--- title: "GST Calculator - Calculate CGST, SGST & IGST Online | BUSY" description: "Use BUSY’s free GST Calculator to calculate GST-inclusive and GST-exclusive amounts, CGST, SGST and IGST instantly online." canonical: "https://busy.in/calculators/gst-calculator/" --- # Free Online GST Calculator for Accurate GST Amount Calculation ## GST Calculator Calculate your Goods and Services Tax with ease. Amount ₹ Please enter a valid amount GST Type Exclusive Inclusive GST Rate (%) 5% 18% 40% Supply Type Intra-state Inter-state Calculate GST Quick Summary Total Items: 1 (Single Amount Entry) Applied GST Rate: 5% Supply Type: Intra-state Financial Breakdown Taxable Value ₹ 0.00 CGST ₹ 0.00 SGST ₹ 0.00 IGST ₹ 0.00 Total Amount ₹ 0.00 Need to calculate GST on a product, service, invoice, purchase bill, or sale value? BUSY's free GST calculator helps you quickly calculate the GST amount, base value, CGST, SGST, IGST and total invoice value in a simple format. The calculator is useful for business owners, accountants, [**GST-registered dealers**](https://busy.in/gst/how-to-register-for-gst-in-india-a-step-by-step-guide/), freelancers, consultants, retailers and finance teams who want quick GST calculations online without using manual formulas. You can use this tool for both GST-exclusive and GST-inclusive calculations. Enter the amount, select the GST rate, choose the supply type, and get the correct GST breakup instantly. Free Demo Available ## India's No.1 GST Billing & Accounting Software - Auto GST & ITC Calculations - 1-Click Filing & Reconciliation - Complete Inventory Management - End-to-End Accounting Solution - Auto E-Way Bill & E-Invoice Trusted by 6,00,000+ Businesses 4.6 Google Rating ## What is GST? GST, or Goods and Services Tax, is an indirect tax charged on the supply of goods and services in India. It [**replaced multiple indirect taxes**](https://busy.in/gst/what-are-the-taxes-subsumed-under-gst/) and brought most goods and services under one tax system. GST is usually added to the taxable value of goods or services. In some cases, the invoice amount may already include GST. A GST calculator helps you calculate the tax amount correctly in both situations. This tool is useful for: - Business owners - Accountants and tax professionals - GST-registered dealers - Retailers and wholesalers - Freelancers and consultants - Finance and billing teams ### Enter the Following Details - Taxable value or GST-inclusive amount - GST calculation type (Inclusive or Exclusive) - Applicable GST rate - Supply type (Intra-State or Inter-State) ### Basic GST Formula GST Amount = Taxable Value × GST Rate ÷ 100 Total Invoice Value = Taxable Value + GST Amount ## What This Free GST Calculator Helps You Calculate Calculation Type What It Means Useful For GST-Exclusive Calculation GST is added over the base value Sales bills, quotations and tax invoices GST-Inclusive Calculation GST is extracted from a final amount that already includes tax Price checks, vendor bills and inclusive quotes Intra-State GST Breakup GST is split into CGST and SGST or UTGST [**Supplies within the same state or applicable Union Territory**](https://busy.in/gst/everything-about-gst-state-code/) Inter-State GST Breakup Full GST is shown as IGST Supplies between different states or Union Territories ## How to Use This Free Online GST Calculator BUSY's GST Calculator is simple to use whether you are calculating GST on sales, purchases, [**invoices**](https://busy.in/gst/a-guide-to-invoicing-under-gst/), quotations or service bills. 1 ### Enter the Amount Enter the taxable or GST-inclusive amount to begin the calculation. 2 ### Select Calculation Type Select whether the amount is GST-inclusive or GST-exclusive. 3 ### Choose the GST Rate Choose the applicable GST rate for your goods or services. 4 ### Select the Supply Type Select intra-state or inter-state supply based on the transaction type. 5 ### View the Results View the taxable value, GST amount, breakup and invoice total. ## GST Calculation Example Here is a simple example using ₹10,000 as the taxable value and an 18% GST rate. Calculation Input Output GST-Exclusive Taxable Value: ₹10,000, GST Rate: 18% GST: ₹1,800, Total Value: ₹11,800 GST-Inclusive Inclusive Amount: ₹11,800, GST Rate: 18% Base Value: ₹10,000, GST: ₹1,800 Intra-State Breakup [**Supplier location and place of supply**](https://busy.in/gst/concept-of-place-of-supply-under-gst-explained-rules/) are in the same state CGST: ₹900, SGST: ₹900 Inter-State Breakup Supplier location and place of supply are in different states IGST: ₹1,800 ## CGST vs SGST vs IGST – What is the Difference? [**CGST, SGST, IGST and UTGST**](https://busy.in/gst/the-different-types-of-gst-in-india-cgst-sgst-igst-and-utgst/) are different GST components used based on the supplier location and place of supply. GST Type Applies When Example CGST Intra-state supply within a state Charged with SGST SGST Intra-state supply within a state Charged with CGST UTGST Intra-UT supply where UTGST is applicable Charged with CGST in applicable Union Territories IGST Inter-state supply Supplier location and place of supply are in different states or Union Territories In practice, if a business in Delhi supplies goods to a place of supply in Delhi, CGST and SGST apply. If a business in Delhi supplies goods to a place of supply in Maharashtra, IGST applies. ## Common GST Rates in India GST rates depend on the type of goods or services, HSN code, SAC code and the latest notifications. The table below gives a simple overview of commonly used GST rates. ### 0% Exempt or [**nil-rated supplies**](https://busy.in/gst/zero-rated-gst-items-2026/), including selected essential goods and notified