Tools Financial Calculators GST Calculator
Financial Calculator

GST Calculator

Calculate GST amount, pre-GST price, or post-GST price for any product or service in seconds.

GST tips for businesses

  • For intra-state transactions, GST is split equally as CGST and SGST. For inter-state transactions, a single IGST at the same combined rate applies.
  • If you're a GST-registered business, you can claim Input Tax Credit (ITC) on GST paid on purchases — this reduces your net GST liability.
  • GST returns must be filed monthly (GSTR-1 and GSTR-3B) or quarterly if opted for QRMP scheme for businesses below ₹5 Cr turnover.
  • Composition scheme dealers (turnover up to ₹1.5 Cr) pay a flat rate and cannot collect GST from customers or claim ITC.

Understanding GST in India

Goods and Services Tax (GST) is India's unified indirect tax system, introduced in 2017. It replaced multiple taxes (VAT, service tax, excise duty) with a single framework. GST is applied at four main rates — 5%, 12%, 18%, and 28% — with essential goods often exempted or taxed at 0%. The exact rate for any product or service is defined by HSN (Harmonised System of Nomenclature) or SAC (Services Accounting Code).

For most business-to-business (B2B) transactions, GST paid on inputs can be offset against GST collected on outputs through the Input Tax Credit (ITC) mechanism, ensuring the tax burden ultimately falls only on the end consumer. This calculator handles both exclusive GST (adding tax to a base price) and inclusive/reverse GST (extracting the tax from a GST-inclusive price).

Frequently asked questions

What is the difference between CGST, SGST, and IGST?
CGST (Central GST) and SGST (State GST) are each half of the applicable GST rate, charged on intra-state (within one state) transactions — the revenue is split between the central and state government. IGST (Integrated GST) is the full combined rate applied on inter-state transactions, collected by the centre and shared with the destination state.
Who needs to register for GST?
Businesses with annual turnover exceeding ₹40 lakh (₹20 lakh for special category states) for goods, and ₹20 lakh (₹10 lakh for special category states) for services, must register under GST. Registration is also mandatory for inter-state suppliers, e-commerce operators, and those making supplies on behalf of registered persons, regardless of turnover.
What items are exempt from GST?
Many essential items are GST-exempt or taxed at 0%, including fresh fruits and vegetables, milk, eggs, bread, contraceptives, newspapers, and certain educational services. Healthcare and most financial services are also exempt. Always check the official GST rate schedule or consult a CA for your specific product or service category.

Handle your business finances smarter

From GST calculations to content marketing and lead generation, Claipot gives small businesses and freelancers the tools to grow without the overhead.

Try Claipot free