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GST Calculator - Calculate GST Online India

Calculate GST amounts for any rate (5%, 12%, 18%, 28%). Get instant calculations for GST-inclusive and GST-exclusive amounts with CGST and SGST breakdown.

Calculate GST Amount
₹
GST Calculation Results

Base Amount

₹10,000.00

GST Amount (18%)

₹1,800.00

Total Amount

₹11,800.00

GST Breakdown

CGST (9%)₹900.00
SGST (9%)₹900.00
Total GST₹1,800.00

Summary

For a base amount of ₹10,000.00, adding 18% GST gives a total of ₹11,800.00 (including GST of ₹1,800.00).

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Understanding GST Calculation

GST (Goods and Services Tax) calculation is essential for businesses and consumers in India. Our GST calculator helps you quickly determine the tax amount and final price for any transaction.

GST Calculation Formulas

Add GST to base price:

GST Amount = Base Price × (GST Rate / 100)
Total = Base Price + GST Amount

Remove GST from total:

Base Price = Total / (1 + GST Rate / 100)
GST Amount = Total - Base Price

Common GST Rates by Category

5% GST

Sugar, tea, coffee, coal, medicines, economy transport

12% GST

Computers, processed food, mobile phones, umbrella

18% GST

Capital goods, industrial products, most services

28% GST

Luxury items, automobiles, cement, tobacco, AC

Tips for GST Compliance

  • Maintain proper invoices with correct GST breakup
  • File GST returns on time to avoid penalties
  • Claim input tax credit to reduce tax burden
  • Use HSN codes for goods and SAC codes for services
  • Keep records for at least 6 years

Frequently Asked Questions

What is GST?
GST (Goods and Services Tax) is a comprehensive indirect tax levied on the supply of goods and services in India. It replaced multiple taxes like VAT, service tax, and excise duty. GST is divided into CGST (Central GST), SGST (State GST), and IGST (Integrated GST for inter-state transactions).
What are the GST slabs in India?
India has four main GST slabs: 5% (essential items), 12% (standard goods), 18% (most services and goods), and 28% (luxury items and sin goods). Some items like unbranded food grains, fresh vegetables, and healthcare services are exempt from GST (0%).
How to calculate GST from total amount?
To extract GST from a GST-inclusive amount: GST Amount = Total Amount × (GST Rate / (100 + GST Rate)). For example, for ₹1,180 with 18% GST: GST = 1180 × (18/118) = ₹180, and original amount = ₹1,000.
What is the difference between CGST, SGST, and IGST?
CGST (Central GST) goes to the Central Government and SGST (State GST) goes to the State Government for intra-state transactions. Each is half of the total GST. IGST (Integrated GST) is the full GST rate charged on inter-state transactions and goes to the Central Government.
Who needs to register for GST?
GST registration is mandatory if annual turnover exceeds ₹40 lakhs (₹20 lakhs for special category states) for goods, and ₹20 lakhs (₹10 lakhs for special states) for services. E-commerce sellers and certain specific categories must register regardless of turnover.
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