Tax & Financial Utilities · Precision Engine
GST Tax Calculator Online - No Signup
Calculate GST tax amounts instantly. Easily add GST to net prices or remove GST from gross totals with exact CGST (Central GST) and SGST (State GST) tax splits across 5%, 12%, 18%, and 28% tax slabs.
✓ Add or Remove GST
✓ Exact CGST & SGST Split
✓ All 5%, 12%, 18%, 28% Slabs
✓ 100% Free & Accurate
%
Pre-Tax Amount: %
GST Tax Share: %
GST Tax Summary Invoice
Live Computation
Net Price (Pre-Tax Amount):
Central GST (CGST - %):
State GST (SGST / UTGST - %):
Total GST Tax Amount:
Final Gross Total Amount:
Practical Applications
Worked GST Invoice Examples
Click any example to instantly load it into the calculator.
GST Tax Rates
Standard GST Tax Slabs Explanation
| GST Slab Rate | CGST + SGST Split | Applicable Goods & Services |
|---|---|---|
| 0% (Nil Rate) | 0% + 0% | Fresh vegetables, milk, eggs, grain, bread, salt, unbranded food items. |
| 5% Slab | 2.5% + 2.5% | Apparel under ₹1000, packaged food items, medicines, tea, coffee, transport services. |
| 12% Slab | 6.0% + 6.0% | Processed foods, computers, cell phones, business class air travel, printing items. |
| 18% Slab | 9.0% + 9.0% | IT services, restaurants, software, telecom services, electronics, hair oil, soap. |
| 28% Slab | 14.0% + 14.0% | Automobiles, luxury cars, air conditioners, refrigerator, cement, sin goods. |
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Frequently Asked Questions
GST Calculator FAQs
Formula: GST Amount = Net Amount × (GST Rate / 100). Total Gross Amount = Net Amount + GST Amount. For example, ₹10,000 + 18% GST = ₹10,000 + ₹1,800 = ₹11,800 Total.
Formula: Net Amount = Total Gross Amount / (1 + GST Rate / 100). GST Amount = Total Gross Amount − Net Amount. For example, ₹11,800 inclusive of 18% GST = ₹10,000 Net + ₹1,800 GST.
CGST is Central Goods & Services Tax (Central Government) and SGST is State Goods & Services Tax (State Government) for intra-state sales (split 50/50). IGST (Integrated GST) is levied on inter-state sales across state borders.
The standard GST rates in India are 5% (essential goods), 12% (processed goods & services), 18% (IT & consumer electronics), and 28% (luxury items & automobiles).
To find net price before 18% GST, divide total inclusive price by 1.18. Example: ₹11,800 / 1.18 = ₹10,000 Net Price (Pre-Tax Amount).
On business invoices, multiply item subtotal by tax rate to get GST amount, split into CGST & SGST for intra-state sales, then add to net subtotal for grand total.
GST exclusive means price does not include tax (tax is added extra). GST inclusive means the final displayed price already includes the tax amount.
Yes, it is 100% free with unlimited calculations, no hidden fees, and no sign-up or registration required.
Yes, our calculator supports INR (₹), USD ($), EUR (€), and GBP (£) with instant floating-point precision.
5% applies to essential goods, 12% to processed foods, 18% to IT & electronics, and 28% to automobiles & luxury items.