Gst Rate Calculator India

GST Rate Calculator India

0.25% (Rough Diamonds) 3% (Gold/Silver) 5% (Essentials) 12% (Standard) 18% (Standard Services/Goods) 28% (Luxury/Sin Goods) Custom Rate
GST Exclusive (Add GST to Amount) GST Inclusive (Extract GST from Amount)

Calculation Results:

Net Amount (Pre-Tax): ₹0.00

Total GST Amount: ₹0.00

CGST: ₹0.00

SGST/UTGST: ₹0.00

Total Gross Amount (Post-Tax): ₹0.00

var rateSelect = document.getElementById('gstRateSelect'); var customRateField = document.getElementById('customRateField'); rateSelect.onchange = function() { if (this.value === 'custom') { customRateField.style.display = 'block'; } else { customRateField.style.display = 'none'; } }; function calculateIndianGST() { var amountInput = document.getElementById('gstInitialAmount').value; var rateSelectValue = document.getElementById('gstRateSelect').value; var customRateInput = document.getElementById('gstCustomRate').value; var taxType = document.getElementById('gstTaxType').value; var resultDiv = document.getElementById('gstResult'); var amount = parseFloat(amountInput); var rate = 0; if (rateSelectValue === 'custom') { rate = parseFloat(customRateInput); } else { rate = parseFloat(rateSelectValue); } if (isNaN(amount) || amount < 0 || isNaN(rate) || rate < 0) { alert("Please enter valid positive numbers for Amount and GST Rate."); resultDiv.style.display = 'none'; return; } var netAmount = 0; var gstAmount = 0; var grossAmount = 0; if (taxType === 'exclusive') { // Exclusive: Amount is net, need to add GST netAmount = amount; gstAmount = (amount * rate) / 100; grossAmount = netAmount + gstAmount; } else { // Inclusive: Amount is gross, need to reverse calculate GST grossAmount = amount; netAmount = amount / (1 + (rate / 100)); gstAmount = grossAmount – netAmount; } // Indian GST is split between Centre (CGST) and State (SGST) equally for intra-state var cgst = gstAmount / 2; var sgst = gstAmount / 2; // Formatting function for Indian Rupee currency function formatRupee(num) { return '₹' + num.toFixed(2).replace(/(\d)(?=(\d\d)+\d$)/g, "$1,"); } document.getElementById('resultNetAmount').innerHTML = formatRupee(netAmount); document.getElementById('resultGstAmount').innerHTML = formatRupee(gstAmount); document.getElementById('resultCGST').innerHTML = formatRupee(cgst); document.getElementById('resultSGST').innerHTML = formatRupee(sgst); document.getElementById('resultGrossAmount').innerHTML = formatRupee(grossAmount); resultDiv.style.display = 'block'; }

Understanding GST Calculation in India

The Goods and Services Tax (GST), launched on July 1, 2017, revolutionized India's indirect taxation system by replacing multiple cascading taxes levied by the central and state governments. For businesses, traders, and consumers alike, understanding how to calculate GST accurately is crucial for compliance and budgeting.

Whether you are raising an invoice for services rendered or trying to determine the pre-tax cost of a product you purchased, our Indian GST Calculator simplifies the math. It supports the standard GST slab rates in India: 0.25%, 3%, 5%, 12%, 18%, and 28%.

How to Use the GST Calculator

Calculating GST requires knowing three things: the transaction amount, the applicable GST rate, and whether the amount you have currently includes or excludes the tax.

  1. Enter Amount (₹): Input the monetary value of the goods or services.
  2. Select GST Rate (%): Choose the appropriate tax slab for your product/service from the dropdown menu. If your rate isn't listed, select "Custom Rate" and enter it manually.
  3. Select Tax Type: This is the most critical step.
    • Choose GST Exclusive if your entered amount is the base price and you need to add tax to it.
    • Choose GST Inclusive if your entered amount is the final price (MRP) and you need to extract the tax component from it.
  4. Click Calculate GST to see the Net Amount, Total GST, and Final Gross Amount. The calculator also breaks down the tax into CGST and SGST components.

GST Calculation Formulas

Understanding the underlying math helps when you need to do quick calculations manually.

1. Adding GST (GST Exclusive Calculation)

This is used when you know the base price (Net Amount) and want to calculate the final invoice amount.

  • GST Amount = (Net Amount x GST Rate) / 100
  • Gross Amount (Final Price) = Net Amount + GST Amount

Example: You sell a service for ₹10,000 at an 18% rate. GST is (10000 x 18)/100 = ₹1,800. The total invoice is ₹11,800.

2. Removing GST (GST Inclusive Calculation)

This is used when you know the final price (like MRP) and want to find out what the original base price was.

  • Net Amount (Base Price) = Gross Amount / (1 + (GST Rate / 100))
  • GST Amount = Gross Amount – Net Amount

Example: You buy a smartphone for a final price of ₹23,600, which includes 18% GST. The base price is 23600 / (1 + 0.18) = ₹20,000. The GST component was ₹3,600.

CGST, SGST, and IGST Explained

In India, GST is a destination-based tax with a dual structure:

  • CGST (Central GST) + SGST (State GST): Applicable when goods or services are supplied within the same state (Intra-state). The total GST rate is split equally between the Centre and the State. For an 18% item, 9% goes to CGST and 9% to SGST. Our calculator shows this split.
  • IGST (Integrated GST): Applicable when goods or services are supplied from one state to another (Inter-state). In this case, the entire tax rate (e.g., full 18%) is collected as IGST by the Central Government, which is later apportioned to the destination state.

Use this tool for accurate and instant GST calculations for your invoices, purchases, and financial planning in the Indian market.

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