How do I subtract GST from a total?

Asked by: Ray Shields  |  Last update: June 3, 2026
Score: 4.3/5 (30 votes)

To subtract a 10% GST from a total price, divide the total by 1.1 1 . 1 to find the GST-exclusive price (e.g., $ 110 ÷ 1.1 = $ 100 $ 1 1 0 ÷ 1 . 1 = $ 1 0 0 ). To find the specific GST amount, divide the total by 11 1 1 (e.g., $ 110 ÷ 11 = $ 10 $ 1 1 0 ÷ 1 1 = $ 1 0 ). For other tax rates, divide the total by ( 1 + rate as a decimal ) ( 1 + r a t e a s a d e c i m a l ) .

How to subtract GST from total amount?

Example

  1. GST Amount = ₹1,180 - (₹1,180 / (1 + (18/100))) = ₹180.
  2. Amount Excluding GST = ₹1,180 - ₹180 = ₹1,000.

How to calculate sales tax backwards from total?

To calculate sales tax backwards from a total, divide the total price by (1 + the tax rate as a decimal) to get the pre-tax price, then subtract that pre-tax price from the total to find the actual tax amount. For example, for a $108 total with 8% tax, you'd calculate $108 / 1.08 = $100 (pre-tax), and then $108 - $100 = $8 (tax).
 

How to break out GST from total?

The GST is the difference between this and the aftertax total: $63 - $60 = $3. You can see that to find the total before GST all you need to do is divide by 1.05. Do that for $1700 and you have your subtotal. Then subtract that from $1700 to get the amount of GST you paid.

How do I remove GST from a total?

Subtracting GST:

  1. To calculate how much GST is included in a price, just divide by 11.
  2. To calculate how much the price was before GST, just divide by 1.1.

GST Workshop 2026: Complete Guide for Ecommerce Beginners (Amazon, Flipkart, Meesho, Shopify)

23 related questions found

What's the calculation to remove GST?

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.

How does a reverse GST calculator work?

The Reverse GST Calculator functions by utilizing a specific formula to determine the GST-exclusive price. It takes into account user inputs, such as the post-cost price and the prevailing goods and services tax rate.

What is a reverse charge of GST?

Reverse Charge means the liability to pay tax is on the recipient of supply of goods or services instead of the supplier of such goods or services in respect of notified categories of supply.

How do you calculate $18 GST from a total?

The different slabs for GST are 5%, 12%, 18% and 28%. GST calculation can be explained by a simple illustration : If a goods or services is sold at Rs. 1,000 and the GST rate applicable is 18%, then the net price calculated will be = 1,000+ (1,000X(18/100)) = 1,000+180 = Rs. 1,180.

How to figure out hst backwards?

Reverse Sales Tax Calculations:

  1. Price before Tax = Total Price with Tax - Sales Tax.
  2. Sales Tax Rate = Sales Tax Percent / 100.
  3. Price before Tax = Total Price with Tax / (1 + Sales Tax Rate)
  4. Sales Tax = Price before Tax x Sales Tax Rate.

What is the formula for reverse GST calculation in Excel?

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.

Is GST 5% or 7%?

The Canadian Goods and Services Tax (GST) is a federal tax set at 5%, but the total sales tax you pay (5% GST + Provincial Sales Tax/PST) can be higher, like 7% (PST) in BC/Manitoba, or combined into a Harmonized Sales Tax (HST) that varies by province, such as 13% in Ontario or 15% in Atlantic provinces. So, GST is always 5%, but the combined rate depends on the province.

How to backwards calculate GST?

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.

Is there a simple formula for GST calculation?

The formula for calculating GST is to multiply the net price (exclusive of GST) by 1.1 or divide the price including GST by 11 to determine the GST component.

How to minus GST from total?

Firstly, divide the GST-inclusive price by (1 + (GST rate/100)) to determine the base price. Lastly, subtract this value from the total price. Can I use a Reverse GST Calculator for all types of GST (CGST, SGST, IGST)? Yes, you can use the reverse GST calculator for all GST types—CGST, SGST, and IGST.

How to calculate GST from full amount?

GST is a broad-based tax of 10% on most goods, services and other items sold or consumed in Australia. To work out the cost of an item including GST, multiply the amount exclusive of GST by 1.1. To work out the GST component, divide the GST inclusive cost by 11.

Why do we divide by 11 to get GST?

GST (Goods and Services Tax) is a 10% tax applied to most goods and services sold in Australia. Think of it as the government's slice of the pie—exactly one-eleventh (1/11th) of the total price including GST.

Who is responsible for paying GST under reverse charge?

In reverse charge, the recipient is liable to pay GST. Thus, time of supply for supplies under reverse charge is different from the supplies which are under forward charge.

What is GST reversal with an example?

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.

How do you calculate reverse tax?

Formula Behind Financial Sales Tax Reverse Calculator

The formula is: Base Price = Total Price / (1 + (Tax Rate ÷ 100)). Total Price is the tax-inclusive amount; Tax Rate is the applicable percentage. This calculation instantly gives you both the pre-tax price and the actual tax paid.

How do I remove tax from a total?

Answer: Reverse sales ' is the process of determining the pre-' amount from a total price that includes sales '. It is calculated by dividing the total amount by (1 + sales ' rate). For example, if the total amount is $107.50 and the sales ' rate is 7.5%, the pre-' amount is calculated as $107.50 / 1.075 ≈ $100.

What is the formula for calculating GST in Excel?

Excel for GST Calculation

Calculating GST in Excel can be straightforward. Here's a basic approach: Base Price = “GST-inclusive price” * 100 / (100 + GST rate) GST Amount = MRP - Base Price.