Support
1 dayWe provide training to your accounts/billing team on: How to identify and use correct HSN/SAC codes, How to mention HSN/SAC on invoices (digit requirement based on turnover), How to update billing software with HSN/SAC codes, How to handle classification queries from customers/department, How to maintain HSN/SAC master list and update it when products change. We assist in: Billing software configuration (Tally, Zoho Books, QuickBooks, etc.) — setting up HSN/SAC codes, rates, and invoice templates. Sample invoice generation with correct HSN/SAC and GST rate for testing. Checklist creation for invoice accuracy verification before dispatch. This ensures your team can independently handle HSN/SAC compliance post-implementation.
Classification Dispute Advisory & Representation
Varies (dispute-dependent)If you receive a GST notice or SCN (Show Cause Notice) challenging your HSN/SAC classification, we provide: Dispute analysis: Review department's objection and proposed alternate HSN/SAC code. Legal research: Find case laws, AAR orders, and circulars supporting your classification. Representation: Draft reply to SCN, argue your case before GST officer/Adjudicating Authority. Advance Ruling application: If classification is genuinely ambiguous, we file application before GST Advance Ruling Authority (AAR) for authoritative classification. Appeal support: If adverse order is passed, we assist in filing appeal before Appellate Authority. We represent clients in classification disputes involving: Product composition ambiguity (e.g., is it 'plastic' or 'composite material'?), Service categorization disputes (e.g., is it 'consulting' or 'manpower supply'?), Rate ambiguity (two HSN codes with different rates applicable — which to choose?), Export classification (customs rejecting HSN code on shipping bill).
✅Total Timeline
3-5 days for single product/service classification (description to certificate delivery). 7-10 days for multi-product classification (20-50 items). Expedited 24-48 hour service available for urgent requirements (additional charges apply). Classification certificate valid till product specifications or GST law changes.
Documents Required for HSN/SAC Classification
For Goods (HSN Classification)
- ✓Product description (detailed name, specifications, technical details)
- ✓Product catalogue or brochure (with photos, dimensions, features)
- ✓Composition/ingredients list (for chemical, food, textile products)
- ✓Manufacturing process description (how the product is made)
- ✓Intended use/application (what the product is used for)
- ✓Existing invoices (if you've been issuing invoices with some HSN code)
- ✓Purchase invoices from suppliers (showing HSN code they used)
- ✓Product testing/certification documents (BIS, FSSAI, ISO, etc. if applicable)
- ✓Industry classification details (if known)
For Services (SAC Classification)
- ✓Service description (detailed explanation of service provided)
- ✓Nature of service (professional, technical, construction, transport, hospitality, etc.)
- ✓Service deliverables (what customer receives after service completion)
- ✓Service agreement or contract sample (terms of service)
- ✓Industry/sector details (IT, healthcare, education, real estate, etc.)
