GST Calculator

Amount
GST Rate (%)
%
Net Amount (Excl. Tax): 0
Total GST Amount: 0
CGST (Central Tax): 0
SGST (State Tax): 0
Gross Amount (Incl. Tax): 0

5-in-1 Online GST Calculator

Calculating Goods and Services Tax (GST) is essential for transparent business billing and accounting. This 5-in-1 GST Calculator helps you instantly add or remove tax, run reverse calculations, and split totals into CGST and SGST.

How the Calculator Modes Work

1. Standard GST Calculator

Computes the applicable tax amount on any net base price and provides the final invoice value instantly.

2. Add GST Mode

Used when you have an exclusive base price and want to add the specific tax percentage to find the gross billing amount.

3. Remove GST Mode

Ideal when dealing with tax-inclusive (MRP) prices, allowing you to extract the original base cost and tax component cleanly.

4. GST Reverse Calculator

Helps accountants and business owners back-calculate original values and input tax credits (ITC) from gross transaction figures.

5. CGST / SGST Split Calculator

For intra-state transactions, this mode automatically divides the total calculated GST equally into 50% CGST (Central Tax) and 50% SGST (State Tax).

GST Calculation Formulas

Add GST: Tax Amount = (Base Price × GST Rate) ÷ 100
Remove GST: Tax Amount = Gross Price – [Gross Price ÷ (1 + GST Rate / 100)]

Standard GST Slabs in India

GST Rate Applicability & Categories
0% (Exempt) Unbranded essential foods, healthcare services
5% Household necessities, mass consumption goods
18% Standard industrial goods, IT and professional services
40% Luxury items, tobacco, and specified sin goods

Frequently Asked Questions (FAQs)

Q1. What is the difference between CGST and SGST?

For transactions within the same state, the total GST is split equally: CGST goes to the Central Government, and SGST goes to the State Government.

Q2. What is inclusive vs exclusive GST?

Exclusive price means tax needs to be added on top, while inclusive price already bundles the tax inside the final listed cost.

Disclaimer: This calculator is designed for general mathematical estimations. Please verify official HSN/SAC classification codes and tax rates on the official GST portal before filing returns.