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GST Calculator

Calculate GST, reverse GST, CGST, SGST and IGST quickly for Indian prices and invoices.

Indian Rupee • Instant calculation • No registration
MAIN GST CALCULATOR

Calculate GST quickly

Enter an amount, select a rate, and see the complete tax split.

GST RATE
GST CALCULATION

Taxable amount

₹10,000
GST @ 18%₹1,800
CGST @ 9%₹900
SGST @ 9%₹900
Final amount₹11,800
RESULT BREAKDOWN

Your GST result

Taxable amount₹10,000.00
Total GST₹1,800.00
Final amount₹11,800.00
CGST9%₹900.00
SGST9%₹900.00
ADVANCED OPTIONS

Quantity, discounts and rounding

RECENT CALCULATIONS

Saved in this browser

Click Save after a calculation to keep it here.

SHOW THE CALCULATION

How was this calculated?

₹10,000 × 18 / 100 = ₹1,800 GST
₹10,000 + ₹1,800 = ₹11,800 final amount

GST formulas

Adding GST: GST = Amount × Rate ÷ 100; Final Amount = Amount + GST.
Removing GST: Base Amount = Inclusive Amount × 100 ÷ (100 + Rate); GST = Inclusive Amount − Base Amount.

GST GUIDE

What is GST?

GST, or Goods and Services Tax, is an indirect tax applied to goods and services in India. This GST calculator helps estimate tax on an amount before GST or reverse-calculate the original amount from a GST-inclusive price.

How is GST divided?

For an intra-state transaction, GST is commonly shown as equal CGST and SGST portions. For an inter-state transaction, the tax is shown as IGST. Product classification and applicable rates can vary, so verify the rate for the specific good or service.

Common GST rates

0%Nil-rated goods5%Selected essentials12%Selected goods/services18%Many goods/services28%Selected goods/services

Quantity × price

Open Advanced Options to calculate multiple units, apply a percentage or fixed discount before GST, and round the invoice total.

GST Calculator FAQs

What is GST?

GST is an indirect tax on goods and services in India.

How do I calculate 18% GST?

Multiply the taxable amount by 18 and divide by 100. For ₹10,000, GST is ₹1,800.

How do I remove GST from an amount?

Use Inclusive Amount × 100 ÷ (100 + GST rate) to find the original taxable amount.

What is the difference between CGST, SGST and IGST?

CGST and SGST are the two parts of an intra-state GST charge. IGST is used for inter-state transactions.

How is GST divided between CGST and SGST?

For an intra-state transaction, the total GST is normally split equally between CGST and SGST.

How do I calculate GST-inclusive price?

For an intra-state transaction, the total GST is normally split equally between CGST and SGST.

HOW IT WORKS

Calculate GST on an amount.

Enter a value and GST rate to calculate tax-inclusive or tax-exclusive amounts.

  1. 1. Enter the amount

    Type the price you want to calculate GST for.

  2. 2. Choose the GST rate

    Select a rate and indicate whether GST is included.

  3. 3. Review the totals

    See the tax amount and the resulting total or base price.