GST Calculator
Calculate GST exclusive and inclusive amounts instantly
Calculate GST
Calculation Results
Enter an amount and GST rate to see the calculation results
About GST Rates in India
GST Exclusive vs Inclusive:
- • Exclusive: GST is added to the base price
- • Inclusive: GST is already included in the total price
Common GST Rates:
- • 0%: Essential goods (rice, wheat, milk)
- • 5%: Basic necessities (sugar, tea, coffee)
- • 12%: Processed foods, medicines
- • 18%: Most goods and services
- • 28%: Luxury items, automobiles
Enter Amount
Type the amount you want to work with, either before or after GST.
Pick Rate & Type
Choose a GST slab and whether the amount is GST exclusive or inclusive.
Get the Breakdown
See the base amount, the GST and the final total calculated instantly.
Use Cases of GST Calculator
Discover how quick GST calculations help business owners, freelancers, accountants and shoppers stay accurate with every amount.
Creating Invoices
Work out the exact tax line before you raise a bill. Enter your service charge, pick the slab and copy the GST and total straight onto the invoice.
Retail & Shop Pricing
Decide shelf prices that already include tax, then check how much of each sale is actually yours. Useful whenever you quote a single round figure to customers.
Checking Supplier Bills
Verify that the GST on a purchase bill has been calculated correctly before you pay it. Reverse a total in seconds to see the base amount and tax hidden inside.
Freelancers & Contractors
Quote clients with confidence by showing your fee and the tax separately. Avoid the awkward correction that comes from quoting a price you forgot to add GST to.
Quotations & Estimates
Build accurate proposals where the client can see the net amount, the tax and the final payable figure clearly laid out before they approve the work.
Personal Budgeting
Understand how much tax you are actually paying on a purchase, and compare the real cost of two options when one price includes GST and the other does not.
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About GST Calculator:
The GST Calculator by DESIGNMAZA works out Goods and Services Tax in a single step, whether you need to add GST to a price or pull it back out of one. Enter your amount, choose the slab that applies and the calculator shows the base amount, the tax and the final total straight away. It is built for the Indian GST system and covers every standard rate, which makes it useful for quoting a job, checking an invoice or working out what a supplier actually charged you.
What is GST Calculator?
GST Calculator is a free online tool that handles both directions of a GST calculation. In GST exclusive mode it takes a price before tax and adds the tax on top, which is what you need when preparing a quotation or an invoice. In GST inclusive mode it takes a final price that already contains tax and works backwards to reveal the base amount and the tax hidden inside it, which is what you need when reading a bill or reconciling accounts. Both run instantly as you type, with no formulas to remember.
Benefits of using GST Calculator
The GST Calculator removes the guesswork from everyday tax arithmetic. Here are some of its benefits:
- Works both ways: Add GST to a net price or remove it from a gross price with one switch.
- All standard slabs: Covers the 0%, 5%, 12%, 18% and 28% rates used across Indian goods and services.
- Clear breakdown: See the base amount, the GST and the total separately instead of just one number.
- Instant results: Figures update the moment you change the amount, rate or calculation type.
- No formulas needed: Skip the reverse calculation maths that inclusive pricing normally requires.
- Free and private: Everything is calculated in your browser, so no amount you enter is sent anywhere.