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GST Calculator

Calculate GST amounts with accurate total and split values for simple business planning.

GST amount

₹180.00

Total value

₹1180.00

CGST

₹90.00

SGST

₹90.00

Online Goods and Services Tax (GST) Calculator

Goods and Services Tax (GST) is a unified, destination-based indirect tax levied on the manufacture, sale, and consumption of goods and services across India. Whether you are a small business owner issuing tax invoices, an accountant preparing monthly GST returns (GSTR-1 and GSTR-3B), or a consumer verifying purchase bills, the **ToolKraft GST Calculator** delivers instant tax splits between Central GST (CGST), State GST (SGST), and Integrated GST (IGST).

Our tool supports both **GST Inclusive** (reverse calculation from gross price to net value) and **GST Exclusive** (adding tax on base price) methods according to standard Central Board of Indirect Taxes and Customs (CBIC) rules.

GST Calculation Formulas Explained

1. GST Exclusive (Add GST)

Applied when tax needs to be added onto the base manufacturing or retail price:

GST Amount = (Base Price × GST Rate) ÷ 100
Gross Total = Base Price + GST Amount

2. GST Inclusive (Remove GST)

Applied when calculating the exact base cost and embedded tax from a maximum retail price (MRP):

GST Amount = Gross Price - [Gross Price ÷ (1 + GST Rate ÷ 100)]
Net Base Price = Gross Price - GST Amount

Standard GST Slabs in India

Tax SlabIntra-State Split (Inside State)Inter-State (Outside State)Typical Goods & Services Covered
0% (Nil)CGST: 0% | SGST: 0%IGST: 0%Fresh vegetables, unprocessed milk, eggs, grain essentials
5%CGST: 2.5% | SGST: 2.5%IGST: 5%Packaged food, apparel under ₹1000, life-saving medicines, transport
12%CGST: 6% | SGST: 6%IGST: 12%Processed foods, computers, business class air travel, medical items
18%CGST: 9% | SGST: 9%IGST: 18%IT software services, telecommunications, financial services, consumer tech
28%CGST: 14% | SGST: 14%IGST: 28%Automobiles, luxury items, gaming, aerated drinks, cement

How to Use the Online GST Calculator

1

Enter Amount

Type the initial price value (either net cost before tax or total inclusive invoice amount).

2

Select GST Rate

Choose the applicable GST slab (5%, 12%, 18%, 28%) or input a customized rate percentage.

3

Instant Breakdown

Review the exact net price, gross total, and bifurcated CGST + SGST or full IGST components.

Understanding CGST, SGST, and IGST

  • •CGST (Central GST) & SGST (State GST): Levied on intra-state transactions (when seller and buyer reside within the same state). The tax amount is shared equally between the Central and State governments (e.g., an 18% slab splits into 9% CGST and 9% SGST).
  • •IGST (Integrated GST): Levied on inter-state transactions (trade between two different states or imports into India). The full tax percentage is collected directly by the Central Government and redistributed accordingly.

Zero-Server Computation & Financial Privacy

All invoice amounts, percentages, and reverse deductions calculate directly inside your local web browser engine. ToolKraft does not transmit, store, or log your turnover figures, billing records, or tax calculations to any third-party servers.

Frequently Asked Questions (FAQs)

How do I calculate base price from a GST-inclusive invoice amount?

Select the "GST Inclusive" option and input your total bill value along with the applicable tax rate. The calculator uses reverse formulas to extract the net pre-tax price and isolated GST amount automatically.

Is GST applicable on all goods and services in India?

Most goods and services are covered under standard GST slabs. However, petroleum crude, motor spirit (petrol), high-speed diesel, aviation turbine fuel, natural gas, and alcohol for human consumption remain outside the GST framework and are subject to state excise and VAT.

Can I export GST computation tables into a PDF or spreadsheet?

Yes. If you maintain multiple billing entries in spreadsheet format, you can convert them directly using our Excel to PDF utility for client presentations or audit records.

Need to export financial or tax sheets into printable formats?

Excel to PDF Converter