GST Calculator
Calculate GST amount, CGST, SGST, and total price instantly — add or remove GST from any amount for all GST slabs.
Educational Purpose Disclaimer
This calculator is provided for informational and educational estimation purposes only. All calculations and projections are based on standard mathematical formulas and assumed inputs. The output values should not be considered professional financial, legal, tax, or medical advice. ProCalc is not a registered financial advisor or licensed practitioner. Always consult a qualified professional (such as a Chartered Accountant, certified planner, or physician) before making major decisions.
What is the GST Calculator?
This GST Calculator helps you add or remove GST from any product or service price. It is designed for Indian business owners, freelancers, and shoppers. You can instantly split tax amounts into CGST and SGST.
You can calculate tax in two ways:
1. Add GST: Find the final price including tax by entering your pre-tax base amount.
2. Remove GST: Extract the base price and tax amount from a GST-inclusive price.
GST Rates in India:
- 5%: Basic household items and packaged food.
- 12%: Processed foods and business computers.
- 18%: Most services and manufactured goods.
- 28%: Luxury items and luxury vehicles.
CGST and SGST Split:
For local trade, GST splits equally between the central government (CGST) and the state government (SGST). For example, an 18% GST tax includes 9% CGST and 9% SGST. Our calculator does this split for you automatically.
How Does the GST Calculator Work?
1. Enter the Amount: Type the price of the product or service. This can be either the base price (before GST) or the total price (including GST) depending on your calculation type.
2. Select GST Rate: Choose the applicable GST rate slab — 5%, 12%, 18%, 28%, or enter a custom rate for special categories.
3. Choose Calculation Type: Select "Add GST" if your amount is the pre-tax base price. Select "Remove GST" if your amount already includes GST and you want to find the original base price.
4. View Results: The calculator instantly shows the GST amount, the CGST and SGST split (for intra-state transactions), and the total amount.
Formula & Calculation Method
Adding GST (Exclusive): GST Amount = Base Price × (GST Rate / 100). Total Price = Base Price + GST Amount.
Removing GST (Inclusive): Base Price = Total Price × 100 / (100 + GST Rate). GST Amount = Total Price − Base Price.
CGST = SGST = GST Amount / 2 (for intra-state transactions).
Example: Base price ₹1,000 at 18% GST → GST = ₹180, Total = ₹1,180, CGST = ₹90, SGST = ₹90.
Reverse: Total ₹1,180 at 18% GST → Base = ₹1,180 × 100/118 = ₹1,000, GST = ₹180.
Example Calculation
Example 1 — Add GST: A freelancer charges ₹50,000 for a design project. At 18% GST → GST = ₹9,000, Total invoice = ₹59,000. CGST = ₹4,500, SGST = ₹4,500.
Example 2 — Remove GST: A retailer sees an MRP of ₹2,360 on a product with 18% GST. Base price = ₹2,360 × 100/118 = ₹2,000. GST = ₹360.
Example 3 — 5% GST: Restaurant bill of ₹1,000 at 5% GST → GST = ₹50, Total = ₹1,050. CGST = ₹25, SGST = ₹25.
Frequently Asked Questions
Adding GST (Exclusive): GST Amount = Base Price × (GST Rate / 100). Total Price = Base Price + GST Amount. Removing GST (Inclusive): Base Price = Total Price × 100 / (100 + GST Rate). GST Amount = Total Price − Base Price. CGST = SGST = GST Amount / 2 (for intra-state transactions). Example: Base price ₹1,000 at 18% GST → GST = ₹180, Total = ₹1,180, CGST = ₹90, SGST = ₹90. Reverse: Total ₹1,180 at 18% GST → Base = ₹1,180 × 100/118 = ₹1,000, GST = ₹180.
Disclaimer: This financial calculator is provided for educational and estimation purposes only. ProCalc is not a registered financial advisor or SEBI entity. Rates and tax rules may vary.