india • INR

GST Bill Generator & Calculator India 2026

Free GST invoice calculator for Indian businesses. Calculate GST at the current 0%, 5%, 18%, and 40% GST 2.0 slabs. Generate invoices with HSN codes, ITC (Input Tax Credit), SGST, CGST, IGST. Perfect for small businesses, e-tailers, and service providers.

Last revised 20 August 2026

By Team GlobalCalqulate · About our editorial standards

Invoice Details

Item / Service Name

Description of the product or service.

Quantity

Number of units.

Rate per Unit (₹)

Price per unit before GST.

HSN / SAC Code

HSN code for goods (4-8 digits) or SAC for services.

GST Rate (%)

GST 2.0 (effective 22 Sept 2025) collapsed the old 5/12/18/28% structure into 5/18/40%. A few items outside these four slabs still carry special rates (e.g. gold, silver and precious stones at 3%; rough diamonds at 0.25%) — select the correct HSN-specific rate for those separately if it doesn't appear here.

Sale Type

Seller & Buyer Details

Seller GSTIN

Your GSTIN (Format: 27ABCDE1234F1Z5).

Buyer GSTIN (for B2B)

Buyer's GSTIN – required for ITC claim.

Invoice Number

Unique sequential invoice number.

Show ITC details on the invoice.

Financial Disclaimer: This tool estimates GST amounts and generates an illustrative invoice layout based on the rate and sale type you select. It does not validate GSTIN format/status, HSN/SAC code correctness, or e-invoicing/e-way bill requirements, and it is not a substitute for GST-compliant billing software or a qualified GST practitioner. Verify rates for your specific HSN/SAC code on the GST portal (gst.gov.in) before filing. Full disclaimer.

Sources & methodology

Formula:: Standard GST computation under the Central Goods and Services Tax Act, 2017, using the GST 2.0 rate slabs effective 22 September 2025.
Reference:: Central Board of Indirect Taxes and Customs (CBIC)
Content last updated:: August 2026
Scheduled re-verification:: August 2027

Calculation type: Rule-based calculation. Uses 2026 rates and thresholds. Figures are taken from Central Board of Indirect Taxes and Customs (CBIC) — see sources below.

Your entries stay on this device. This calculator runs entirely in your browser — the figures you type are not sent to us or to anyone else. The page itself uses cookies for analytics and advertising, described in the privacy policy.

Formula & methodology

Formula used

Taxable Value = Quantity × Rate; GST = Taxable Value × Rate%; Total = Taxable Value + GST

Taxable value is quantity multiplied by the rate per unit, before tax. GST is then applied to the taxable value at the selected rate (0%, 5%, 18%, or 40% under GST 2.0). For an intra-state sale, the GST amount is split equally between SGST and CGST (half the rate each); for an inter-state sale, the full amount is charged as IGST. The total invoice value is the taxable value plus GST. If ITC is enabled and a buyer GSTIN is entered, ITC available is shown as the GST amount charged on this invoice — the actual credit still depends on your buyer being GST-registered and filing correctly.

Origin: Standard GST computation under the Central Goods and Services Tax Act, 2017, using the GST 2.0 rate slabs effective 22 September 2025.

Variable definitions

Symbol	Meaning	Unit
Taxable Value	Taxable value. Quantity multiplied by the rate per unit, before GST.	currency
Rate%	GST rate. The applicable GST slab for the selected HSN/SAC code — 0%, 5%, 18%, or 40% under GST 2.0.	percent
SGST / CGST	State and Central GST. For intra-state sales, GST is split equally between the state and central government.	currency
IGST	Integrated GST. For inter-state sales, the full GST amount is charged as IGST to the central government.	currency

Limitations

This is a rate calculator, not compliant billing software — it does not validate GSTIN format/status, HSN/SAC code correctness, or e-invoicing/e-way bill requirements.
ITC availability shown here assumes the invoice and buyer meet all statutory conditions; actual ITC eligibility depends on GSTR filings and matching by both parties.

This page is educational. It applies published rates and thresholds to the figures you enter and shows the arithmetic behind the result. It is an estimate, not a tax determination: your actual liability depends on circumstances this calculator does not collect, and only the relevant tax authority — or an accountant who can see your full position — can confirm what you owe.

Sources & references

GST rate schedule following the 56th GST Council meeting (GST 2.0), effective 22 Sept 2025 — Central Board of Indirect Taxes and Customs (CBIC)

Help & FAQs

Frequently Asked Questions

Clear answers to common questions to help you use this calculator confidently.

What are the current GST rates in India (GST 2.0)?

Tap to view the answer

Since 22 September 2025 (56th GST Council meeting), India mainly uses four slabs: 0% (exempt/nil-rated), 5% (merit rate), 18% (standard rate), and 40% (de-merit rate for luxury and sin goods). The earlier 12% and 28% slabs were largely folded into 5%/18% and 18%/40% respectively. A few items — gold, silver, precious stones (3%), rough diamonds (0.25%) — keep separate rates outside this structure.

What's the difference between SGST/CGST and IGST?

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For an intra-state sale (buyer and seller in the same state), GST is split equally between State GST (SGST) and Central GST (CGST). For an inter-state sale, the full amount goes to Integrated GST (IGST) instead. This calculator switches between the two based on the Sale Type you select.

Do I need to register for GST?

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Registration is mandatory once your aggregate annual turnover crosses ₹40 lakh for goods suppliers (₹20 lakh in a few special-category states) or ₹20 lakh for service providers (₹10 lakh in special-category states: Manipur, Mizoram, Nagaland, Tripura). Below the threshold, registration is optional but is needed if you want your buyers to claim Input Tax Credit (ITC) on your invoices.

Can my customer claim Input Tax Credit (ITC) on my invoice?