- ✓Existing service invoices (if you've been issuing invoices)
- ✓Service process flow (how the service is delivered — stages/steps)
- ✓Licensing/certification details (professional license, trade license, service tax registration if any)
- ✓Customer type (B2B or B2C — helps in understanding service nature)
📌 Additional Documents (if applicable)
- →GSTIN and GST registration certificate
- →Import/export documents (if product is imported/exported)
- →Customs classification (if product has been imported — BOE copy)
- →Previous classification orders (if any from AAR or department)
- →Competitor invoices (showing HSN/SAC they are using for similar products/services)
- →Industry association classification guide (if available)
- →BIS/ISI certification (for manufactured goods)
- →FSSAI license (for food products)
- →Drug license (for pharmaceutical/medical products)
- →Technical drawing/blueprint (for machinery, equipment)
HSN/SAC Classification Examples
🔢HSN Code Examples (Goods)
Mobile Phones (Smartphones)
HSN: 8517 12 00
GST Rate: 18%
Telephones for cellular networks or for other wireless networks
Cotton T-Shirts
HSN: 6109 10 00
GST Rate: 5%
T-shirts, singlets and other vests, of cotton
Wheat Flour (Atta)
HSN: 1101 00 00
GST Rate: NIL (0%)
Wheat or meslin flour (exempt from GST)
LED Bulbs
HSN: 8539 50 00
GST Rate: 12%
Light-emitting diode (LED) lamps
Cement
HSN: 2523
GST Rate: 28%
Portland cement, aluminous cement, slag cement
Biscuits (Branded)
HSN: 1905 31
GST Rate: 18%
Sweet biscuits
📋SAC Code Examples (Services)
CA Services (Audit, Tax Filing)
SAC: 998311
GST Rate: 18%
Financial auditing and accounting services
Legal / Advocate Services
SAC: 998212
GST Rate: 18%
Legal advisory and representation services
Construction of Residential Building
SAC: 995411
GST Rate: 18%
Construction services of residential buildings (affordable housing may have lower rate)
Goods Transport by Road
SAC: 996511
GST Rate: 5%
Road transport services of goods (GTA)
Restaurant Service (AC)
SAC: 996331
GST Rate: 5%
Restaurant and food serving services (with AC, liquor license)
Software Development
SAC: 998314
GST Rate: 18%
Information technology (IT) design and development services
Common HSN/SAC Classification Mistakes
HSN/SAC classification errors can lead to wrong tax rates, compliance issues, and penalties. Here are critical mistakes to avoid:
Using Generic/Broad HSN Code Instead of Specific Code
⚠️ Problem
Using only 2-digit or 4-digit HSN when more specific 6-digit or 8-digit code is available. Example: Using HSN 84 (Machinery) instead of specific HSN 8443 (Printing machinery). This leads to RATE AMBIGUITY — different products under same broad chapter may have different GST rates. Department may challenge your rate and ask for more specific classification.
✅ Solution
Always use the MOST SPECIFIC HSN/SAC code available (6-digit or 8-digit for goods, 6-digit for services). Refer to official HSN directory and match product specifications with HSN description. Consult CA/expert for borderline cases where multiple specific codes seem applicable. More specific code = clearer rate determination = fewer disputes.
Assuming Same Product Always Has Same HSN Globally
⚠️ Problem
Thinking that if a product has HSN code X in another country (or on import), the same code applies in India. HSN codes can vary based on: Country-specific extensions (India uses 8-digit, some countries use 10-digit), Product specifications and local interpretations, GST rate structure (India has aligned HSN with GST rates, which may differ from customs classification). Example: Imported product shows HSN 1234 56 78 on Bill of Entry, but for GST in India, correct code may be 1234 56 79.
✅ Solution
Always verify HSN code from INDIAN GST HSN directory (published by CBIC). Don't copy HSN from: Import documents (customs HSN may differ from GST HSN), Supplier invoices from other countries, Foreign product labels. Cross-check with GST rate schedule to ensure HSN matches applicable tax rate in India. Consult CA for import/export HSN alignment.
Not Updating HSN When Product Specifications Change
⚠️ Problem
Continuing to use old HSN code even after product composition, manufacturing process, or specifications change. Example: You were selling 'plastic toys' (HSN 9503, 18% GST). You changed material to 'wood' — now it's 'wooden toys' (HSN 9503 still, but different sub-classification with possibly 12% GST). Using old HSN = wrong rate = penalty.
✅ Solution
Review HSN classification whenever: Product composition changes (material, ingredients), Manufacturing process changes, Product use/application changes, You add new product variants. Conduct periodic HSN audit (annually or when product range changes). Update billing software and invoice templates with new HSN codes. Maintain HSN change log with effective dates.
Mixing Up HSN and SAC (Using HSN for Services or Vice Versa)
⚠️ Problem
Using HSN code for services or SAC code for goods due to confusion. Example: Providing 'construction service' but using HSN code (for construction materials) instead of SAC 9954 (construction service). This creates invoice compliance issues — wrong classification system used. GSTR-1 filing errors — HSN-wise summary vs SAC-wise summary mismatch.
