GST on Business Services: Rates, SAC Codes & Compliance Guide for Indian Companies

GST on business services is the tax levied on services supplied by businesses in India, with the applicable rate determined by the SAC assigned to each service. This SAC classification directly controls how much Goods and Services Tax (GST) is charged and how the transaction is reported in GST returns. 

Accurate use of SAC codes is essential for correct invoicing, seamless input tax credit claims and full compliance, helping businesses avoid errors, mismatches and penalties. 

What is the structure of SAC codes?

SAC is a 6-digit classification system used under GST to identify and categorise services for standardised reporting across industries. The first two digits are always “99”, which denote services under GST. The next two digits represent the major category of the service, while the last two digits specify the exact service within that category.

This structured classification ensures services are logically grouped and taxed consistently based on their nature, improving invoicing accuracy and GST compliance.

Why are SAC codes important for businesses?

SAC codes are not just identifiers; they play a direct role in GST compliance and reporting for businesses.

They determine the applicable GST rate for each service. They also ensure accurate reporting in GST returns, especially GSTR-1. In addition, they help prevent classification errors that could lead to notices, mismatches or input tax credit (ITC) issues.

Read SAC Codes in GST: Meaning, Full List, Structure & Usage Guide to understand them better.

What are the GST rates applicable to business services?

GST on services is broadly classified under standard slabs based on the type and classification of the service.

Common GST rate slabs for services

The majority of business services lie in a handful of standard GST slabs.

• Nil/Exempt: Specific essential services (e.g., healthcare, education).
• 5%: Basic services and essential supplies.
• 18%: The standard rate for most professional, financial, IT and business services.
• 40%: Luxury, high-end entertainment and sin services (such as betting or gaming).

Here's everything you must know about GST Rates for Services.

How the GST rate is determined

The GST rate is determined by the service's classification under the SAC.

• Each SAC code is mapped to a GST rate under the GST rate schedule.
• Similar services may fall under different GST slabs based on their classification.

The final tax treatment depends on the nature of the service and its usage.

What are the common business services and their GST rates?

The table below outlines commonly used SAC codes for business services along with indicative GST rates based on the standard classification: 

How to find the correct SAC code for a service?

It is critical to determine the correct SAC code to apply the appropriate GST rate and to ensure compliance.

Businesses can use official sources to identify the correct classification, such as the Central Board of Indirect Taxes and Customs (CBIC) GST portal, official rate notifications and GST classification lists.

GST classification lists

In practice, SAC codes can be determined systematically.

• Begin with the service description stated on the invoice.
• Match it with the nearest category in the SAC classification list.
• Verify the applicable GST rate in the official GST rate schedule.

This approach minimises the risk of misclassification and errors in GST reporting.

What are the GST compliance requirements for business services?

GST compliance for business services requires proper classification, accurate reporting and complete documentation.

Invoicing requirements

Service invoices must include all necessary GST details, such as:

• A clear mention of the SAC code
• Application of the correct GST rate
• Accurate GSTIN details of both the supplier and the recipient

Errors in invoicing can lead to mismatches in returns and ITC issues.

Return filing

GST returns must accurately reflect service transactions.

• Outward supplies are reported in GSTR-1
• Tax liability is declared in GSTR-3B
• Consistency between returns is required to avoid scrutiny

Input tax credit (ITC) conditions

ITC on services can be claimed only if certain conditions are met:

• There must be a valid tax invoice
• The supplier must have filed GST returns
• The service must be used for business purposes

This ensures proper compliance and reduces the risk of disputes or reversals.

Learn how to make your business GST compliant here.

Final Thoughts

GST on business services depends on correct SAC classification and accurate application of tax rates. Since different services fall under different GST slabs, identifying the right SAC code is essential for proper invoicing, correct return filing and seamless compliance.

For growing businesses, managing classification, invoicing and GST reporting manually can quickly become complex and error-prone. A structured system like TallyPrime helps standardise SAC usage, apply the correct GST rates consistently and maintain accuracy across reporting. This not only improves compliance but also reduces the risk of costly errors and return mismatches.