CalcBit.
TaxUpdated 2026-06-14

GST Calculator

Calculate GST amounts for both inclusive and exclusive scenarios. Free GST calculator with CGST, SGST, and IGST breakdown.

Total Amount

₹11,800

GST Calculator

Quick GST inclusive and exclusive calculations

₹
%

Total Gross Amount

₹11,800

BASE + GST

Total GST Component

₹1,800

CGST (9.0%)

₹900

SGST (9.0%)

₹900

Quick Definition

For intra-state transactions in India, the GST is equally divided between the Central Government (CGST) and the State Government (SGST).

GST Guidelines in India

1

What is GST?

GST is an indirect tax that replaced many other taxes like VAT, Service Tax, and Excise Duty. It is a single, destination-based tax system across India.

2

Inclusive vs Exclusive

Exclusive: GST is added to the base price.
Inclusive: GST is already part of the total price (Reverse GST).

3

GST Rate Slabs

India primarily uses 4 slabs: 5% (Essential), 12% (Standard), 18% (Most common), and 28% (Luxury items).

OverviewHow It WorksFormulaExamplesBenefitsFAQRelated

What is GST Calculator?

A GST calculator helps you compute the Goods and Services Tax amount for any product or service. It works for both GST-inclusive (amount already includes GST) and GST-exclusive (GST to be added) scenarios.

How It Works

For exclusive calculation: GST is added to the base price. For inclusive calculation: GST is extracted from the total price. The calculator also shows the CGST and SGST split for intra-state transactions.

Formula & Calculation Method

Exclusive: GST = Amount × Rate/100. Inclusive: GST = Amount - (Amount × 100/(100+Rate))

CGST = SGST = GST/2 for intra-state. IGST = GST (full) for inter-state.

Examples

GST Exclusive (18%)

1Base amount: ₹10,000

2GST (18%): ₹1,800

3Total amount: ₹11,800

4CGST: ₹900, SGST: ₹900

Total Amount: ₹11,800

GST Inclusive (18%)

1Total amount: ₹11,800

2GST included: ₹1,800

3Base amount: ₹10,000

4CGST: ₹900, SGST: ₹900

Base Amount: ₹10,000

Benefits

  • 1
    Quick tax calculation
  • 2
    Understand tax component in prices
  • 3
    Business billing accuracy
  • 4
    GST return preparation
  • 5
    Price comparison across states

Common Use Cases

Business invoicingProduct pricing decisionsGST return preparationVendor invoice verificationE-commerce price calculation

Expert Tips

  • 1
    Verify the correct HSN code for your product
  • 2
    Maintain proper invoices for ITC claims
  • 3
    File GST returns on time to avoid penalties
  • 4
    Reconcile GSTR-2A/2B with purchase register
  • 5
    Keep track of reverse charge due dates

Common Mistakes to Avoid

  • !
    Confusing inclusive and exclusive
  • !
    Using wrong GST rate for items
  • !
    Not splitting CGST/SGST correctly
  • !
    Ignoring reverse charge applicability
  • !
    Forgetting HSN/SAC code requirements

Frequently Asked Questions

Find answers to common questions about this calculator below.

For GST exclusive: GST amount = (Original amount × GST rate) / 100. For GST inclusive: GST amount = Original amount - (Original amount × 100/(100+GST rate)).

India has four main GST slabs: 5% (essential items), 12% (standard services), 18% (most goods and services), and 28% (luxury and sin goods). Some items are exempt (0%) or have special rates (0.25%, 3%).

CGST (Central GST) and SGST (State GST) are applied to intra-state transactions, split equally. IGST (Integrated GST) applies to inter-state transactions. For example, on an 18% intra-state sale, CGST = 9% and SGST = 9%.

Under reverse charge mechanism, the recipient of goods/services is liable to pay GST instead of the supplier. This applies to specified categories like unregistered supplier purchases and certain notified services.

MRP typically includes GST. To calculate: GST amount = MRP - (MRP × 100/(100+GST rate)). For a ₹1,000 item at 18% GST: GST = 1000 - (1000 × 100/118) = ₹152.54.

Restaurant bills (non-AC) attract 12% GST. AC restaurants and those with liquor license attract 18% GST. 5-star hotels have 18% GST on food bills.

Yes, gold attracts 3% GST. Making charges on gold jewellery attract 5% GST. Gold coins and bars sold by banks also attract 3% GST.

Under construction properties: 5% GST without ITC on affordable housing, 1% GST without ITC on affordable housing under CLSS. Completed properties (ready to move) are exempt from GST.

Yes, registered businesses can claim input tax credit on GST paid on purchases used for business purposes. ITC cannot be claimed on personal use items, motor vehicles (except for specified businesses), and certain other goods.

Late filing fee is ₹50 per day (₹25 CGST + ₹25 SGST) for GSTR-3B. Maximum late fee is ₹10,000 (₹5,000 CGST + ₹5,000 SGST). Late payment interest is 18% per annum.

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