How do I calculate 18% GST?

Asked by: Dario Grant  |  Last update: July 9, 2026
Score: 4.8/5 (19 votes)

To calculate 18% GST, multiply the base price by 0.18 0 . 1 8 to find the tax amount, then add it to the base price for the total. For example, on a ₹1,000 item: GST is ₹180 ( 1000 × 0.18 1 0 0 0 × 0 . 1 8 ), and the total price is ₹1,180. To remove 18% GST from an inclusive price, divide the total by 1.18 1 . 1 8 to get the base price.

How do you calculate GST 18%?

For adding GST, the following formula is used. For example, if a product or service costs Rs. 100 and the GST levied on that is 18%, the GST amount will be 100 x 18% = Rs. 18. The net amount you'd have to pay would be Rs. 118.

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 calculate GST reverse?

Reverse Charge Mechanism & Calculation

  1. Formula: Base Amount = Inclusive Amount ÷ (1 + GST Rate/100)
  2. RCM: Recipient pays GST instead of supplier.
  3. Split: For intra-state: CGST + SGST | For inter-state: IGST. Our reverse GST calculator automatically handles RCM compliance calculations.

What is the GST factor of 18%?

18% GST on ₹2,000 is ₹360. So, ₹2,000 includes ₹305.08 as GST. Yes, a GST calculator app helps you instantly calculate CGST, SGST, IGST, and total amounts without manual formulas.

How to Calculate GST in Microsoft Excel | GST Calculator in Excel

44 related questions found

What is the 18 percent GST of $50,000?

Calculation: Base Price: ₹50,000. GST Amount: ₹50,000 × 18% = ₹9,000. Total Amount: ₹50,000 + ₹9,000 = ₹59,000.

How do you calculate GST?

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.

How do you calculate GST online?

If a product 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.

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 a GST calculator free to use?

With the free GST calculator, you can calculate the tax amount in three simple steps. The tool provides you with three fields that have to be filled, and it calculates GST automatically based on what you fill in. Enter the price of the goods or services in the Amount field.

How to calculate GST using Quick Method?

To calculate the amount of GST/HST to remit, multiply the revenue from your supplies (including the GST/HST) for the reporting period by the quick method remittance rate, or rates, that apply to your situation.

How do you calculate GST from a total?

If you have a GST-inclusive sales price and wish to calculate the 15% GST component of the total price, you can either divide it by 1.15 or follow this formula: Multiply the total sales price by 3. Divide the result by 23.

How do they calculate GST?

Assuming $50.00 as the expense, multiply by 0.05 and divide by 1.05 to determine the GST, which is $2.38. (GST = $50/105 X . 05.) When invoicing for a service that is GST applicable, Accounting will include the GST in the total amount to be billed.

What falls under 18% GST?

This includes many items that were previously taxed at a higher rate, such as mobile phones, air conditioners, refrigerators, televisions, and small cars. Other items that have moved to the 18% slab include consumer durables, small motorcycles, and most electronic components.

How to calculate 18% GST formula?

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.

What is the formula to calculate GST in Excel?

Apply the GST Formula Use a formula like = B2 - B2 / 1.15 for a 15% tax rate to calculate the GST amount. Adjust as needed for different tax rates. (This approach works similarly for other tax rates—just replace 1.15 with 1 + (GST Rate/100). For example, if the GST rate is 18%, use 1.18 instead.)

What is the formula for calculating total GST?

GST Amount = (Selling Price x GST Rate) / 100. Here, the Selling Price is determined by adding the Cost Price and Profit Amount. The calculator factors in the Selling Price, representing the total value of goods or services subject to GST, and the GST rate, which fluctuates based on the nature of the goods or services.

What is the GST calculator?

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.

How to claim 18% GST?

  1. Login and Navigate to ITC-01 page. Access the www.gst.gov.in URL. ...
  2. Declaration for claim of input tax credit under sub-section (1) of section 18. Select the appropriate section from the Claim made under drop-down list. ...
  3. Preview GST ITC-01. ...
  4. Submit GST ITC-01 to freeze data. ...
  5. File GST ITC-01 with DSC/ EVC.

How to calculate GST in reverse?

So, if the final price of a good is ₹1000 and GST is charged at 18%, then the base price before GST will be: ₹1000 / (1 + 0.18) = ₹1000 / 1.18 = ₹847.46 (round off) and the total GST charged is ₹152.54.

How much GST do you pay on $1000?

Subtracting GST from Price

To calculate how much GST was included in the price, divide the total price by 11 ($1000∕11=$90.91). To calculate the price without GST, divide the price by 1.1 ($1000∕1.1=$909.09).

How to calculate GST from a total amount?

GST Calculation Formula

  1. GST Amount = (Tax Rate/100) x Amount Excluding GST.
  2. Total Amount (including GST) = Amount Excluding GST + GST Amount.

How do I figure out my GST?

The normal method for GST is subtracting the amount you paid on purchases (aka ITCs) from what you collected on your sales. This is the amount you must remit to CRA or if you paid more GST on your purchases than you collected on sales, CRA will send you a refund.