To remove GST from a total price, divide the GST-inclusive amount by 1 + ( GST rate ÷ 100 ) 1 + ( G S T r a t e ÷ 1 0 0 ) . The formula for the base (original) price is: Base Price = GST Inclusive Price 1 + ( GST Rate / 100 ) B a s e P r i c e = G S T I n c l u s i v e P r i c e 1 + ( G S T R a t e / 1 0 0 ) . To find the GST amount, subtract the base price from the total price, or multiply the total by GST Rate 100 + GST Rate G S T R a t e 1 0 0 + G S T R a t e .
Example
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.
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.
GST Amount = (Selling Price x GST Rate) / 100. Here, the Selling Price is determined by adding the Cost Price and Profit Amount.
If you only have G.S.T, which is 7%, then you would calculate the price after taxes by multiplying by 1.07. So a $200 item would cost 1.07 x $200 = $214 after G.S.T. To calculate how much G.S.T. was paid on a $214 item, simply reverse the calculation by dividing by 1.07, as $214/1.07=$200.
All you have to do is multiply the total taxable value of your business-related purchases with the GST rate.
Reverse GST Calculator is a mathematical-based financial tool that determines the bill amount of goods and services, excluding tax. This tool helps in figuring out the pre-tax cost on the basis of the GST-inclusive amount and an applicable GST slab rate.
To work out the cost including GST, you multiply the amount exclusive of GST by 1.1. You divide a GST inclusive cost by 11 to work out the GST component. A taxable sale must be: for payment of some kind.
If you need to take GST off a total price, use the formula = Price / (1 + GST rate). For example, if the total price is ₹118, you'd type = 118 / 1.18 to find the original price before GST.
Removing GST with Constant Rate from the Total Amount
The price with GST includes both the price and the GST. If the GST rate is 10%, the price we have now is 110% of the original price. That is why we need to divide the price with GST in D2 cell by 110, and then multiply the result by 100 to get the price without GST.
For example, if the GST-inclusive price is $110, dividing by 1.1 would give a GST-exclusive price of $100. Accurate subtraction of GST from a price ensures businesses report the correct GST amounts on their tax invoices and Business Activity Statements (BAS).
Understanding GST Rate Reduction
Starting September 22, 2025, the GST Council reduced the number of tax slabs from four to two main rates: 5% merit rate for essential and priority items and 18% standard rate for most other goods and services. There is also a special 40% rate for luxury and sin goods.
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.
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.
A GST calculator is a tool that helps in calculating the Goods and Services Tax (GST) for various products and services. The GST is a consumption tax levied on the value added to goods and services at each stage of production and distribution.
Beginner's Guide to GST
So the pre-tax subtotal was $60. 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.
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.
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.
Reverse GST Calculation Example
✔ If monthly taxable turnover > ₹50 lakh (excluding exempt and zero-rated supplies), ✔ Minimum 1% of GST liability must be paid in cash, ✔ The remaining 99% may be paid through ITC. Applicable to registered persons under GST whose monthly taxable supply exceeds ₹50 lakh.
Reversal of ITC means the credit of inputs utilised earlier would now be added to the output tax liability, effectively nullifying the credit claimed earlier. Depending upon when such reversal is done, payment of interest may also be required.