Beginner's Guidance
A Goods and Services Tax (GST) calculator back-calculates tax inclusive portions or appends tax to base transactions using current standard regional tax slabs.
Calculator
Gst Calculator
A practical calculator page with formula notes, example use, related tools, and clear disclaimers for safer decisions.
Calculator results are educational estimates only, not financial, tax, legal or income advice. Results are not guaranteed.
Estimate Your Numbers
Get instant results processed offline inside your local browser.
Actionable Steps
Input your transaction's base value, select the matching tax slab (such as 5%, 12%, 18%, or 28%), and verify CGST, SGST, and total inclusive results.
Frequently Asked Questions
How is GST calculated?
To add tax: Amount * (Rate / 100). To back-calculate inclusive tax: Total - (Total * (100 / (100 + Rate))).
What are CGST and SGST?
Central GST and State GST are applied equally on intra-state billing. For example, an 18% slab splits into 9% CGST and 9% SGST.
Is this calculator official?
This is an educational estimation calculator. Always verify accounting figures with a certified CA before filing returns.