Easily find the original value before GST with GST Calculator Pro’s Reverse GST Calculator. Enter the GST-inclusive price and GST rate to determine the pre-GST amount and tax component.

Reverse GST Calculator

Enter GST-Inclusive Price (₹): Select GST Rate (%):

About This Tool

The Reverse GST Calculator helps you find the original price before GST was added. Simply enter the final GST-inclusive price and select the applicable GST rate (5%, 12%, 18%, or 28%).

It's especially useful for Indian buyers, business owners, and accountants who need to break down the tax from total bills or invoices.

What is Reverse GST Calculation?

Reverse GST calculation, also known as back-calculating GST, is the process of determining the original price (pre-GST or net amount) of a good or service when you only know the final price (which includes GST, also known as the gross amount) and the applicable GST rate. This is a common requirement for accounting, invoicing, and understanding the true cost breakdown of a purchase.

How to Use the Reverse GST Calculator:

Enter GST Inclusive Amount (₹): Input the total amount you paid or received, which already includes the Goods and Services Tax.

Enter GST Rate (%): Specify the applicable GST rate for the product or service (e.g., 5%, 12%, 18%, 28%).

Click ‘Calculate Original Amount’: The calculator will instantly process the information.

View Results: The calculator will display the Original Amount (Excluding GST) and the exact GST Amount that was part of the inclusive price.

The Importance of Reverse GST Calculation

Knowing how to perform a reverse GST calculation is crucial for several reasons:

Accurate Accounting: Businesses need to segregate the GST component from the sales price for proper bookkeeping and GST return filing.
Cost Analysis: Understanding the base cost of goods or services helps in pricing strategies and profitability analysis.
Invoice Verification: Consumers and businesses can verify if the GST charged on an invoice is correct based on the final price.
Input Tax Credit (ITC): For businesses registered under GST, correctly identifying the GST paid on purchases (which can be found using reverse calculation if only the gross amount is known) is essential for claiming ITC.

Practical Use Cases for Reverse GST

A shopkeeper wants to determine the base selling price of an item marked with a GST-inclusive MRP.

An accountant needs to record expenses from receipts that only show the total amount paid.

A consumer wants to understand how much tax they paid on a recent purchase.

A business needs to calculate the taxable value for services rendered when only the total contract value (including GST) is known.

The $GST Calculator Pro Reverse GST Calculator simplifies this process, ensuring accuracy and saving you time in your financial records and analysis.

Reverse GST Formula:

The core formula for reverse GST calculation is straightforward but varies slightly with tax slabs. Let’s break it down:

Formula for 18% GST:

Total Amount = Base Price + (Base Price × 18%)

Base Price = Total Amount ÷ 1.18

Example:
Total Amount = ₹2,360
Base Price = ₹2,360 / 1.18 = ₹2,000
GST = ₹2,360 – ₹2,000 = ₹360

Formula for 28% GST:

Base Price = Total Amount ÷ 1.28

Why Choose GST Calculator Pro?

We provide reliable and intuitive GST and financial tools to help you navigate complex calculations with confidence.

Accurate and up-to-date GST & financial calculations.
User-friendly interface, accessible on all devices.
Comprehensive suite of tools for various financial needs.
Secure and private, no data stored without consent.
Completely free to use for all your calculation needs.

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Revers GST Calculation FAQs

Quick answers to common GST questions.

What is the reverse GST calculation formula?

To reverse calculate GST, divide the total amount (including GST) by (1 + GST rate). For example, if the total is ₹1,180 with 18% GST: Base Price = ₹1,180 / 1.18 = ₹1,000. GST amount = Total – Base Price.

How to reverse calculate GST 18% in Excel?

In Excel, use =Total/(1+0.18). For ₹2,360, enter =2360/1.18 to get ₹2,000 (base price). Subtract this from the total to find GST. Download free templates from GSTCalculatorPro.com.

How to calculate ITC reversal in GST?

ITC reversal occurs when claimed credits are invalid (e.g., unpaid invoices). Calculate reversed ITC as per rules, then apply 18% annual interest using: Interest = (Reversed ITC × Days × 18%) / 365.

What is reverse charge calculation under GST?

Under reverse charge, the recipient pays GST. Calculate it as: GST = Taxable Value × GST Rate. For services from unregistered vendors, use GST reverse charge calculator.

How to use a reverse GST calculator online?

Visit GSTCalculatorPro.com, enter the total amount and GST rate. Instantly get base price and GST breakdown.

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