GST Calculator

What is the GST calculator?

India's GST system taxes goods and services at four main rates: 5%, 12%, 18%, and 28%. The GST calculator helps you quickly figure out how much tax is included in a price, or how much GST gets added on top of a base amount. Freelancers sending invoices, small business owners, shop owners, and even customers wanting to understand a bill can use this GST Calculator regularly. CalciHub's GST calculator lets you work in two ways: add GST to get the final price, or strip GST out of a total to find the original amount.

How Does the GST Calculator Work?

The math behind this GST Calculator is simple. Adding GST multiplies the base price by the tax rate. Removing GST which is a reverse calculation divides the total price by the tax factor.

Adding GST: Final Price = Base Price × (1 + GST% / 100)

Removing GST: Base Price = Final Price / (1 + GST% / 100)

Base Price = Price before GST

GST% = The applicable tax rate (5, 12, 18, or 28)

Final Price = Price the buyer pays including GST

How to Use CalciHub's GST Calculator

1. Choose whether you're adding GST to a base price or removing GST from a total.

2. Enter the amount in ₹.

3. Select the GST rate — 5%, 12%, 18%, or 28%.

4. Hit Calculate to get the GST amount and the final or base price.

Tip: If you're a freelancer raising invoices for software services using Calcihub’s GST Calculator, the GST rate is 18%. Always check the applicable rate for your service category on the GST Council's official rate list.

A Quick Example

Anjali runs a graphic design studio in Mumbai and raises an invoice for ₹50,000 worth of design services. She needs to add 18% GST.

Service amount (base): ₹50,000

GST rate: 18%

GST amount: ₹9,000

Total invoice amount: ₹59,000

Anjali collects ₹59,000 from the client and deposits ₹9,000 with the government, the GST Calculator makes this two-second math instead of a potential billing error.

Frequently Asked Questions