GST & Business

GST Calculator

Most used

Quick answer: The FinTax24 GST Calculator instantly splits any taxable amount into CGST, SGST or IGST for intra-State and inter-State supplies across all four current GST slabs (0%, 5%, 18%, 28%). It handles add-GST (exclusive) and remove-GST (inclusive) modes, optional compensation cess for demerit goods, and reverse-charge flagging, helping traders, retailers, freelancers and businesses verify tax liability before invoicing under the CGST Act 2017.

GST Calculator

Compute CGST, SGST, and IGST for any transaction.

1 Enter Details

Quick scenarios

Base price (Add GST) or invoice value (Remove GST).

India uses four GST slabs after the 12% slab was discontinued in the 2025-26 rate rationalisation: 0%, 5%, 18% and 28%. Pick by HSN/SAC code, not by intuition.

2 Results

Results are ready but hidden

Click Calculate on the left to reveal the breakdown.

Disclaimer: Results are for indicative purposes only and may vary based on actual rates, rules, and policies. Please consult a FinTax24 expert for binding advice.

HSN / SAC quick reference

Common goods and services with their current slab + cess.

Updated Apr 2026
HSN / SAC codeItem / serviceSlab
0101-0106Live animals (cattle, horses, sheep)0%
0401-0402Milk and cream (fresh, not concentrated)0%
0701-0713Fresh vegetables0%
0801-0814Fresh fruits0%
1001, 1006Rice, wheat (unpacked / unbranded)0%
1701Sugar (open market, branded < INR 1,000 pack)5%
0901-0902Coffee (roasted, instant)5%
3003-3004Medicines, pharmaceuticals5%
9964Restaurant / outdoor catering service5%
9965Transport of passengers (rail, road, air)5%
8517Mobile phones, smartphones18%
8471Laptops, computers, IT equipment18%
9983IT / software / professional services18%
9982Freelance / consultancy / advocate services18%
8703Cars (small <1,200 cc, sub-4 m, < INR 15 L)28% + 1% cess
8703Cars (mid-size 1,200-1,500 cc, sub-4 m)28% + 22% cess
8703Cars (large >1,500 cc, > INR 15 L)28% + 43% cess
2401Tobacco products (cigarettes)28% + 60% cess
2106, 2404Pan masala, gutkha28% + 96% cess
8528TV, monitor >32 inches28%
8415Air-conditioners (all kinds)28%
2523Portland cement28%

Indicative only. Verify the exact HSN/SAC code and rate against the currentGST Council scheduleandCBIC rate notificationbefore invoicing.

GST on common items

Quick answers for everyday supplies — what slab, what treatment.

GST on rent

Residential rent is exempt. Commercial rent attracts 18% GST.

GST on restaurant

5% on eat-in, 18% on room service, 5% on takeaway (non-AC).

GST on freelance income

18% on professional / consultancy fees; RCM if client abroad.

GST on mobile phones

18% on sale, 18% on repairs, 9% CGST + 9% SGST intra-State.

GST on petrol

Petroleum crude, ATF, natural gas, aviation fuel outside GST.

GST on gold

3% on raw gold, 5% on finished gold jewellery (effective 2025).

GST on export

Zero-rated with LUT; IGST paid can be refunded as ITC.

GST on import

IGST + basic customs duty at port; ITC available on IGST.

How a GST invoice looks

Section 31 mandates 15 mandatory fields. Below is a working sample for an INR 10,000 intra-State supply at 18%.

TAX INVOICESample · intra-State · 18%
Supplier
ABC Traders Pvt Ltd
GSTIN: 27AAACR1234R1Z5
Maharashtra
Invoice no.
INV-2026/00457
Date: 04 Apr 2026
Taxable valueINR 10,000.00
CGST @ 9%INR 900.00
SGST @ 9%INR 900.00
Total invoice valueINR 11,800.00

State-level GST facts

Two facts that catch first-time filers: five petroleum products are outside GST, and alcohol for human consumption is fully outside GST for every State.

  • Petroleum crude, natural gas, aviation turbine fuel, diesel and petrol are currently outside GST and attract VAT + excise separately.
  • Alcoholic liquor for human consumption is outside GST; States levy their own VAT.
  • GST rates and slabs are uniform across all 28 States and 8 UTs — there is no special-category slab reduction for North-Eastern or hilly States.

How to use this calculator

Follow these 6 steps for an accurate result.

