GST Calculator
Add or remove GST from any amount. Supports all GST slabs with CGST/SGST breakdown.
₹0.00
@ 18% GST (9% CGST + 9% SGST)
Base Amount
₹
Final Amount
₹
Base Amount
₹
CGST (9%)
₹
SGST (9%)
₹
Total GST
₹
Amount Breakdown
India’s Goods and Services Tax (GST) replaced many indirect taxes with a unified system. Businesses and consumers need quick math to add or remove tax at the correct slab.
GST rate slabs in India
Five main rates apply: 5% (essentials), 12%, 18% (common for services), and 28% (luxury and sin goods). Some items are zero-rated or exempt.
Always confirm the correct rate via HSN/SAC codes on invoices. This calculator applies the rate you select—it does not classify products automatically.
CGST and SGST split
Within a state, half the GST goes to the centre (CGST) and half to the state (SGST). For 18% GST on ₹10,000, total tax is ₹1,800—₹900 CGST and ₹900 SGST.
Inter-state transactions charge Integrated GST (IGST) at the full rate instead of splitting CGST/SGST.
Inclusive vs exclusive amounts
Exclusive pricing adds tax on top of the base amount. Inclusive pricing embeds tax in the sticker price—you back out the base first.
Retail menus and MRP often show inclusive prices; B2B invoices may quote exclusive base plus GST.
Add GST (exclusive)
Remove GST (inclusive)
CGST / SGST
Last updated: August 6, 2026
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