Calculate GST, Sales Tax & Reverse Tax Instantly
Free tax calculator for Indian GST rates (5%, 12%, 18%, 28%). Add tax to any amount or extract tax from a tax-inclusive price. Shows pre-tax amount, tax amount, and total.
How It Works
Tax = Price × (Rate/100); Inclusive: Pre-tax = Price / (1 + Rate/100)For tax-exclusive amounts, multiply by the tax rate percentage to get the tax. For tax-inclusive amounts, divide by (1 + tax rate) to extract the pre-tax price. The difference is the tax amount.
Quick Tips
GST Rates
India has 4 GST slabs: 5% (essentials), 12% (processed food), 18% (most goods/services), 28% (luxury items, sin goods).
Reverse Tax
If a MRP includes tax, toggle "Tax Included in Price" to extract the base price and tax amount separately.
GSTIN
Every registered business has a 15-digit GSTIN. Verify it on the GST portal before claiming input tax credit.
Composition Scheme
Small businesses (turnover < ₹1.5 crore) can opt for composition scheme with lower rates: 1-6% instead of regular GST.
Step-by-Step Instructions
- 1Enter the amount (price of goods or services).
- 2Set the tax rate (use Indian GST presets or enter custom rate).
- 3Toggle whether the amount includes or excludes tax.
- 4View the pre-tax price, tax amount, and total price instantly.
Frequently Asked Questions
What is the GST rate in India?▼
India has 4 main GST slabs: 5% (essential items like food grains), 12% (processed foods, fabrics), 18% (most goods and services like electronics, restaurants), and 28% (luxury cars, tobacco, aerated drinks).
How do I calculate tax from a total that includes tax?▼
Toggle "Tax Included in Price" and enter the total amount. The calculator will extract the base price and tax amount. For example, ₹118 inclusive at 18% GST = ₹100 base + ₹18 tax.
What is the difference between CGST and SGST?▼
For intra-state sales, GST is split equally: CGST (central) + SGST (state). For inter-state sales, IGST goes entirely to the center. The total rate remains the same.
Is MRP inclusive of GST?▼
Yes. By law, MRP (Maximum Retail Price) must be inclusive of all taxes including GST. You can use the reverse tax mode to find the pre-tax price from MRP.