Calculate CGST, SGST & IGST instantly for any amount and GST rate. Free, no login needed. Works for 5%, 12%, 18%, and 28% GST slabs.
GST Rate Quick Reference
Intra vs Inter-State?
Intra-state — buyer and seller in the same state. GST splits equally as CGST + SGST.
Inter-state — buyer and seller in different states. Full GST charged as IGST.
Put GST on your invoices automatically
Ozydo calculates CGST, SGST & IGST for every invoice — no manual maths. Free GST invoice app for India.
Create Free GST Invoice →Enter the amount
Type the transaction amount in rupees. Choose whether GST should be added on top (exclusive) or is already included in the price (inclusive).
Select GST rate
Pick the applicable slab — 0%, 5%, 12%, 18%, or 28% — based on the goods or services. Most services in India are 18%.
Choose supply type
Intra-state (same state) shows CGST + SGST. Inter-state (different states) shows IGST at the full rate.
Get the breakdown
Instantly see base amount, CGST, SGST or IGST, total GST amount, and total payable. Copy the breakdown to clipboard.
GST Exclusive (Add GST to price)
Total = Amount × (1 + GST Rate / 100)
₹10,000 + 18% GST = ₹11,800
CGST = ₹900 | SGST = ₹900
GST Inclusive (Extract GST from total)
Base = Total / (1 + GST Rate / 100)
₹11,800 total at 18% GST
Base = ₹10,000 | Tax = ₹1,800
| Base Amount | GST Rate | GST Amount | CGST | SGST | Total |
|---|---|---|---|---|---|
| ₹1,000.00 | 5% | ₹50.00 | ₹25.00 | ₹25.00 | ₹1,050.00 |
| ₹1,000.00 | 12% | ₹120.00 | ₹60.00 | ₹60.00 | ₹1,120.00 |
| ₹1,000.00 | 18% | ₹180.00 | ₹90.00 | ₹90.00 | ₹1,180.00 |
| ₹1,000.00 | 28% | ₹280.00 | ₹140.00 | ₹140.00 | ₹1,280.00 |
| ₹5,000.00 | 18% | ₹900.00 | ₹450.00 | ₹450.00 | ₹5,900.00 |
| ₹10,000.00 | 18% | ₹1,800.00 | ₹900.00 | ₹900.00 | ₹11,800.00 |
| ₹25,000.00 | 18% | ₹4,500.00 | ₹2,250.00 | ₹2,250.00 | ₹29,500.00 |
| ₹50,000.00 | 18% | ₹9,000.00 | ₹4,500.00 | ₹4,500.00 | ₹59,000.00 |
Every Ozydo invoice calculates CGST, SGST, and IGST per line item automatically. No maths, no errors. Free for Indian small businesses.
Create Free GST Invoice →