Reverse GST is calculated to find the original price before tax from a GST-inclusive amount. Use the formula: Base Price = Gross Amount / (1 + GST Rate/100). For example, on a ₹1,180 item at 18% GST: ₹1,180 / 1.18 = ₹1,000 base price, with a GST amount of ₹180.
Determine the Divisor: Convert the GST rate into decimal form and add 1. Example: For 18%, the divisor is 1 + 0.18 = 1.18. Calculate the Base (GST Exclusive) Amount: Divide the gross amount by the divisor Base Amount = Gross Amount ÷ (1 + GST Rate/100)
Subtracting GST:
To calculate how much GST is included in a price, just divide by 11. To calculate how much the price was before GST, just divide by 1.1. That's a lot of manual work for small-business owners to do every time they want o calculate GST—use our calculator instead.
Example
Calculating reverse GST is important because it allows you to determine the GST-exclusive price from a GST-inclusive amount and arrive at an accurate tax amount.
How do you remove GST? The equation to subtract GST is slightly more complicated: First, take the GST-inclusive price and multiply that by 3. Then, divide the result by 23 and round that number to the nearest two decimal points.
Reverse Sales Tax Calculations:
Example of reverse charge mechanism under GST
Suppose a GST-registered dealer buys goods worth INR 10,000 from an unregistered supplier. In this case, the dealer has to raise a self-invoice and pay INR 1,200 as GST (calculated at 12% of INR 10,000) under the reverse charge mechanism.
The reversal is calculated using the following formula. Example: If the buyer claimed ₹50,000 as ITC on a purchase, and the supplier failed to pay GST for 2 months out of 12 months, the ITC reversal would be calculated proportionately. As a result, the buyer must reverse ₹8,333 of the claimed ITC.
Using Excel to Reverse Calculate GST
Here's how to do it: Use the Formula: To reverse calculate GST, the formula is =Total Price / (1 + GST rate). For example, if the total price is ₹118 with an 18% GST, the person would type =118 / 1.18' in Excel to find the original price of ₹100.
You can quickly work out the cost of a product excluding GST by dividing the price of the product including GST by 11. This will give you the amount of GST applied to the product. You then multiply that figure by 10 to calculate the value of the product excluding GST.
Reverse Charge Rules for Business-to-Business (B2B) Transactions. When intangible services are supplied by a foreign provider to an Australian business (rather than a consumer), GST may not be charged by the overseas supplier. Instead, the reverse charge mechanism applies.
Example of Reverse GST Calculation
2. How is RCM calculated? RCM is calculated based on the applicable GST rates using the formula: (Value of Goods/Services) x (Applicable GST Rate). You can also make use of the GST calculator online to get the GST rate of the product or services.
RCM stands for Reverse Charge Mechanism. It is a rule in the GST (Goods and Services Tax) system where the buyer, not the seller, pays the tax to the government. Usually, sellers collect tax and give it to the government, but under RCM, this process is reversed.
Reverse Charge Mechanism under GST is a mechanism under which the usual cycle of tax payment is reversed. Under Reverse Charge, the recipient pays to the supplier an amount exclusive of GST, the recipient then pays the GST directly to the Government. RCM is a complex concept that works in select scenarios only.
Subtracting VAT from a Price
Net price = Original cost – GST
For example, if the cost of a product after GST of 18% is Rs. 118, its original cost is 118 – [100/(100 + 18%)}], which equates to Rs. 100.
Subtracting GST:
Excel Formula to Remove the GST amount from a Total
If you have a GST-inclusive total and need to calculate the GST-exclusive amount (i.e., remove GST), divide the Total figure by 1.15.