What is the difference between GST inclusive and GST exclusive?

GST exclusive means the tax is added on top of the base price. GST inclusive means the final price already includes the tax component.

What are CGST, SGST, and IGST?

For intrastate transactions within the same state, GST is split equally into Central GST (CGST) and State GST (SGST). For interstate transactions across state lines, Integrated GST (IGST) is applied.

How do I extract GST from a gross amount?

Divide the total gross amount by `(1 + GST Rate / 100)` to get the pre-tax base price, then subtract the base price from the total to get the GST amount.

What are standard GST tax slabs?

Standard GST slabs typically include 0% (essential foods), 5% (transport, basic items), 12% (processed foods), 18% (most services, tech), and 28% (luxury items, automobiles).

Can businesses claim Input Tax Credit (ITC) on GST paid?

Yes. Registered businesses can claim Input Tax Credit on GST paid for business purchases to offset against GST collected on sales.

How do I calculate pre-tax base price from a GST-inclusive total?

To extract base price from a GST-inclusive amount, divide the total price by `1 + (GST Rate / 100)`. The difference equals the exact GST tax component.

Math & Statistics Cluster

GST Calculator (Goods and Services Tax Inclusive & Exclusive)

Calculate GST inclusive prices, extract pre-GST amounts, and split CGST/SGST/IGST tax slabs.

TL;DR: GST Calculator computes Goods and Services Tax (GST) for standard tax slabs (5%, 12%, 18%, 28%), calculating both tax-inclusive and tax-exclusive pricing.

Amount

GST %

Type

How Do You Calculate GST Inclusive and GST Exclusive Amounts?

To add GST (Exclusive): GST Amount = Price × (GST Rate / 100); Total = Price + GST Amount. To remove GST (Inclusive): GST Amount = Total - [Total / (1 + GST Rate / 100)]; Base Price = Total / (1 + GST Rate / 100).

How to Use the GST Calculator

Our GST Calculator performs high-precision mathematical operations directly in your browser with zero latency and complete client-side privacy.

Enter the Base Amount or Gross Transaction Value.
Select your GST Rate slab (0%, 5%, 12%, 18%, or 28%) or enter a custom rate.
Choose 'GST Exclusive' to add tax OR 'GST Inclusive' to extract pre-tax amount.
View the calculated GST Amount, CGST/SGST 50/50 split, and total invoice value.
Copy or export the tax breakdown for invoicing and accounting records.

Mathematical Formula & Equations

Adds or removes Goods and Services Tax (GST) across standard tax brackets (5%, 12%, 18%, 28%).

\[ \text{GST Amount} = \text{Base Price} \times \frac{\text{GST Rate}}{100}, \quad \text{Base Price (from Gross)} = \frac{\text{Gross Price}}{1 + \frac{\text{GST Rate}}{100}} \]

Calculation Example

For a ₹5,000 service at 18% GST: GST Amount = ₹900, Total Gross Invoice = ₹5,900.

100% Client-Side Privacy & Data Security

All calculations, amortization schedules, variables, and sensitive numerical datasets execute 100% locally in your web browser memory. Your financial, medical, and personal values are never transmitted, logged, or uploaded to any external server.

Frequently Asked Questions

: GST exclusive means the tax is added on top of the base price. GST inclusive means the final price already includes the tax component.
: For intrastate transactions within the same state, GST is split equally into Central GST (CGST) and State GST (SGST). For interstate transactions across state lines, Integrated GST (IGST) is applied.
: Divide the total gross amount by `(1 + GST Rate / 100)` to get the pre-tax base price, then subtract the base price from the total to get the GST amount.
: Standard GST slabs typically include 0% (essential foods), 5% (transport, basic items), 12% (processed foods), 18% (most services, tech), and 28% (luxury items, automobiles).
: Yes. Registered businesses can claim Input Tax Credit on GST paid for business purchases to offset against GST collected on sales.
: To extract base price from a GST-inclusive amount, divide the total price by `1 + (GST Rate / 100)`. The difference equals the exact GST tax component.

Cite This Calculator

Need to reference this online calculator in a financial proposal, academic paper, blog post, or classroom curriculum? Copy a citation below.

NexLove.org. (2026). GST Calculator [Online Calculation Tool]. https://nexlove.org/tools/gst-calculator

“GST Calculator.” NexLove.org, 2026, nexlove.org/tools/gst-calculator.

NexLove.org (2026) GST Calculator. Available at: https://nexlove.org/tools/gst-calculator (Accessed: 2026).

@misc{nexlove_gst_calculator,
  title = {GST Calculator},
  author = {{NexLove.org}},
  year = {2026},
  url = {https://nexlove.org/tools/gst-calculator}
}

Embed This Tool

Add the live GST Calculator to your own website with this snippet — it loads the real, working calculator in an iframe.

<iframe src="https://nexlove.org/embed/gst-calculator.html" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:12px" title="GST Calculator — NexLove.org" loading="lazy"></iframe>

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