  1. 1

    Enter the taxable amount

    Type the base value (before GST for exclusive mode, or invoice value for inclusive mode) in the Amount field.

  2. 2

    Pick Add or Remove GST

    Choose "Add GST (exclusive)" to compute tax on a base price, or "Remove GST (inclusive)" to extract tax from a GST-inclusive invoice value.

  3. 3

    Pick the GST slab

    Select 0%, 5%, 18% or 28% as per HSN/SAC notification. The 12% slab was discontinued in the 2025-26 GST Council rationalisation.

  4. 4

    Add compensation cess (optional)

    If your item is in the 28% slab and attracts a compensation cess (cars, tobacco, aerated drinks, pan masala), enter the cess percentage. The cess field appears only when 28% is selected.

  5. 5

    Select transaction type

    Choose Intra-State (CGST + SGST) or Inter-State (IGST) — affects how the tax is split.

  6. 6

    Read the result

    The calculator displays CGST, SGST or IGST, optional cess, total tax and total invoice value instantly after you click Calculate.

Key takeaways

  • Covers all four current GST slabs (0%, 5%, 18%, 28%) after the 12% slab was discontinued in the 2025-26 rate rationalisation.
  • Separates CGST + SGST for intra-State supplies and IGST for inter-State supplies automatically.
  • Compensation cess support — enter any cess rate (e.g. 22% on cars, 60% on pan masala) on top of the 28% slab.
  • Both Add-GST (exclusive) and Remove-GST (inclusive) modes supported for trade and reconciliation work.
  • Quick-preset chips for restaurant, mobile, freelance, car-with-cess, MRP back-calc and GTA-RCM scenarios.
  • Free for unlimited calculations — no sign-up, no data stored on FinTax24 servers.

Frequently asked questions

Quick answers to common questions about gst calculator.

How is GST calculated in India?

GST is calculated as a percentage of the transaction value. For intra-State supplies, the rate is split equally into CGST (Central GST) and SGST (State GST). For inter-State supplies, IGST (Integrated GST) applies at the full rate. Example: a ₹10,000 invoice at 18% intra-State attracts ₹1,800 total tax (₹900 CGST + ₹900 SGST).

What are the current GST slabs in India?

India currently has four GST slabs after the 2025-26 rate rationalisation: 0% (essential goods), 5% (basic goods, restaurants, transport), 18% (the most common slab — services, electronics, IT) and 28% (demerit and luxury goods). The earlier 12% slab has been merged into 5% and 18%. Items in the 28% slab may additionally attract compensation cess. Always verify the HSN/SAC-wise rate on the official GST portal before invoicing.

What is the difference between CGST, SGST and IGST?

CGST (Central GST) and SGST (State GST) apply equally on intra-State supplies. IGST (Integrated GST) replaces both on inter-State supplies and is collected by the Centre. The IGST amount eventually gets shared between the origin and destination States through the GST Council settlement.

When should I use the Remove-GST (inclusive) mode?

Use Remove-GST when you have a GST-inclusive invoice value (such as MRP or an end-customer bill) and need to back-calculate the base price and the embedded tax. This is common in retail reconciliation, expense claims, and reverse-charge verification.

Does the calculator handle GST compensation cess?

Yes. When you pick the 28% slab, a Compensation Cess field appears. Enter any cess percentage (1% to 96% — common rates are 1% on rough precious stones, 12% on small cars, 22% on mid-size cars, 43% on large cars, 60% on pan masala and 96% on certain tobacco products). The cess is computed on the base value and shown as a distinct line in the result.

What is GST reverse-charge and when does it apply?

Reverse-charge (RCM) shifts the GST payment obligation from the supplier to the recipient. Common cases: services from Goods Transport Agencies, renting from an unregistered landlord, legal services from advocates, director sitting fees, and certain imports. Tick the Reverse Charge checkbox on the calculator to flag the calculation as RCM — the math does not change but the tax must be self-deposited by you via the GST portal.

Is the FinTax24 GST Calculator free to use?

Yes — the calculator is 100% free for unlimited calculations, no sign-up required and no data is stored on our servers. For binding advice, GST return filing or reconciliation support, our indirect-tax experts are available on WhatsApp.

Sources & authority: For regulations on gst calculator, refer to gst.gov.in, mca.gov.in, incometax.gov.in, rbi.org.in, CBIC GST portal, CGST Act, 2017, GST Council rate schedule, Notification 01/2017-Central Tax (Rate).

Last reviewed by: FinTax24 Indirect Tax Desk · Reviewed on:

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