GST Calculator

GST Calculator Online — Free Goods & Services Tax Inclusive & Exclusive Tool

Calculate Goods and Services Tax (GST) amounts, net costs, gross values, and tax splits (CGST, SGST, IGST) directly in your browser. Powered by client-side math execution, this tool computes tax breakdowns instantly without sending financial figures to external servers.

Mathematical Formulas

1. Adding GST (Tax Exclusive):

$$\text{GST Amount} = \text{Net Price} \times \left(\frac{\text{GST Rate}}{100}\right)$$

$$\text{Gross Price} = \text{Net Price} + \text{GST Amount}$$

2. Removing GST (Tax Inclusive):

$$\text{GST Amount} = \text{Gross Price} - \left(\frac{\text{Gross Price}}{1 + \frac{\text{GST Rate}}{100}}\right)$$

$$\text{Net Price} = \text{Gross Price} - \text{GST Amount}$$

3. CGST & SGST Split (Intra-State Supply):

$$\text{CGST (Central GST)} = \frac{\text{GST Amount}}{2}$$

$$\text{SGST (State GST)} = \frac{\text{GST Amount}}{2}$$

How to Use GST Calculator Step-by-Step

1. 1Enter Amount: Input the net price or gross cost value in your local currency.
2. 2Select Tax Mode: Choose Add GST (Exclusive) or Remove GST (Inclusive).
3. 3Select GST Slab: Choose standard rate slabs (5%, 12%, 18%, 28%, or custom %).
4. 4Review Tax Breakdown: View CGST (50%), SGST (50%), or IGST (100%) splits.
5. 5Copy Tax Summary: Copy line-item values for invoicing and accounting software entries.

Practical Commercial Use Cases

• B2B Billing & Invoicing: Calculate exact tax lines for client billing invoices.
• Retail Price Calculation: Compute gross retail sticker prices from wholesale net costs.
• Tax Filing Preparation: Separate gross revenue into net sales and collected GST liabilities.

Frequently Asked Questions (FAQs)

What is the difference between GST Inclusive and GST Exclusive?

GST Exclusive means tax is added on top of the net base price. GST Inclusive means the displayed gross price already includes the embedded tax amount.

How are CGST and SGST split on invoices?

For sales within the same state (intra-state), GST is split equally 50/50 between Central GST (CGST) and State GST (SGST).

Related Tax Calculators

• VAT Calculator: Calculate Value Added Tax for European & International regimes.
• Sales Tax Calculator: Calculate US state sales tax rates.
• Discount Calculator: Compute sale savings before applying taxes.

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