GST Calculator

Add or remove GST from any amount — supports 5%, 12%, 18%, and 28% rates.

GST calculations shown are approximate. For official tax filings, consult a chartered accountant or tax professional and verify with current GST rules.

GST Rate

Base Amount

GST Amount

CGST (½)

Total (incl. GST)

How It Works

Enter the base amount and select the GST rate (5%, 12%, 18%, or 28%). Toggle between "Add GST" and "Remove GST" mode to calculate either direction.

**GST Calculator — Add or Remove Goods and Services Tax Instantly**

Goods and Services Tax (GST) is India's unified indirect tax that replaced a complex web of central and state taxes in 2017. Whether you're a business owner raising invoices, an accountant reconciling accounts, or a consumer wanting to know the pre-tax price of a product, our GST Calculator handles both directions instantly.

**GST Slabs in India**

GST is levied at four main rates:

- **5%** — Essential goods, economy class air travel, transport services
- **12%** — Processed food, computers, business class air travel
- **18%** — Most services, electronics, FMCG products, restaurants (non-AC)
- **28%** — Luxury goods, SUVs, tobacco, aerated drinks, casinos

**0% GST (Exempt):** Fresh food, educational services, healthcare, exports.

**How to Add GST to a Price**

If you know the base price (exclusive of GST) and want the final price:

GST Amount = Base Price × (GST Rate / 100)
Final Price = Base Price + GST Amount

Example: Base price ₹1,000, GST 18%
GST = 1,000 × 0.18 = ₹180
Final price = ₹1,180

**How to Remove GST from a Price**

If you have the GST-inclusive price and want the base price:

Base Price = GST-Inclusive Price / (1 + GST Rate / 100)
GST Amount = GST-Inclusive Price – Base Price

Example: GST-inclusive price ₹1,180, GST 18%
Base price = 1,180 / 1.18 = ₹1,000
GST amount = ₹180

**CGST and SGST Split**

For intra-state transactions, GST is split equally:
- CGST = GST Rate / 2
- SGST = GST Rate / 2

For inter-state transactions, the full rate applies as IGST.

**Who Needs a GST Calculator?**

*Business owners* for raising correct GST invoices.
*Accountants* for GST reconciliation and returns.
*Consumers* to verify GST amounts on bills.
*Exporters* for calculating input tax credits.

Frequently Asked Questions

India has four main GST slabs: 5% (essentials), 12% (processed food, computers), 18% (most services and goods), and 28% (luxury items). Some items are exempt (0% GST).

CGST (Central GST) and SGST (State GST) apply to intra-state sales, each at half the GST rate. IGST (Integrated GST) applies to inter-state sales at the full rate.

Divide the GST-inclusive price by (1 + GST rate/100). Example: ₹1,180 ÷ 1.18 = ₹1,000 (base price at 18% GST).

Yes, for businesses with turnover above ₹5 crore. The HSN (Harmonized System of Nomenclature) code identifies the tax category of each product or service.

Input Tax Credit (ITC) allows businesses to claim credit for GST paid on purchases against GST collected on sales, reducing the net GST liability.