✅ Solution
Remember the distinction: HSN = GOODS (tangible products you sell/manufacture/trade). SAC = SERVICES (intangible activities you provide). If you supply BOTH goods and services (composite supply), classify based on PRINCIPAL SUPPLY: If supply is predominantly goods (e.g., restaurant food) → use HSN. If supply is predominantly service (e.g., construction with materials) → use SAC. Consult CA for composite/mixed supply classification.
Not Mentioning HSN/SAC When Mandatory (Turnover >₹5 Cr)
⚠️ Problem
Businesses with turnover >₹5 crore not mentioning 4-digit HSN/SAC on invoices (mandatory as per GST law). This is a COMPLIANCE VIOLATION under Rule 46 of CGST Rules. Consequences: Invoice is non-compliant (customer cannot claim ITC in some cases). Late fee for non-compliant invoicing. GSTR-1 filing issues (portal may reject invoices without HSN/SAC). Department may impose penalty for repeated violations.
✅ Solution
Check your aggregate turnover for previous FY: If >₹5 crore → HSN/SAC is MANDATORY (minimum 4-digit, recommend 6-digit). Update all invoice templates to include HSN/SAC field. Configure billing software to auto-populate HSN/SAC based on product/service selection. Train billing team on mandatory HSN/SAC disclosure. Even if turnover is below ₹5 crore, BEST PRACTICE is to always mention HSN/SAC (improves compliance, reduces queries).
Using Supplier's HSN Code Without Verification
⚠️ Problem
Blindly copying HSN code from purchase invoices (supplier invoices) without verifying if it's correct for YOUR sale. Supplier may have used wrong HSN (their mistake becomes yours if you copy it). Your sale may be under DIFFERENT HSN (e.g., you buy raw material HSN 1234, but sell finished product HSN 5678). Example: You buy 'cotton fabric' (HSN 5208, 5% GST) and make 'readymade shirts' (HSN 6205, 12% GST). If you use supplier's HSN 5208 for selling shirts → WRONG classification and WRONG rate.
✅ Solution
NEVER copy HSN from supplier invoices without independent verification. Classify based on: What YOU are selling (not what you purchased). Final product specifications (after your processing/manufacturing). Intended use in customer's hands. Conduct independent HSN research or consult CA for your product classification. Maintain separate HSN codes for purchases (input) and sales (output).
Taxvio's HSN/SAC Classification Services
From single product classification to comprehensive product range advisory — we ensure accurate HSN/SAC codes, correct GST rates, and compliant invoicing.
Single Product/Service Classification
Classification of ONE product or service with detailed HSN/SAC code determination, applicable GST rate, and classification rationale report. Ideal for: New product launch, Single service offering, Import/export classification verification.
₹999
Product Range Classification (Up to 10 Items)
Classification of up to 10 products/services with individual HSN/SAC codes, GST rates, and master list in Excel format. Includes: Product-wise HSN/SAC report, Invoice format recommendations, Billing software setup guidance.
₹4,999
Bulk Product Classification (11-50 Items)
Comprehensive classification for 11-50 products/services. Includes: Detailed HSN/SAC master list (Excel), Product-wise GST rate schedule, Invoice template with HSN/SAC, Billing software configuration support, 1-year rate update service.
₹9,999
Invoice Audit & HSN/SAC Verification
Review of your existing invoices to verify: Correct HSN/SAC code usage, Matching GST rates, Compliance with invoice format rules (Rule 46), HSN/SAC digit requirement (based on turnover). Includes: Invoice error report, Correction recommendations, Sample compliant invoice.
₹2,999
Classification Certificate & Documentation
Official HSN/SAC classification certificate signed by CA/tax expert for presenting to: Department (in case of query/dispute), Customers/vendors (who ask for classification proof), Auditors (internal/statutory audit), Banks (for trade finance documentation).
