GST Calculator India
Calculate GST online for inclusive and exclusive prices. Add GST, remove GST from MRP, split CGST/SGST or IGST, and round off invoice totals.
Also try: HSN Search • GST Calendar • Compliance Guides
Popular rates: 5%, 12%, 18% and 28% GST
Print works best on Desktop • Use “Save as PDF” in Print Dialog
GST Compliance Workflows
Practical guides and tools to review invoices, returns, ITC, e-invoice applicability, and goods movement before using official GST portals.
Create & Review Invoice
Prepare GSTR-3B
Review ITC & Reconcile
Check E-Invoice & EWB
New GST Compliance Guides
Safety Note: These guides are educational workflows. Verify final filings, ITC claims, IRN/e-invoice, and e-way bill details on official GST portals or with a professional.
Find GST Rate by HSN/SAC Code
Search HSN/SAC before choosing 5%, 12%, 18% or 28% GST rate.
Common HSN Searches
View all →Rates can vary by description/conditions. Confirm on GST Portal for edge cases.
Common SAC Searches
View all →Services often have conditions (RCM/abatement). Verify before invoicing.
Create a GST estimate or quotation after calculation
Use this when you want a client-ready estimate with an accurate GST breakup. (Not a final tax invoice.)
- 1.Enter the amount and choose Inclusive or Exclusive.
- 2.Select the GST rate (5%, 12%, 18%, 28%) based on HSN/SAC.
- 3.Enable Inter-state (IGST) if buyer is in another state.
- 4.Add client name and optional note in “Add Invoice Details”.
- 5.Print / Save as PDF using your browser print dialog.
GST Calculation Examples (Real Templates)
Add 18% GST to your fee, remove GST from MRP (Reverse GST), or split taxes for inter-state IGST invoices.
- GST = ₹9,000
- CGST = ₹4,500 • SGST = ₹4,500
- Total = ₹59,000
- Using 18% without confirming SAC/HSN
- Forgetting IGST for inter-state clients
- Base = ₹11,800 / 1.18 = ₹10,000
- GST = ₹1,800
- True taxable value = ₹10,000
- Treating MRP as profit (ignoring GST inside)
- Wrong rate due to wrong HSN
- IGST = ₹12,000
- CGST/SGST split = Not applicable
- Total = ₹1,12,000
- Charging CGST/SGST on inter-state invoices
- Missing “Place of Supply” in final invoices
Who Should Use This GST Calculator?
Freelancers & Consultants
- Calculate 18% GST on Services
- Remove GST from client payments
- Check TDS deductions (194J)
Retailers & Traders
- Product-wise GST calculation
- Invoice-ready tax breakdown
- Inclusive vs Exclusive pricing
Manufacturers
- Input vs Output Tax clarity
- Multi-rate calculation
- Inverted Duty Refund checks
Accountants & CAs
- Quick cross-verification tool
- Client-ready accurate numbers
- Zero data storage risk
How to Calculate GST in India (Formulas)
Add GST, remove GST, and split CGST/SGST or IGST using these standard formulas.
How to Calculate GST in India (Formulas)
Add GST, remove GST, and split CGST/SGST or IGST using these standard formulas.
ExclusiveWhen tax is added OVER price
Use this when you quote a fee and need to add tax on top.
- Base: ₹50,000
- Rate: 18%
- Tax: ₹9,000
- Total: ₹59,000
InclusiveWhen tax is INSIDE the price
Use this for MRP items or checking vendor bills. Never treat MRP as profit.
- MRP: ₹11,800
- Rate: 18%
- Base: ₹10,000
- GST inside: ₹1,800
CGST, SGST & IGST Split
Note: CGST + SGST applies for intra-state sales. IGST applies for inter-state sales.
Reverse GST Calculator: remove GST from MRP
Use Inclusive mode when your price already includes GST, such as an MRP label or an all-inclusive quote. This helps you find the true taxable value (base price) before tax was added.
GST Round Off Calculator Note
Under Section 170 of the CGST Act, the total amount of tax, interest, penalty, or fee payable is rounded off to the nearest rupee. Fractional parts of 50 paise or more are rounded upward to one rupee, and parts less than 50 paise are ignored. Our calculator applies these standard rounding rules to your totals.
Common GST Questions
Answers to the most frequent doubts about GST calculation.
Can I create a quotation / proforma invoice with this?
Yes. You can generate a client-ready Estimate/Quotation summary, add a client name/note, and print it (or save as PDF from your browser). For a final GST tax invoice with full legal fields (GSTIN series, place of supply, etc.), use your accounting software.
Is GST calculated on the selling price or invoice value?
GST is calculated on the transaction value (taxable value) mentioned in the invoice. If GST is shown separately, it is added to the base price (Exclusive). If the price is “All Inclusive”, the tax must be back-calculated (Reverse GST).
What’s the difference between inclusive GST and exclusive GST?
Exclusive GST means tax is calculated on top of the goods/service value (e.g., ₹100 + ₹18 Tax = ₹118). Inclusive GST means the tax is already inside the final price (e.g., MRP ₹118 includes ₹18 Tax).
Does this calculator split GST into CGST and SGST automatically?
Yes. For Intra-State transactions, it splits tax into 50% CGST + 50% SGST. For Inter-State transactions (IGST), simply toggle the 'Inter-state' option to see the full integrated tax amount.
Which GST rate should I apply — 5%, 12%, 18% or 28%?
Never guess the rate. The rate depends entirely on the HSN (Goods) or SAC (Services) code. Use our HSN Search feature to find the closest rate reference, then verify before filing.
Is GST applicable to freelancers and consultants?
Yes, once your annual turnover exceeds ₹20 Lakh (₹10 Lakh in special category states). Most freelance services (Design, Dev, Marketing) fall under 18% GST (SAC 9983).
GST State Codes Finder
Expand to search state codes for GSTIN and compliance checks.
GST State Codes Finder
Expand to search state codes for GSTIN and compliance checks.
GST State Code List
Find the First 2 Digits of any GSTIN. Used for validation.
Why professionals use this calculator
This tool is built to assist compliance, not replace professional advice.
TheGSTCalculator.in is built to simplify GST calculations for Indian businesses, freelancers, and professionals — fast, accurate, and compliance-aware.
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Hand-picked utilities that pair well with GST calculations and invoicing.
Sources & Methodology
How we calculate GST and how to verify rates & rules.
Show
Sources & Methodology
How we calculate GST and how to verify rates & rules.
• GST breakdown follows standard India GST structure: intra-state = CGST+SGST, inter-state = IGST.
• Rates depend on the correct HSN (goods) / SAC (services). Verify via GST Portal/CBIC references below.
• This tool runs in your browser. No payment/GST details are stored on our servers.