
Add GST to a price or remove it from a GST-inclusive amount, with the CGST, SGST or IGST split for your invoice.
Check the correct rate for your goods or services (HSN/SAC) before invoicing.
The calculator works in both directions. Start from a price before tax to find the GST and invoice total, or start from a GST-inclusive price to find the taxable value hidden inside it.
Use it when quoting a price, checking a supplier’s bill or working out the margin on an MRP that already includes GST.
The Council left rates unchanged and said future rate changes will be decided once a year and take effect from the start of the next financial year. Most procedural changes start on 1 April 2027.
On the 56th GST Council’s recommendation, most items at 12% moved to 5% and most at 28% moved to 18%. A 40% rate now applies to luxury and “sin” goods.
From the July 2025 tax period, the auto-filled liability in GSTR-3B can’t be edited. Fix sales figures in GSTR-1 or GSTR-1A before filing. Returns more than three years late can no longer be filed.
Official sources this tool is based on:
Further reading
Last reviewed on 16 October 2026. Results are estimates to help you plan, not legal or tax advice. Check notifications on the official portals before you file or pay.


We file and pay on time every month, and remind you before each due date.