₹1,999
Classification Dispute Advisory
Expert support for HSN/SAC classification disputes with GST department. Includes: Dispute analysis and legal research, Reply to SCN (Show Cause Notice), Representation before Adjudicating Authority, Case law and AAR order compilation, Alternative classification recommendation.
₹7,999
Export HSN Classification (8-Digit)
Detailed 8-digit HSN classification for export goods (mandatory for customs clearance and shipping bill). Includes: 8-digit HSN determination, Customs tariff verification, Export GST rate (IGST/LUT applicable), Shipping bill format compliance, IEC-based classification advisory.
₹2,999
Advance Ruling Application (AAR) Filing
If classification is genuinely ambiguous and you want authoritative determination, we file application before GST Advance Ruling Authority (AAR). Includes: AAR application drafting (Form GST ARA-01), Supporting documents compilation, Legal research and case law citations, Hearing representation, AAR order compliance.
₹19,999
HSN/SAC Training for Billing Team
On-site or online training session (2-3 hours) for your accounts/billing team covering: HSN/SAC basics and importance, How to search and identify correct codes, Invoice format and compliance requirements, Billing software HSN/SAC setup, Common mistakes and how to avoid them.
₹4,999
📦 Classification Packages
Starter (1-5 Products)
₹2,999
- ✓Up to 5 product/service classification
- ✓HSN/SAC master list
- ✓GST rate schedule
- ✓Email support
Business (6-20 Products)
₹7,999
- ✓Up to 20 product/service classification
- ✓Invoice format review
- ✓Billing software setup guidance
- ✓Classification certificate
- ✓Phone support
Enterprise (21-50 Products)
₹14,999
- ✓Up to 50 product/service classification
- ✓Invoice audit & correction
- ✓Billing team training (online)
- ✓1-year rate update service
- ✓Priority WhatsApp support
Real Stories from Our Classification Clients
"We manufacture agricultural equipment and were confused about correct HSN codes — some products had 12% GST, some 18%. Taxvio classified all 25 products accurately, provided HSN master list, and helped us correct 6 months of wrong invoices. Saved us from penalty during GST audit!"
Rajesh Manufacturing
Muzaffarnagar
"We needed 8-digit HSN codes for export invoices (customs requirement). Taxvio provided detailed HSN classification for all our export products with customs tariff verification. Our shipping bills now clear customs without any classification queries. Professional service!"
Gupta Exports Pvt. Ltd.
Noida
"Our software services were classified under wrong SAC code by our previous CA, leading to rate disputes with clients. Taxvio reclassified all our services (web development, app development, IT consulting) with correct SAC codes and rates. Now our invoices are compliant and clients accept them without questions."
Sharma IT Services
Delhi NCR
HSN/SAC Classification Services Across India
Taxvio is based in Khatauli, Muzaffarnagar, UP and provides HSN/SAC classification advisory (product/service classification, GST rate determination, invoice compliance) for manufacturers, traders, and service providers across Noida, Delhi NCR, Meerut, Ghaziabad, Mumbai, and pan-India online.
Frequently Asked Questions — HSN/SAC Classification
Can I change the HSN/SAC code after issuing invoices?+
What if my product falls under two different HSN codes (borderline case)?+
Is HSN/SAC code different for domestic supply and export?+
How often do HSN/SAC codes and GST rates change?+
Can I use a general HSN code like '9999' for all products?+
What is the difference between 4-digit, 6-digit, and 8-digit HSN codes?+
Does Taxvio provide classification support for import/export businesses?+
Ensure Accurate Classification
Get Expert HSN/SAC Classification & Avoid Tax Errors
Don't risk penalties due to wrong HSN/SAC codes and incorrect GST rates. Taxvio provides accurate product/service classification, GST rate determination, invoice compliance audit, and classification certification. Serving manufacturers, traders, exporters, and service providers nationwide. Starting ₹999 for single product classification. Ensure your invoices are compliant and your tax rates are correct!