How to use this tool
- Choose whether you are adding tax to a price or removing it from a total.
- Pick a preset (UK VAT, India GST or a US state) or type your own rate.
- Read the net price, tax amount and total. For GST the CGST/SGST split is shown.
What falls under 18%
Under GST 2.0, 18% is the standard rate for most goods and services, including many electronics, restaurant services in some categories and professional services. Essentials fall under 5%, and luxury and sin goods under 40%. Check the CBIC rate schedule for your HSN or SAC code.
| Amount | GST 18% | CGST 9% | SGST 9% | Total |
|---|---|---|---|---|
| ₹500 | ₹90 | ₹45 | ₹45 | ₹590 |
| ₹1,000 | ₹180 | ₹90 | ₹90 | ₹1,180 |
| ₹10,000 | ₹1,800 | ₹900 | ₹900 | ₹11,800 |
Frequently asked questions
How do I calculate 18% GST?
Multiply the amount by 0.18 for the GST, or by 1.18 for the total.
What is CGST and SGST in 18% GST?
9% CGST and 9% SGST for sales within the same state.
Is 18% still a GST slab?
Yes. Under GST 2.0 the main rates are 5% and 18%, with 40% for luxury and sin goods.
Need more detail? See the full Sales Tax, VAT & GST Calculator guide.
Sources and references
- GOV.UK: VAT rates
- GST Council of India: official rate decisions
- CBIC tax information portal: GST notifications
- Tax Foundation: State and local sales tax rates