GST Calculator - 18% Slab
Add or remove 18% GST from any amount. Covers standard rate - most goods and services.
Base Price
Rs. 10,000
Rs. 10,000 example
GST @ 18%
Rs. 1,800
CGST Rs. 900 + SGST Rs. 900
Total Price
Rs. 11,800
GST-inclusive price
Add 18% GST - Quick Reference Table
GST added on top of a GST-exclusive base price, split into CGST + SGST.
| Base Amount | CGST (9%) | SGST (9%) | Total GST | Final Price |
|---|---|---|---|---|
| Rs. 100 | Rs. 9 | Rs. 9 | Rs. 18 | Rs. 118 |
| Rs. 500 | Rs. 45 | Rs. 45 | Rs. 90 | Rs. 590 |
| Rs. 1,000 | Rs. 90 | Rs. 90 | Rs. 180 | Rs. 1,180 |
| Rs. 2,500 | Rs. 225 | Rs. 225 | Rs. 450 | Rs. 2,950 |
| Rs. 5,000 | Rs. 450 | Rs. 450 | Rs. 900 | Rs. 5,900 |
| Rs. 10,000 | Rs. 900 | Rs. 900 | Rs. 1,800 | Rs. 11,800 |
| Rs. 25,000 | Rs. 2,250 | Rs. 2,250 | Rs. 4,500 | Rs. 29,500 |
| Rs. 50,000 | Rs. 4,500 | Rs. 4,500 | Rs. 9,000 | Rs. 59,000 |
| Rs. 1,00,000 | Rs. 9,000 | Rs. 9,000 | Rs. 18,000 | Rs. 1,18,000 |
Remove 18% GST (Reverse) - Extract Base from an Inclusive Price
Start from a GST-inclusive amount and back out the base price and the 18% GST inside it.
| Inclusive Amount | Base (excl. GST) | GST (18%) | CGST (9%) | SGST (9%) |
|---|---|---|---|---|
| Rs. 1,000 | Rs. 847 | Rs. 153 | Rs. 76 | Rs. 76 |
| Rs. 5,000 | Rs. 4,237 | Rs. 763 | Rs. 381 | Rs. 381 |
| Rs. 10,000 | Rs. 8,475 | Rs. 1,525 | Rs. 763 | Rs. 763 |
| Rs. 25,000 | Rs. 21,186 | Rs. 3,814 | Rs. 1,907 | Rs. 1,907 |
| Rs. 50,000 | Rs. 42,373 | Rs. 7,627 | Rs. 3,814 | Rs. 3,814 |
| Rs. 1,00,000 | Rs. 84,746 | Rs. 15,254 | Rs. 7,627 | Rs. 7,627 |
Enter your amount below
Examples at 18%: Most goods & services · Electronics: TVs, ACs, fridges, mobiles · Small cars & two-wheelers · AC restaurants, IT, banking
Base Amount
₹10,000
GST Amount
₹1,800
Total Amount
₹11,800
Tax Breakup
Intra-state supply uses CGST + SGST - inter-state supply uses IGST (same total)
What falls under the 18% GST slab?
The 18% GST slab covers standard rate - most goods and services.
- -Most manufactured goods and services
- -Electronics: TVs, ACs, refrigerators, washing machines, mobiles
- -Small cars and two-wheelers
- -AC restaurants, IT/SaaS, banking and financial services
- -Many items moved down from the old 28% slab under GST 2.0
SAC 997 (IT services), HSN 8418 (refrigerators), HSN 8528 (TVs), HSN 8703 (small cars). GST rates are subject to revision by the GST Council. Always verify the current rate for your specific product or service.
Common items taxed at 18% GST
A quick-reference list of categories most people search for at the 18% rate:
Classifications are set by the GST Council and can move between slabs. Confirm the current rate for your exact HSN/SAC code before invoicing.
How to calculate 18% GST
To add 18% GST to a base price:
GST Amount = Base Price x 18% = Base Price x 0.18
Total Price = Base Price + GST Amount
To remove 18% GST from a GST-inclusive price:
Base Price = Total Price / 1.18
GST Amount = Total Price - Base Price
For intra-state supply, GST splits equally into CGST and SGST (each 9%). For inter-state supply, the full 18% applies as IGST.
Frequently Asked Questions
How do I calculate 18% GST on an amount?▾
To add 18% GST, multiply the base price by 0.18. For a base price of Rs. 10,000, GST = Rs. 10,000 x 18% = Rs. 1,800, making the total price Rs. 11,800. For intra-state supply this splits equally into CGST (Rs. 900) and SGST (Rs. 900); for inter-state supply the full Rs. 1,800 is charged as IGST.
How do I remove 18% GST from a GST-inclusive price?▾
To remove 18% GST from a GST-inclusive price, divide by 1.18. For example, on a GST-inclusive price of Rs. 11,800, the base price = Rs. 11,800 / 1.18 = Rs. 10,000, so the embedded 18% GST is Rs. 1,800.
What is the CGST and SGST split for 18% GST?▾
18% GST is levied as two equal halves for supply within the same state: CGST at 9% and SGST at 9%. On a Rs. 10,000 base, that is Rs. 900 CGST + Rs. 900 SGST = Rs. 1,800 total GST. If the supply crosses state lines, the same 18% is charged as a single IGST of Rs. 1,800 instead.
How much is 18% GST on Rs. 1,000 and Rs. 50,000?▾
At 18%, Rs. 1,000 attracts Rs. 180 of GST for a total of Rs. 1,180, and Rs. 50,000 attracts Rs. 9,000 of GST for a total of Rs. 59,000. GST is directly proportional to the base amount, so you can scale these figures for any price.
What is the reverse 18% GST formula?▾
The reverse (GST-exclusive) formula divides the inclusive amount by 1.18: Base = Total / 1.18. The GST portion is then Total minus Base. For a Rs. 11,800 bill this gives a base of Rs. 10,000 and GST of Rs. 1,800. Use this to work out the pre-tax value from an MRP or a tax-inclusive invoice.
Is the price on the label (MRP) inclusive of 18% GST?▾
Yes. Under legal metrology rules the MRP printed on packaged goods is the maximum price inclusive of all taxes, including 18% GST. To find the pre-tax value, apply the reverse formula: for an MRP of Rs. 11,800 at 18%, the base is Rs. 10,000 and the embedded GST is Rs. 1,800.
What goods and services fall under the 18% GST slab?▾
The 18% GST slab covers standard rate - most goods and services. Examples include: Most manufactured goods and services, Electronics: TVs, ACs, refrigerators, washing machines, mobiles, Small cars and two-wheelers, AC restaurants, IT/SaaS, banking and financial services, Many items moved down from the old 28% slab under GST 2.0. SAC 997 (IT services), HSN 8418 (refrigerators), HSN 8528 (TVs), HSN 8703 (small cars).
Is 18% GST the same across all states in India?▾
Yes. GST is a unified nationwide tax, so the 18% rate is identical in every state and union territory. Only the split differs by supply type: intra-state supply is charged as CGST 9% + SGST 9%, while inter-state supply is charged as a single IGST of 18%. The total tax you pay is the same either way.