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GST Calculator
Simple. Instant. Accurate.

Calculate CGST, SGST & IGST for any amount across all GST slabs. No signup required. Results update as you type.

Real-time All GST slabs Visual breakdown Free forever
 INR

?What is GST?

GST (Goods and Services Tax) is India's comprehensive indirect tax, introduced on July 1, 2017. It unified a fragmented system of VAT, Service Tax, Excise Duty, and Central Sales Tax into a single, streamlined tax applied at every stage of the supply chain.

Operating on a destination-based principle, GST revenue flows to the state where goods or services are consumed — not where they originate. This transformed India into a genuine common market for the first time.

ΣHow GST is calculated

Adding GST (exclusive price)

GST Amount = Original Price × GST Rate ÷ 100
Total Price = Original Price + GST Amount

Example: ₹10,000 product at 18% GST → GST = ₹1,800 → Total = ₹11,800.

Removing GST (inclusive price)

Original Price = Inclusive × 100 ÷ (100 + Rate)
GST Amount = Inclusive Price − Original Price

Example: ₹11,800 inclusive of 18% → Original = ₹10,000 → GST = ₹1,800.

≡CGST, SGST, and IGST

  • CGST (Central GST): Central Government's share on intra-state sales — always half the total rate.
  • SGST (State GST): State Government's share — equals CGST, completing the other half.
  • IGST (Integrated GST): Full rate charged on inter-state sales, later apportioned between states.

%GST rate slabs 2026

RateCategoryExamples
0%ExemptFresh produce, milk, eggs, bread, healthcare, education
5%EssentialPackaged food, sugar, tea, coal, economy air travel
12%StandardButter, ghee, mobile phones, business class flights
18%Standard+Consumer goods, IT services, telecom, AC restaurants
28%LuxuryCars, ACs, tobacco, aerated drinks, cement

!Who must register?

Mandatory for businesses exceeding ₹40 lakh turnover (goods) or ₹20 lakh (services). Special category states have lower thresholds: ₹20 lakh and ₹10 lakh respectively. Inter-state suppliers and e-commerce operators must register regardless of turnover.

✓Tips to save on GST

  • Claim ITC aggressively: Offset GST paid on purchases against GST collected. This is the single biggest tax saver for businesses.
  • Composition Scheme: Under ₹1.5 crore turnover? Pay flat 1% (manufacturing) or 5% (restaurants) instead of regular rates.
  • Invoice discipline: Every purchase invoice must have GSTIN, HSN codes, and tax breakup — or you lose ITC claims.
  • File on time: Late fees are ₹50/day + 18% annual interest on outstanding tax. Set calendar reminders.

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Frequently asked questions

What is GST?
GST (Goods and Services Tax) is India's unified indirect tax on goods and services, replacing VAT, Service Tax, and Excise Duty since July 1, 2017.
What are the current GST rates?
Four main slabs: 5% (essential), 12% (standard), 18% (services), 28% (luxury). Special rates exist for diamonds (0.25%), gold (1.5-3%). Items like fresh food, healthcare, and education are exempt.
CGST vs SGST vs IGST — what's the difference?
Intra-state sales split GST into CGST (central) + SGST (state) at half each. Inter-state sales charge IGST at the full rate, later shared between governments.
How do I calculate GST?
Add GST: Amount × (1 + Rate/100). Remove GST: Inclusive Price × 100 ÷ (100 + Rate). Or just use our calculator above for instant results.
Who must register for GST?
Businesses over ₹40L turnover (goods) or ₹20L (services). Lower for special category states. E-commerce operators and inter-state suppliers must register regardless.
What items are GST-exempt?
Fresh fruits, vegetables, milk, eggs, bread, salt, honey, healthcare, education, agriculture services, books, and newspapers are all 0% GST.