India’s Smartest GST Calculator & Quotation Tool

Calculate GST instantly using official formulas.
Inclusive/Exclusive • IGST Ready • Estimates & Proforma • No Login

Rate Finder

Don't know the GST Rate?

Search 20,000+ HSN codes to find the correct tax slab (e.g. "Mobile", "Cement").

Print works best on Desktop • Use 'Save as PDF' in Print Dialog

Updated for FY 2025-26

Based on CGST Act

No Login • No Data Stored

How to Create a GST Quotation or Estimate

1.Enter the amount and choose whether GST is Inclusive or Exclusive.
2.Select the correct GST rate (5%, 12%, 18%, 28%) based on the HSN or SAC code.
3.Enable Inter-state (IGST) if the buyer is located in a different state.
4.Click “Add Invoice Details” to include client name and an optional note.
5.Print or save the quotation as a PDF using your browser’s print dialog.

Note: This creates a client-ready GST estimate / proforma. For final tax invoices with GSTIN, serial numbers, and legal compliance, use dedicated accounting software.

Stop Guessing GST. Get Exact Values.

GST calculation shouldn’t feel risky. Built for real Indian businesses, not just textbooks.

Professional Quotes & Share

Create an Estimate, Quotation or Proforma summary in seconds. Add client name + note, then print or share via WhatsApp/Smart Link.

Vendor Bill Auditor

Paid ₹118? We reverse-calculate the base price (₹100) instantly to help you catch wrong bills and save money.

100% Private & Safe

We are not a SaaS. Your financial data never leaves your browser. No login required. It’s safer than Excel.

Upcoming GST Deadlines

Avoid late fees. File your returns on time.

View Full Calendar

GSTR-1

11th / 13th

GSTR-3B

20th / 22nd

Who Should Use This GST Calculator?

Freelancers & Consultants

Calculate 18% GST on Services
Remove GST from client payments
Check TDS deductions (194J)

Retailers & Traders

Product-wise GST calculation
Invoice-ready tax breakdown
Inclusive vs Exclusive pricing

Manufacturers

Input vs Output Tax clarity
Multi-rate calculation
Inverted Duty Refund checks

Accountants & CAs

Quick cross-verification tool
Client-ready accurate numbers
Zero data storage risk

Understand GST Calculations

GST is more than just a percentage. Understanding the math helps you avoid pricing errors.

ExclusiveWhen tax is added OVER price

Use this when you quote a fee (e.g., Service Charges) and need to add tax on top.

GST = Base × (Rate/100)

Total = Base + GST

Real Life Example: Freelancer

You charge ₹50,000 for a logo design.
GST Rate is 18%.
Tax = 50,000 × 0.18 = ₹9,000.
Invoice Total = ₹59,000

InclusiveWhen tax is INSIDE the price

Use this for MRP items or checking vendor bills. Never treat MRP as your profit.

Base = Total / (1 + Rate/100)

GST = Total - Base

Real Life Example: Shopkeeper

You sell a phone for ₹11,800 (MRP).
Rate is 18%. Divide Total by 1.18.
Real Earning = 11,800 / 1.18 = ₹10,000.
Tax to Pay = ₹1,800

Avoid Compliance Errors

Find the Correct GST Rate Using HSN Codes

Choosing the wrong GST rate is a costly mistake. Our HSN Search helps you avoid confusion between similar items.

Search 22,000+ HSN Codes
Official Rates from CBIC Notifications
Updated for FY 2025-26

Search HSN Directory

Advanced GST Tools for Indian Businesses

Built to support compliance — not just calculation.

TDS Estimator

Estimate TDS (194J/194C) deductions and understand your net receivable amount.

RCM Calculator

Calculate Reverse Charge Liability for GTA & Legal Services automatically.

Inverted Duty Refund

Buying at 18%, Selling at 5%? Calculate your eligible refund amount instantly.

Rate Cards

Generate a professional, printable GST Rate List for your shop or office.

Why Thousands Trust This GST Calculator

Uses official GST formulas

Rates updated as per latest notifications

Designed for Indian GST law

No ads inside calculation flow

No login, no data storage

Works instantly on all devices

This tool is built to assist compliance, not replace professional advice.

Common GST Questions

Answers to the most frequent doubts about GST calculation.

Can I create a quotation / proforma invoice with this?

Yes. You can generate a client-ready Estimate/Quotation summary, add a client name/note, and print it (or save as PDF from your browser). For a final GST tax invoice with full legal fields (GSTIN series, place of supply, etc.), use your accounting software.

Is GST calculated on the selling price or invoice value?

GST is calculated on the transaction value (taxable value) mentioned in the invoice. If GST is shown separately, it is added to the base price (Exclusive). If the price is 'All Inclusive', the tax must be back-calculated (Reverse GST).

What’s the difference between inclusive GST and exclusive GST?

Exclusive GST means tax is calculated on top of the goods/service value (e.g., ₹100 + ₹18 Tax = ₹118). Inclusive GST means the tax is already inside the final price (e.g., MRP ₹118 includes ₹18 Tax).

Does this calculator split GST into CGST and SGST automatically?

Yes. For Intra-State transactions, it splits tax into 50% CGST + 50% SGST. For Inter-State transactions (IGST), simply toggle the 'Inter-state' option to see the full integrated tax amount.

Which GST rate should I apply — 5%, 12%, 18% or 28%?

Never guess the rate. The rate depends entirely on the HSN (Goods) or SAC (Services) code. Use our 'HSN Search' feature to find the official government-notified rate.

Is GST applicable to freelancers and consultants?

Yes, once your annual turnover exceeds ₹20 Lakh (₹10 Lakh in special category states). Most freelance services (Design, Dev, Marketing) fall under 18% GST (SAC 9983).

GST State Code List

Find the First 2 Digits of any GSTIN. Used for validation.

TheGSTCalculator.in is built to simplify GST calculations for Indian businesses, freelancers, and professionals — fast, accurate, and compliance-aware.

Data Source: Central Board of Indirect Taxes (CBIC)