GST CalculatorNavigation
Calculate GST in Seconds
Fast, Accurate & 100% Free
Simplify GST calculations with instant GST-inclusive, GST-exclusive, CGST, SGST, and IGST results. Current slabs: 0%, 5%, 18%, 40%.
1. Calculation Type
2. Supply Type
3. Enter Amount (₹)
Enter amount excluding GST
4. Select GST Rate
Current GST rate slabs as per CBIC (effective 22 Sep 2025)
GST Calculation Results
Live breakdown · updates as you type
Tax Breakdown
Total Amount (Inclusive of GST)
₹11,800.00
Rupees Eleven Thousand Eight Hundred Only
Gross price: ₹11,800.00 · Taxable: ₹10,000.00
Result calculated as per current GST rules effective from 22nd September 2025 (GST 2.0 rate structure).
Need an Invoice?
Generate professional invoices in seconds.
Try Invoice Generator →Find GST Rate?
Search HSN code and find correct GST rate.
Coming SoonExplore More Tools
E-way Bill, Profit Margin, Discount Calculator & more.
Coming SoonWhat is a GST Calculator?
A GST Calculator helps businesses and individuals calculate GST amounts instantly for GST-inclusive and GST-exclusive prices. It simplifies CGST, SGST, and IGST calculations for invoices, purchases, and tax compliance, with zero signup and results under 10 seconds.
How GST Calculator Works
3 simple steps to get accurate GST results
Enter Details
Choose calculation type, supply type, enter amount and select GST rate.
Calculate
Click calculate and get an instant breakdown of GST components and totals.
Get Results
Use results for billing, accounting, or business planning with complete confidence.
Popular GST Calculation Examples
GST Calculation Formula
GST Exclusive (Add GST)
- GST Amount = (Taxable Value × GST Rate) ÷ 100
- Final Amount = Taxable Value + GST Amount
Example: ₹1,000 @ 18% → GST ₹180 → Total ₹1,180
GST Inclusive (Remove GST)
- Taxable Value = Inclusive Price ÷ (1 + GST Rate ÷ 100)
- GST Amount = Inclusive Price − Taxable Value
Example: ₹1,180 @ 18% → Taxable ₹1,000 → GST ₹180
What Are GST Rates & Why They Matter?
From 22nd September 2025, GST has been simplified into two main slabs — 5% and 18% — with 0% for essentials and 40% for luxury and sin goods.
0%
Essentials
Fundamental essentials such as select fresh food items.
5%
Merit / Everyday
Packaged food, soaps, medicines, toothpaste, milk products.
18%
Standard Rate
Standard goods and services — appliances, TVs, cement, small cars.
40%
Luxury & Sin Goods
Tobacco, cigarettes, high-end cars — special rate from Sep 2025.
Understanding CGST, SGST, and IGST
GST in India is split across four components depending on whether a transaction is within a state, across states, or within a Union Territory.
CGST
Central GST
Levied by the central government on intra-state supplies of goods and services.
SGST
State GST
Imposed by state governments on intra-state transactions; revenue stays with the state.
UTGST
Union Territory GST
Applies within Union Territories and functions similarly to SGST.
IGST
Integrated GST
Levied on inter-state transactions; collected by the centre and shared with states.
| Tax Type | Applies On | Collected By |
|---|---|---|
| CGST | Intra-state | Central Government |
| SGST | Intra-state | State Government |
| UTGST | Within UT | UT Government |
| IGST | Inter-state | Central Government |
Why Use T7ERP GST Calculator?
100% Accurate
Based on latest CBIC rate slabs and rules
Super Fast
Get results in under 10 seconds
Mobile Friendly
Works perfectly on all devices
Always Updated
GST rates aligned with GST 2.0 (Sep 2025)
Privacy First
No data stored. Completely safe
100% Free
No hidden charges. Ever.
GST Across the Supply Chain
GST is applied at every stage, with input tax credit ensuring tax is ultimately borne by the end consumer without cascading.
| Particulars | Cost | Tax @18% | Tax Liability | Invoice Total |
|---|---|---|---|---|
| Manufacturer | ₹2,000 | ₹360 | ₹360 | ₹2,360 |
| Logistics (+₹500) | ₹2,500 | ₹450 | ₹90 | ₹2,950 |
| Retailer (+₹400) | ₹2,900 | ₹522 | ₹72 | ₹3,422 |
Final price to consumer: ₹3,422 (18% GST example)
Learn more
Related GST & Billing Guides
Practical articles on GST billing, e-Invoice, e-Way Bill, and compliance for Indian businesses.
The Ultimate GST Billing Checklist for Indian Retailers in 2026
A practical 2026 GST billing checklist for Indian retailers covering invoice accuracy, HSN codes, GSTR-2B reconciliation, ITC tracking, return deadlines, and future-ready billing systems.
Read guide
e-Invoice and e-Way Bill in India: Everything You Need to Know
A complete 2026 guide to e-Invoice and e-Way Bill in India covering thresholds, IRN generation, e-Way Bill validity, penalties, exemptions, and how both systems connect under GST.
Read guide
POS Billing Speed: Why 3 Seconds Per Invoice Matters More Than You Think
Discover why POS billing speed affects sales, customer experience, and store efficiency. Learn the technology behind ultra-fast GST billing.
Read guideReady for complete business operations?
Ready to automate your GST billing, inventory, POS, and return filing? Move to T7ERP. T7ERP connects invoices, quotations, purchase orders, delivery challans, inventory, and accounting — built for Indian SMBs.
- No credit card to explore
- GST-ready workflows
- Made for India
Inventory & Stock
GST Billing & Reports
Multi-Branch POS
Purchase to Payment
Frequently Asked Questions
Everything you need to know about GST calculation, CGST/SGST/IGST splits, inclusive vs exclusive pricing, rate slabs, and privacy on T7 ERP.
Need to Generate a GST Invoice Too?
Use our free Invoice Generator to turn this calculation into a professional, GST-compliant invoice in seconds.