GST Calculator

GST calculator free – Enter your amount, select GST mode (Exclusive or Inclusive), choose GST rate (5%, 18%, or 40%), and the tool instantly calculates GST amount, CGST, SGST, and total price. No software needed .

The two modes are:

• GST Exclusive: Amount entered is before adding GST. GST is calculated on top of the entered amount.
• GST Inclusive: Amount entered already includes GST. The tool calculates the pre-tax amount and GST components separately.

Use Exclusive mode for invoices and Inclusive mode for retail prices .

Absolutely! GST tax calculator free – 100% free forever. No hidden fees, no premium plans, no credit card required. Free GST tool with unlimited usage. No watermarks, no ads, no sign-up needed .

In India's GST system:

• CGST (Central GST): Collected by the central government. Half of the total GST amount.
• SGST (State GST): Collected by the state government. Half of the total GST amount.
• IGST (Integrated GST): For inter-state transactions (not shown in our calculator).

Our calculator shows CGST and SGST as 50-50 split of total GST .

Common GST rates in India:

• 5%: Essential items (food, medicines, etc.)
• 12%: Standard goods (processed food, etc.)
• 18%: Most goods and services (default rate)
• 28%: Luxury and sin goods (ex. automobiles, tobacco)
• 0%: Exempt items (fresh produce, education, healthcare)

Our calculator supports 5%, 18%, and 40% (simplified luxury rate) .

To calculate GST from a tax-inclusive total:

• Formula: GST Amount = Total Amount - (Total Amount × 100 / (100 + GST Rate))
• Example: ₹1,180 total at 18% GST → ₹1,180 × 100 / 118 = ₹1,000 (base price)
• GST amount: ₹1,180 - ₹1,000 = ₹180

Use our Inclusive mode to get this breakdown instantly .

100% secure! All calculations happen directly in your browser. GST calculator online free without uploading to any server. Your data never leaves your device. No storage, no access, complete privacy .

• ✅ Free GST calculator – No cost, unlimited use
• ✅ Exclusive & Inclusive modes – Flexible calculation options
• ✅ CGST & SGST breakdown – Complete tax visibility
• ✅ Multiple GST rates – 5%, 18%, 40%
• ✅ Real-time calculation – Instant updates as you type
• ✅ Simple 3-field input – Easy to use
• ✅ Secure & private – 100% browser-based processing
• ✅ No sign-up required – Start calculating instantly