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✓ Updated March 2026 · FY 2025-26

GST
Calculator India

Add or remove GST from any price. Calculate CGST + SGST split. Works for all GST slabs — 5%, 12%, 18%, 28%.

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🏷️ GST Calculation
Custom:
%
🏷️ Common GST Rates:
0% — Basic food, healthcare, education
5% — Packaged food, apparel <₹1000, transport
12% — Business class air, phones, processed food
18% — Most services, electronics, software
28% — Luxury cars, tobacco, aerated drinks
Total Price (GST Included)
₹11,800
₹10,000 + ₹1,800 GST @ 18%
Base Amount
₹10,000
Before GST
GST Amount
₹1,800
@ 18%
CGST (9%)
₹900
Central GST
SGST (9%)
₹900
State GST
📊 Tax Breakdown
📋 GST Filing Deadlines

GSTR-3B: Monthly/Quarterly filing of outward supplies
GSTR-1: Monthly/Quarterly invoice filing
Annual Return GSTR-9: Due by 31 December
Registration required if turnover > ₹20L/year (₹10L for NE states)

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GST Calculator India — Calculate GST Amount, GST Inclusive & Exclusive Price 2025

GST (Goods and Services Tax) replaced 17 indirect taxes in India from July 1, 2017. The four main GST slabs are 5%, 12%, 18%, and 28%. This calculator instantly computes GST amount, base price, and total price for both exclusive (add GST to price) and inclusive (extract GST from total) scenarios.

28%
Highest GST slab — luxury items, tobacco, automobiles
18%
Most services, electronics, restaurants — most common slab
5%
Essential goods, economy class air travel, small restaurants
0%
Zero-rated: fresh food, educational services, health services

📐 Formula & How It Works

GST Exclusive (add tax): Total = Base Price × (1 + GST Rate/100)
GST Inclusive (extract tax): Base Price = Total / (1 + GST Rate/100)
GST Amount = Total − Base Price

For IGST (inter-state): single rate applied. For CGST+SGST (intra-state): split equally.

Example: Invoice ₹11,800 inclusive of 18% GST → Base price = 11,800 / 1.18 = ₹10,000. GST = ₹1,800 (CGST ₹900 + SGST ₹900).

🛠️ How to Use This Calculator

  1. Step 1: Enter the price amount — either base price (excluding GST) or total price (including GST).
  2. Step 2: Select the calculation mode: 'Add GST' to calculate total from base, or 'Extract GST' to find base from total.
  3. Step 3: Select the applicable GST rate — 5%, 12%, 18%, or 28%.
  4. Step 4: Choose transaction type: intra-state (CGST+SGST) or inter-state (IGST).
  5. Step 5: The calculator shows base price, GST split (CGST/SGST or IGST), and total amount.
💡 Pro Tips
✓ For B2B transactions, always check if the supplier is GST registered — input tax credit is only available from GST-registered vendors.
✓ Composite scheme: businesses with turnover up to ₹1.5 Cr can opt for composition scheme — pay 1–6% flat GST but can't claim ITC.
✓ GST on real estate: 5% for under-construction residential, 12% for commercial. Ready-to-move flats with OC are exempt.
✓ Restaurant GST: AC restaurants in malls: 5% (no ITC). Non-AC: 5%. Hotels with tariff above ₹7,500/night: 18%.
✓ E-commerce operators must collect TCS (Tax Collected at Source) at 1% on behalf of sellers — this affects small online sellers.

❓ Frequently Asked Questions

What are the GST slabs in India in 2025? +

0%: Fresh food, eggs, milk, books, educational services. 5%: Essential goods, economy air travel, economy restaurants. 12%: Processed food, business class air travel, mobile phones. 18%: Most services, restaurants in AC premises, electronics, most goods. 28%: Luxury and sin goods — luxury cars, tobacco, aerated drinks.

What is the difference between IGST, CGST, and SGST? +

CGST (Central GST) + SGST (State GST): Applies on intra-state transactions — split equally between Centre and State. IGST (Integrated GST): Applies on inter-state transactions and imports — collected by Centre, shared with destination state. Total rate is the same.

Can I claim GST refund on exports? +

Yes. Exports are zero-rated under GST. Exporters can claim full refund of ITC paid on inputs, capital goods, and input services used in export production. Apply through GSTR-1 and GSTR-3B filings.

What is Input Tax Credit (ITC) in GST? +

ITC allows businesses to offset GST paid on purchases (inputs) against GST collected on sales (output). Only GST-registered businesses can claim ITC. It eliminates the cascading tax effect that existed before GST.

Who needs to register for GST? +

Businesses with annual turnover above ₹40 lakh (goods) or ₹20 lakh (services) must register. For special category states (NE India, Uttarakhand), threshold is ₹10–20 lakh. E-commerce operators and businesses selling across state borders must register regardless of turnover.

What is the GST on personal finance services? +

Most financial services attract 18% GST: mutual fund management fees, insurance premiums (life insurance: 18% on term, 4.5% on first year traditional plans), stock brokerage, bank charges. Note: Life insurance GST on term plans was reduced to benefit policyholders.

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