GST Calculator
Instantly calculate GST for invoices and billing. Switch between inclusive and exclusive GST, choose slab rates, and get automatic CGST/SGST/IGST breakup for quick compliance checks.
GST Calculator
Add GST to base amount or extract GST from inclusive amount
Calculation Type
₹
GST Slab
Tax Structure
Net Payable Amount
₹1,180.00
GST Amount: ₹180.00
Taxable Value
₹1,000.00
Total GST
₹180.00
CGST
₹90.00
SGST/IGST
₹90.00
Summary
- Rate applied: 18%
- Mode: GST added on base value
- Split: CGST 9% + SGST 9%
GST Usage Notes
- Use inclusive mode when product price already contains GST.
- Use exclusive mode for base-price quotations before tax.
- Select inter-state for IGST and intra-state for CGST+SGST split.
- Always validate final tax treatment with HSN/SAC and latest notifications.
Frequently Asked Questions
How do I calculate GST on a taxable amount?
For GST exclusive mode, GST amount = Taxable value × GST rate ÷ 100. Total bill = Taxable value + GST. Example: ₹1,000 at 18% GST gives ₹180 tax and ₹1,180 total.
How do I extract GST from an amount inclusive of tax?
For inclusive mode, Taxable value = Total amount × 100 ÷ (100 + GST rate). GST amount is Total amount − Taxable value. Example: ₹1,180 at 18% gives ₹1,000 taxable and ₹180 GST.
What is the difference between CGST, SGST and IGST?
For intra-state supplies, GST is split equally into CGST and SGST. For inter-state supplies, full tax is charged as IGST. Example: 18% GST means 9% CGST + 9% SGST for intra-state, or 18% IGST for inter-state.
What GST slabs are supported?
This calculator supports common slabs of 0%, 3%, 5%, 12%, 18%, and 28%, which cover most goods and services categories in India.
Can I use this calculator for invoices?
Yes, you can use it for quick checks while preparing invoices, quotations, and purchase orders. Always verify final tax treatment as per current GST rules and HSN/SAC classification.