How do I calculate Reverse GST in India?

To calculate Reverse GST, enter the total amount (GST inclusive) into our calculator and select the 'Reverse' mode. The tool will automatically deduct the GST portion to show you the original base price.

What are the current GST rates in India for 2026?

The standard GST slabs in India are 5%, 12%, 18%, and 28%. Our GST calculator supports all these rates and allows you to compare them side-by-side for better financial planning.

Is this GST calculator free to use without login?

Yes, ThinkForU's GST Calculator is 100% free and requires no login or registration. Your data is private and all calculations happen instantly on your device.

What is the difference between CGST, SGST, and IGST?

CGST and SGST are applicable on intra-state sales (within the same state), while IGST is applied on inter-state transactions. Our tool automatically splits the GST into CGST and SGST for your convenience.

GST Calculator India - Reverse GST & Compare Rates Tool

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GST Calculator Online: Reverse & Compare CGST, SGST & IGST

🔄 Reverse GST Mode 📊 Compare Tax Slabs 🛡️ No Login Required

India's most advanced GST Calculator. Easily switch between Inclusive/Exclusive modes, perform Reverse GST calculations, and Compare different tax rates side-by-side. Fast, accurate, and secure.

Regular Calculation

Reverse Calculation

Compare Rates

💡 What is GST?

The Goods and Services Tax (GST) is a comprehensive, multi-stage, destination-based tax that replaced various indirect taxes in India. It simplifies the tax structure by categorizing it into:

CGST (Central) SGST (State) IGST (Integrated)

🔍 Deep Dive: CGST vs SGST vs IGST vs UTGST

Understand which tax applies to your transaction and where the money goes.

Type of GST	Full Form	Applied On	Collected By
CGST	Central GST	Within State (Intra-state)	Central Govt.
SGST	State GST	Within State (Intra-state)	State Govt.
IGST	Integrated GST	Between States (Inter-state)	Central Govt.
UTGST	Union Territory GST	Within Union Territory	UT Govt.

📊 Compare GST Impact: Side-by-Side

See how different tax slabs change your final bill amount.

LOW IMPACT

5% GST Slab

Best for essential daily needs and basic food items.

STANDARD

12% & 18% Slabs

Most common for electronics, services, and household goods.

HIGH IMPACT

28% GST Slab

Applied to luxury items and demerit goods like ACs and Cars.

Why Compare GST?

Pricing Strategy: Businesses can compare slabs to set competitive market prices.
Tax Planning: Individuals can see how much they save on lower-taxed alternatives.
Inclusive vs Exclusive: Compare how much extra you pay over the base price across all rates.

Local Trade Rule

Agar aap apne hi state mein saaman bechte hain, toh CGST + SGST lagta hai. (e.g. 18% GST = 9% Central + 9% State).

Inter-State Rule

Agar saaman ek state se doosre state ja raha hai, toh pura tax IGST ke roop mein Central Govt ko jata hai.

GST Calculator User Guide

Making tax calculations simple, accurate, and lightning fast.

📋 Regular GST Calculation

Follow these steps to calculate tax for your business bills:

Step 01

Enter Base Amount & Select Type (Inclusive/Exclusive).

Step 02

Pick GST Rate & Distribution (Intra-State/Inter-State).

Get Detailed Breakdown Instantly! 🚀

🔄 Reverse GST Mode

Find original price from Total MRP

Input Final Amount (Total bill value).
Select the applied GST Rate.
Hit Calculate Original Amount to remove tax.

📊 Compare GST Rates

Side-by-side tax analysis

Enter the Base Amount to compare.
Check Multiple Rates (5%, 12%, 18%, 28%).
Analyze Cost Impact across different slabs.

Understanding GST in India

GST follows a dual structure implemented since July 1, 2017.

🏙️ Intra-State (Same State) Tax is split 50-50 into CGST (Center) and SGST (State).

🚚 Inter-State (Different States) Single tax called IGST is applied at full rate to the Center.

Standard Slabs: 0% | 5% | 12% | 18% | 28%

⚡ Quick GST Reference Chart (2026)

GST Rate	Common Categories
5%	Essential goods (Sugar, Oil, Spices, Tea)
12%	Processed food, Mobile phones, Computers
18%	Services, Capital goods, Banking, Soap
28%	Luxury items, Cars, Tobacco, ACs

Frequently Asked Questions (FAQ)

Quick answers to your common GST queries.

What is GST and why is it important? +

GST (Goods and Services Tax) is a single indirect tax that replaced multiple taxes like VAT, Service Tax, and Excise Duty. It’s important because it simplifies the tax structure, removes the "tax on tax" effect, and creates a unified Indian market.

Difference between CGST, SGST, and IGST? +

Intra-State (Same State): Tax is split 50-50 into CGST (Central) and SGST (State).

Inter-State (Different States): A single IGST (Integrated) is applied at the full rate.

How do I calculate GST on a product? +

Exclusive: Base Amount × (GST Rate / 100). (e.g., ₹1,000 + 18% = ₹1,180).
Inclusive: [Total Amount / (100 + GST Rate)] × 100. (e.g., ₹1,180 becomes ₹1,000 base).

What are the current GST slabs in India? +

0%: Essentials (Milk, Fruits); 5%: Packaged Food; 12%: Electronics; 18%: Most Services; 28%: Luxury Goods (Cars, AC).

How to find original price (Reverse GST)? +

Use Formula: Original Price = Final Price × 100 / (100 + GST Rate).

Alternatively, use our Reverse Calculation tab for instant results.

Who needs to register for GST? +

Businesses with turnover >₹20 Lakhs (₹10L for Special States), inter-state suppliers, e-commerce operators, and those paying tax under reverse charge must register for GST.

What is Input Tax Credit (ITC)? +

ITC allows businesses to reduce the tax they've already paid on inputs (purchases) from the tax they collect on outputs (sales). This avoids double taxation and lowers the cost of goods.

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GST Calculator India - Reverse & Compare GST (CGST, SGST, IGST) | ThinkForU