GST Calculator
Calculate your Goods and Services Tax with ease.India’s No.1 GST Billing &
Accounting Software
check_circleLightning-Fast Billing with Barcode scanning
check_circleAuto E-Way Bill & E-Invoicing
check_circleMobile App
check_circleComplete Accounting
check_circleAdvanced Inventory Management
check_circleAuto Payment Reminders
check_circle1-Click GST Filing & Reconciliation
check_circle24*7 support
BUSY GST Calculator for Instant Tax Estimation
Calculating GST accurately is crucial for every business owner, freelancer, and tax consultant in India. Whether you’re preparing invoices, managing accounts, or complying with tax regulations, accuracy is non-negotiable. That’s where BUSY’s GST Calculator comes in. It helps compute GST accurately and instantly, based on the taxable amount, saving time, avoiding manual errors, and ensuring compliance with Indian tax laws.
This free GST calculator automatically calculates CGST, SGST, or IGST based on your input values, making GST computation simple. Whether you're on a desktop or mobile device, it’s designed to work seamlessly across devices and provide a smooth user experience for both professionals and beginners.
Explore All BUSY Calculators for Easy GST Compliance
What is a GST Calculator?
A GST calculator is a free online tool designed to compute the Goods and Services Tax on the total value of goods and services. Under the Indian GST regime, multiple types of GST apply based on the nature and location of the transaction. Manually computing these tax splits can lead to errors, particularly when handling bulk billing or large invoices.
BUSY’s GST Calculator automates this entire process. You simply input your taxable amount, select the applicable tax rate, and choose whether the amount is inclusive or exclusive of GST. The tool then instantly calculates how much CGST, SGST, or IGST applies, depending on whether the transaction is intra-state or inter-state. It’s especially useful for GST-registered businesses, freelance professionals, consultants, shopkeepers, and service providers.
By eliminating guesswork and manual math, this calculator ensures you always charge or pay the correct GST amount. It’s also ideal for validating GST amounts on received invoices or before filing returns.
How to Use BUSY’s GST Calculator?
BUSY's GST Calculator is designed to be simple and intuitive, no matter your experience level. Here’s a step-by-step guide on how to use it effectively:
- Enter Taxable Value: Start by typing in the base amount on which GST needs to be applied (e.g., ₹10,000).
- Choose GST Rate: Select the applicable GST rate from the available slabs—5%, 12%, 18%, or 28%.
- Select Tax Type: Indicate whether your amount is GST-inclusive or GST-exclusive. This ensures accurate tax split and gross value calculation.
- Click Calculate: Hit the ‘Calculate’ button to get an instant breakdown of CGST, SGST (for intra-state), or IGST (for inter-state transactions).
- View Results: The tool will show:
- GST Amount
- Tax splits (CGST/SGST or IGST)
- Total Invoice Amount (if exclusive)
- Pre-tax Amount (if inclusive)
The tool works flawlessly on both mobile and desktop devices. Whether you're on-the-go or sitting at your office desk, you can quickly estimate GST and streamline your billing process.
GST Calculation Example with Step-by-Step Breakdown
Let’s take a practical example to understand how the GST Calculator works.
Scenario:
- Taxable amount = ₹10,000
- GST rate = 18%
- Transaction type = Intra-state (within the same state)
Step-by-step Calculation:
- GST = 18% of ₹10,000 = ₹1,800
- CGST (9%) = ₹900
- SGST (9%) = ₹900
- Total Invoice Amount = ₹10,000 + ₹1,800 = ₹11,800
Now, for an inter-state transaction:
- IGST (18%) = ₹1,800
- Total Invoice Amount = ₹11,800
If the amount entered is inclusive of GST:
- Reverse calculation formula applies:
GST = (Original Amount × GST Rate) / (100 + GST Rate)
Example:
- Inclusive Price = ₹11,800
- GST Rate = 18%
- GST = ₹11,800 × 18 / 118 = ₹1,800
- Base Value = ₹11,800 – ₹1,800 = ₹10,000
- This example makes it clear how GST is calculated in real-world scenarios and how easily BUSY’s tool simplifies it.
Current GST Rates in India
Understanding current GST slabs is essential for accurate tax estimation. Here’s a list of GST rates in India along with example items under each category:
- 0% GST: Unbranded grains, fresh fruits, vegetables, milk
- 5% GST: Essential goods and services like railways, household necessities, unbranded packaged food, restaurant food (non-AC)
- 12% GST: Packaged food items, business class air tickets, frozen vegetables, fruit juices, insurance
- 18% GST: Mobile phones, AC restaurants, software services, financial services, and IT services
- 28% GST: Luxury goods, automobiles, tobacco, pan masala, air conditioners, cement
The government frequently revises GST rates through council meetings, so staying updated is crucial for businesses.
Explore Relevant Guides
To understand GST better and stay compliant, here are some helpful guides from BUSY:
- How to Make GST Payment Online
- GST Rates on Hotel Room Booking
These guides provide detailed breakdowns and tips to help you manage GST payments, rates, and compliance more efficiently.
Different Types of GST in India
India’s GST structure comprises four key types of taxes:
- CGST (Central GST): Collected by the central government for intra-state transactions.
- SGST (State GST): Collected by the state government for intra-state transactions.
- IGST (Integrated GST): Collected by the central government for inter-state transactions between two states.
- UTGST (Union Territory GST): Applied in Union Territories without their own legislatures (e.g., Chandigarh, Daman & Diu).
When to apply what?
- If you're selling goods/services within the same state, CGST and SGST apply.
- If you're selling across state lines, IGST applies.
This clarity helps businesses ensure the correct tax is charged on every invoice.
Popular Invoice Formats You Might Need
Frequently Asked Questions
-
What does the BUSY GST Calculator do?
The BUSY GST Calculator gives you the GST amount on a transaction and also shows you the breakup of CGST and SGST for same state sales or IGST for inter state sales. It also shows the final invoice value so you know what to charge or what you will pay.
-
How do I calculate GST using this tool?
You just enter the taxable amount, choose the GST rate, and select if the price is inclusive or exclusive of GST. The calculator instantly shows the GST amount and the tax split.
-
Can I check inclusive GST price with this calculator?
Yes. If you already have a final price that includes GST, the calculator can reverse calculate and tell you the base value before GST and how much of that price is tax.
-
Who should use the BUSY GST Calculator?
It is built for MSME owners, accountants, freelancers, shopkeepers, and service providers who raise GST bills or verify supplier invoices.
-
Does the calculator tell me which tax to apply: CGST, SGST, or IGST?
Yes. When you choose intra-state it shows CGST and SGST. When you choose inter-state it shows IGST. This helps you avoid a wrong tax split on the invoice.
-
Is this calculator valid for all GST slabs in India?
The calculator supports common GST slabs like 5 percent, 18 percent, and 40 percent, and applies the correct math on your entered amount.
-
Do I need to sign up to use the BUSY GST Calculator?
No. The calculator is free to use and works on mobile and desktop without login.
-
Can I use the GST Calculator to cross-check a vendor invoice before I claim ITC?
Yes. You can enter the taxable value and GST rate from the invoice and confirm if the GST amount and breakup are correct before you book the purchase in BUSY and claim Input Tax Credit.
-
How does this help with GST filing in BUSY?
if you are using BUSY Accounting Software, you can raise invoices with the correct GST split from the start. That means fewer corrections later while generating GSTR 1 and GSTR 3B from BUSY.
-
Can I share the result with my client or buyer?
Yes. After calculation you can note the GST amount and final invoice value and use those numbers directly in your quotation, proforma invoice, or sales invoice generated in BUSY Billing.