How do I add GST to a price?

Use: Total = Base × (1 + GST%). For 18% GST on ₹1,000: Total = 1000 × 1.18 = ₹1,180.

How do I remove GST from a GST-inclusive price?

Use: Base = Inclusive ÷ (1 + GST%). For ₹1,180 with 18% GST: Base = 1180 ÷ 1.18 = ₹1,000.

What are the GST slabs in India?

Common slabs are 0%, 5%, 12%, 18% and 28%. The applicable rate depends on the goods/services category.

What is CGST, SGST and IGST?

For intra-state supplies: GST is split equally into CGST and SGST. For inter-state supplies: IGST applies (sum of CGST+SGST).

GST Calculator (India) – Add or Remove GST Online (2025)

Instant GST Calculation

Enter amount, choose Add GST or Remove GST, select rate and supply type (intra/inter).

Amount (₹)

GST Rate

Mode

Supply Type

Base Amount

₹0.00

GST Amount

₹0.00

CGST

₹0.00

SGST

₹0.00

Total (Payable)

₹0.00

Tip: Use Remove GST when you only know an inclusive price (MRP) and want the base value.

How GST Works (Quick Guide)

Formulas you can trust — fast checks for 5%, 12%, 18%, 28% (and custom).

Formulas

Add GST: Total = Base × (1 + Rate) • Example (18% on ₹1,000): ₹1,180
Remove GST: Base = Inclusive ÷ (1 + Rate) • Example (₹1,180 incl. 18%): ₹1,000

CGST, SGST & IGST

For intra-state supplies, GST splits equally into CGST and SGST. For inter-state supplies, IGST applies (sum of CGST+SGST).

GST Slabs (India)

Slab	Common Use
0%	Essential goods/services (select)
5%	Basic goods/services
12%	Standard goods/services
18%	Most services & many goods
28%	Selected luxury/sin goods

Examples

₹2,500 + 18% GST → GST ₹450 → Total ₹2,950
₹1,770 inclusive at 18% → Base ₹1,500 → GST ₹270

FAQs

Is rounding supported? Yes — choose nearest rupee or to paise.

Can I set a custom rate? Yes — pick “Custom” to enter any % (e.g., 7.5%).

Disclaimer: This tool is for quick calculations only. Always confirm the correct GST rate for your specific goods/services.

GST Calculator (India)

Instant GST Calculation

Base Amount

GST Amount

CGST

SGST

IGST

Total (Payable)

Why use this GST Calculator?

Pro Tip for Businesses