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GST calculator with the new GST rates

GST (Goods and Services Tax) is India's tax on the supply of goods and services, charged as CGST plus SGST within a state and as IGST between states.

Add or remove GST at the rates in force from 22 Sep 2025 (5%, 18%, 40% and special rates) with a CGST, SGST or IGST split. Free and runs in your browser.

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Rate presets follow the GST rate structure in force from 22 September 2025 (Notification 9/2025-Central Tax (Rate), 17 September 2025). Reviewed 30 October 2026.

The calculator does not decide which rate applies to your goods or services; that depends on the HSN or SAC classification. Confirm the rate before invoicing.

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Your inputs are saved as a draft in this browser only. Nothing is uploaded.

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Interactive workspace

Inputs

Used only when the preset is Custom rate below.
One line per item as description|amount|rate. When lines are present, the totals are calculated from them.

Result

More export options
Taxable value₹10,000.00
GST at 18%₹1,475.00
CGST + SGST₹1,475.00
Grand total₹11,475.00

Totals come from the line items; the Amount field is not used while line items are present. Lines without a rate use the selected rate.

Line items

DescriptionCodeQtyTaxableGST %GSTTotal
Software services1₹7,500.0018%₹1,350.00₹8,850.00
Support services1₹2,500.005%₹125.00₹2,625.00
GST rate: 18% (preset) for lines without their own rate
Calculation: GST added to the base amount
Taxable value: ₹10,000.00
GST: ₹1,475.00
CGST: ₹737.50
SGST: ₹737.50
Round-off: ₹0.00
Grand total: ₹11,475.00
Amount in words: Eleven Thousand Four Hundred Seventy Five Only

Examples

Add 18% GST within a state

Taxable value ₹10,000 at 18%: GST ₹1,800, split as CGST ₹900 and SGST ₹900. Invoice total ₹11,800.

Extract GST from an inclusive price

A GST-inclusive total of ₹11,800 at 18%: taxable value = 11,800 × 100 ÷ 118 = ₹10,000, and GST = ₹1,800.

Inter-state supply at 5%

Taxable value ₹50,000 shipped to another state at 5%: IGST ₹2,500, total ₹52,500.

Goods at the 40% rate

Taxable value ₹1,00,000 at 40%: GST ₹40,000 (CGST ₹20,000 and SGST ₹20,000 within a state), total ₹1,40,000.

Gold jewellery at 3%

Taxable value ₹2,00,000 at 3%: GST ₹6,000, split as CGST ₹3,000 and SGST ₹3,000. Total ₹2,06,000.

Discount before GST

₹10,000 with a ₹1,000 discount at 18%: taxable value ₹9,000, GST ₹1,620, total ₹10,620. GST is charged on the value after a discount shown on the invoice.

Line items with different rates

Enter one line per item as description|amount|rate, for example Software services|7500|18 and Goods at 5%|2500|5. Each line is taxed at its own rate.

How to use it

  1. Enter the amount and pick a GST rate preset, or choose Custom rate and enter the rate.
  2. Choose Add GST to work up from a taxable value, or Extract GST to work back from a GST-inclusive total.
  3. Select intrastate for CGST plus SGST, or interstate for IGST.
  4. Optionally add line items as description|amount|rate, then read the tax split and total and copy, download, or print it.

Questions

What are the GST rates from 22 September 2025?
The two main rates are 5% and 18%. Exempt and nil-rated supplies are 0%, and 40% applies to specified luxury and sin goods such as aerated drinks, mid-size and large cars, yachts, and private aircraft. Special rates remain for gold, silver and jewellery (3%), rough diamonds and precious stones (0.25%), and cut and polished diamonds (1.5%).
What happened to the 12% and 28% slabs?
They were removed for most items, which moved to 5% or 18%, and some to 40%. Tobacco and pan masala stay at the earlier rate of 28% plus compensation cess until the compensation-cess loans are repaid.
How do I calculate GST from a GST-inclusive price?
GST = inclusive price × rate ÷ (100 + rate). At 18%, GST on ₹11,800 is 11,800 × 18 ÷ 118 = ₹1,800, leaving a taxable value of ₹10,000. Choose Extract GST from total to do this automatically.
Does this calculate CGST, SGST, and IGST separately?
Yes. Intrastate transactions split the tax into equal CGST and SGST, each half the rate, while interstate transactions show a single IGST amount at the full rate.
When should I use a custom rate?
When the rate you need is not a preset, such as 1.5% for cut and polished diamonds, or when you are recalculating an older invoice issued before 22 September 2025 at 12% or 28%.
Should I fill in compensation cess?
Leave it at 0 unless the goods still attract compensation cess, such as tobacco products during the transition. For most supplies after 22 September 2025 there is no compensation cess.
Which rate applies to my product or service?
It depends on the HSN code for goods or the SAC code for services, as notified by the government. Check the notified rate schedule or ask a tax professional; the calculator applies the rate you choose.
Is my data sent anywhere?
No. The calculation runs entirely in your browser and nothing is uploaded.

Sources

Last reviewed

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