services. ### 5% Merit-rate goods and services, including many daily-use essentials. ### 18% Standard-rate goods and services, including many business and technology services. ### 40% Special demerit rate for select luxury and notified goods. Some special categories may have separate notified rates such as 0.25%, 1.5% or 3%. Businesses should check the correct [**HSN**](https://busy.in/hsn/) or [**SAC code**](https://busy.in/sac-codes/) before applying GST on invoices. ## GST-Inclusive vs GST-Exclusive Price GST-inclusive and GST-exclusive prices are often confused, especially while [**preparing quotations and invoices**](https://busy.in/gst/proforma-invoice-under-gst-what-it-is-and-how-it-works/). Price Type Meaning Example GST-Exclusive Price GST is added over the base value ₹10,000 + 18% GST = ₹11,800 GST-Inclusive Price GST is already included in the final value ₹11,800 includes ₹1,800 GST Base Value Price before GST ₹10,000 Final Invoice Value Price after GST ₹11,800 If you are quoting prices to customers, mention clearly whether the price is inclusive or exclusive of GST. ## Benefits of Using a Free GST Calculator Online Manually calculating GST for different rates, supply types and invoice values can be time-consuming and prone to mistakes. BUSY's GST Calculator makes the process easier. ### Instant Calculation Calculate GST and invoice value instantly. ### Inclusive & Exclusive GST Calculate or extract GST in seconds. ### GST Breakup Get accurate GST component breakup. ### Invoice Ready Prepare invoices and quotations confidently. ### Vendor Bill Check Quickly validate GST on vendor invoices. ### Integrated Reporting Manage GST and reports in one place. ## Explore Relevant Guides Dive deeper into GST billing and compliance with these guides: [GST Invoice Format – Learn what details must be included in a GST invoice](https://busy.in/invoice-format/)[GST Rates – Understand how rates are linked with goods and services](https://busy.in/gst-rates/)[Input Tax Credit – Learn how eligible ITC helps reduce GST payable](https://busy.in/gst/input-tax-credit/)[E-Way Bill – Understand when an e-way bill is required](https://busy.in/gst/e-way-bill/)[E-Invoice – Learn how e-invoicing works for eligible businesses](https://busy.in/gst/e-invoice/) ## GST Rates for Products Find GST rates for popular products and categories [Washing Machine](https://busy.in/gst-rates/washing-machine/) [Paper](https://busy.in/gst-rates/paper/) [Readymade Clothes](https://busy.in/gst-rates/readymade-clothes/) [Alcohol](https://busy.in/gst-rates/alcohol/) [GST for Tours and Travels](https://busy.in/gst-rates/tours-travels/) [Toys GST Rate](https://busy.in/gst-rates/toys/) [Diamond](https://busy.in/gst-rates/diamond/) [GST Rate for Computer](https://busy.in/gst-rates/computer/) [GST for Mobile Phones](https://busy.in/gst-rates/mobile-phones/) [Taxi](https://busy.in/gst-rates/taxi/) [Paints](https://busy.in/gst-rates/paints/) [GST for Gym](https://busy.in/gst-rates/gym/) [GST for Rice](https://busy.in/gst-rates/rice/) [Cab Service](https://busy.in/gst-rates/cab-service/) [GST for Luxury Items](https://busy.in/gst-rates/luxury-items/) [Dairy Products](https://busy.in/gst-rates/dairy-products/) [Medical Insurance](https://busy.in/gst-rates/medical-insurance/) [Tobacco GST Rate](https://busy.in/gst-rates/tobacco/) [Agarbatti GST Rate](https://busy.in/gst-rates/agarbatti/) [Fruits](https://busy.in/gst-rates/fruits/) [View All GST Rates](https://busy.in/gst-rates/) ## Frequently asked questions ### What is a GST calculator? A GST calculator is an online tool that helps calculate GST amount, taxable value and final invoice value based on the selected GST rate. ### How does BUSY’s GST Calculator work? You enter the amount, select the GST rate and choose whether the amount is GST-inclusive or GST-exclusive. The calculator then shows the GST amount and final value. ### Can I calculate CGST and SGST with this calculator? Yes. For intra-state transactions, the calculator splits GST equally into CGST and SGST. ### Can I calculate IGST with this calculator? Yes. For inter-state transactions, the calculator shows the full GST amount as IGST. ### What is the formula to calculate GST? The basic formula is: GST Amount = Taxable Value × GST Rate ÷ 100. The final invoice value is taxable value plus GST amount. ### How do I remove GST from an inclusive amount? Use the GST-inclusive calculation. The formula is: Base Value = Inclusive Amount × 100 ÷ (100 + GST Rate). GST amount is the difference between inclusive amount and base value. ### What is the difference between GST-inclusive and GST-exclusive price? A GST-exclusive price does not include GST, so tax is added separately. A GST-inclusive price already includes GST in the final amount. ### Which GST rate should I use? The GST rate depends on the goods or services, HSN code, SAC code and latest GST notifications. Always verify the applicable rate before issuing invoices. ### Is GST charged on exports from India? Exports are generally treated as zero-rated supplies under GST, subject to applicable conditions and documentation. ### What is the GST rate on services vs goods? GST rates for both goods and services depend on their classification. Many standard services fall under 18%, but some goods and services may be exempt, taxed at 5%, or covered under special notified rates. ### Is BUSY’s GST Calculator free? Yes. BUSY’s GST Calculator is free to use and works on desktop and mobile browsers. ### How does this connect with BUSY accounting software? BUSY helps businesses create GST invoices, manage accounting, track inventory, calculate taxes, reconcile returns, generate e-way bills and manage e-invoices from one place.