Tap to view the answer

Only if you're GST-registered with a valid GSTIN, the invoice carries the correct HSN/SAC code, and your customer is also GST-registered. An invoice with a wrong HSN code or missing GSTIN can invalidate the buyer's ITC claim.

What is the penalty for incorrect or missing GST invoices?

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Under Section 122 of the CGST Act, issuing an incorrect invoice or supplying without an invoice attracts a penalty of ₹10,000 or the amount of tax evaded, whichever is higher. This is not legal advice — consult a GST practitioner for your specific situation.

Need more help? Contact support or email globalcalqulate@gmail.com

We typically reply within 24–48 hours.

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How to Use This Calculator

Enter Item Details

Add product name, quantity, rate, and HSN/SAC code.

Select GST Rate

Choose 0%, 5%, 18%, or 40% based on the product category (GST 2.0 slabs, effective 22 Sept 2025).

Select Sale Type

Intra-state (within same state) uses SGST+CGST. Inter-state uses IGST.

Add GSTIN Details

Enter seller and buyer GSTIN for ITC-compliant invoice.

Generate Invoice

Review the invoice and download the PDF.

Understanding Your Results

Taxable Value
The value of goods/services before GST is applied.
SGST + CGST
Intra-state sales: GST is split equally between state (SGST) and central (CGST) governments.
IGST
Inter-state sales: Full GST goes to the central government (IGST).
ITC (Input Tax Credit)
Tax paid on inputs that can be credited against output tax liability.

Key Tips

✓
Use correct HSN/SAC codes – wrong codes lead to incorrect GST rates and invalid invoices.
✓
Always include GSTIN for B2B sales – buyers need it to claim ITC.
✓
For intra-state sales, use SGST+CGST. For inter-state, use IGST.
✓
ITC can reduce your tax liability – claim all eligible input tax credits.
✓
Keep digital copies of all GST invoices for 6 years (audit requirement).

Understanding GST in India

What is GST?

GST (Goods and Services Tax) is a unified tax that replaced 17 different central and state taxes. It is a consumption tax – ultimately paid by the end consumer, while businesses get ITC (Input Tax Credit) on inputs.

GST Rates in India 2026 (GST 2.0)

The 56th GST Council meeting simplified the rate structure to three main slabs, effective 22 Sept 2025: 0% (Exempt/Nil-rated) for life-saving medicines and basic food; 5% (Merit rate) for most packaged food, clothing, and items previously at 12%; 18% (Standard rate) for most goods and services, including many items that moved down from the old 28% slab; 40% (De-merit rate) for luxury and sin goods (tobacco, pan masala, large cars, aerated drinks). The old 12% and 28% slabs were largely eliminated — items were reallocated to 5%/18% or 18%/40% respectively. A handful of items keep special rates outside this structure (gold, silver, and precious stones at 3%; rough diamonds at 0.25%) — verify the exact HSN-level rate for those on the GST portal.

SGST, CGST, and IGST

Intra-state: GST split 50-50 between state (SGST) and central (CGST). Inter-state: Full GST goes to the central government (IGST).

Input Tax Credit (ITC)

ITC is tax paid on inputs that can be credited against output tax. Claiming ITC reduces your net GST payment to the government.

Sources & References

GST rates reflect the GST 2.0 rate schedule notified following the 56th GST Council meeting, effective 22 September 2025 (see cbic.gov.in). Verify the exact HSN/SAC-level rate for your specific goods or services on the GST portal (gst.gov.in) before invoicing, as rate notifications can change.

Formula & methodology

Formula used

Taxable Value = Quantity × Rate; GST = Taxable Value × Rate%; Total = Taxable Value + GST

Origin: Standard GST computation under the Central Goods and Services Tax Act, 2017, using the GST 2.0 rate slabs effective 22 September 2025.

Variable definitions

Symbol	Meaning	Unit
Taxable Value	Taxable value. Quantity multiplied by the rate per unit, before GST.	currency
Rate%	GST rate. The applicable GST slab for the selected HSN/SAC code — 0%, 5%, 18%, or 40% under GST 2.0.	percent
SGST / CGST	State and Central GST. For intra-state sales, GST is split equally between the state and central government.	currency
IGST	Integrated GST. For inter-state sales, the full GST amount is charged as IGST to the central government.	currency

Limitations

This is a rate calculator, not compliant billing software — it does not validate GSTIN format/status, HSN/SAC code correctness, or e-invoicing/e-way bill requirements.
ITC availability shown here assumes the invoice and buyer meet all statutory conditions; actual ITC eligibility depends on GSTR filings and matching by both parties.

Calculator inputs

Invoice Details

Seller & Buyer Details

Your results

Sources & methodology

Formula & methodology

Formula used

Variable definitions

Limitations

Sources & references

What are the current GST rates in India (GST 2.0)?

What's the difference between SGST/CGST and IGST?

Do I need to register for GST?

Can my customer claim Input Tax Credit (ITC) on my invoice?

What is the penalty for incorrect or missing GST invoices?

Related calculators

More India calculators

Calculator inputs

Invoice Details

Seller & Buyer Details

Your results

Sources & methodology

How to Use This Calculator

GST Invoice Example: Laptop Sale

Understanding Your Results

Key Tips

Understanding GST in India

What is GST?

GST Rates in India 2026 (GST 2.0)

SGST, CGST, and IGST

Input Tax Credit (ITC)

Sources & References

Formula & methodology

Formula used

Variable definitions

Limitations

Sources & references

How to Use This Calculator

GST Invoice Example: Laptop Sale

Understanding Your Results

Key Tips

Understanding GST in India

What is GST?

GST Rates in India 2026 (GST 2.0)

SGST, CGST, and IGST

Input Tax Credit (ITC)

Sources & References