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Usually the tax is added to the original price, so you can write an equation such as (assuming a 5% tax):

p2 = p1 + 0.05 p1

(where p1 is the price before the tax, and p2 is the price after the tax). This can be simplified (applying basic algebra) to:

p2 = 1.05 p1

Solving for the original price:

p1 = p2 / 1.05

In other words: divide the price after tax by 1.05. If the tax is any other percentage, adjust the factor; for example, for a 7% tax divide by 1.07, for an 8.5% tax divide by 1.085, etc. Note that the factor by which you divide is simply 1 + (tax rate) / 100.

Q: How do you calculate a price before tax?

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The easiest way to understand the answer is to turn it around. If you wanted to calculate the item price plus tax, you would multiply the item price by 1.073. So, to back up to the item price from the item price plus tax, divide the item price plus tax by 1.073. $20.00 / 1.073 = item price before sales tax.

Take your order price times .007. That's the sales tax for that order. but take tax before shipping cost.

The discount must be calculated first to get the base price of the item, then the tax percentage would be taken into consideration, otherwise you would be charging additional tax on an item which should be discounted in the first place. If you were to calculate tax first then the discount price, your total would be incorrect.

If the tax is 10 percent and the price of the item is $1.00 then you simply calculate 10% of 1.0. = 10 cents and add it to the original price.You would charge the person $1.10 (including tax).The simple way to calculate the final price mathematically is to express the percent as a decimal and add 1 to it. Then multiply the price by this number.I.e If the tax is 5.6% you would express this a 0.056 + 1 = 1.056 and multiple the pre tax price by this number.

The total tax is $2.83 and the price before tax was $47.17.

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The easiest way to understand the answer is to turn it around. If you wanted to calculate the item price plus tax, you would multiply the item price by 1.073. So, to back up to the item price from the item price plus tax, divide the item price plus tax by 1.073. $20.00 / 1.073 = item price before sales tax.

Usually prices are straight forward in locations with no tax. After knowing the price you then calculate the tax. However, if you know the price of the item after tax you can simply subtract the percentage of sales tax. Example: The final price of a sticker cost $2.06. The sales tax is 7%. $2.06 - 0.07 = $1.99 The original price of the sticker was $1.99 *FYI to convert percent to decimal start at the percent sign then move two decimal places to the left <<<<<.

When purchasing a car, it is wise to calculate the tax before you decide on a price you can afford.

If the question is how to calculate a price before V.A.T. then for example if tax is 20% and price including tax is 8.40 then divide by 1.2 So 8.40 / 1.2 = 7.00 Or if tax is 15% then divide by 1.15 and so on ...

Take your order price times .007. That's the sales tax for that order. but take tax before shipping cost.

The price of things is used to calculate the amount of tax. Then the tax is added to the price for a total of what you pay.

If the tax is 10 percent and the price of the item is $1.00 then you simply calculate 10% of 1.0. = 10 cents and add it to the original price.You would charge the person $1.10 (including tax).The simple way to calculate the final price mathematically is to express the percent as a decimal and add 1 to it. Then multiply the price by this number.I.e If the tax is 5.6% you would express this a 0.056 + 1 = 1.056 and multiple the pre tax price by this number.

The discount must be calculated first to get the base price of the item, then the tax percentage would be taken into consideration, otherwise you would be charging additional tax on an item which should be discounted in the first place. If you were to calculate tax first then the discount price, your total would be incorrect.

The total tax is $4.95 and the price before tax was $38.04.

Multiply the price by 1 plus the decimal equivalent of the tax. If the tax is 8%, multiply the price by 1.08

The total tax is $2.83 and the price before tax was $47.17.

multiply the before-tax price by 1+the tax/100 (assuming the tax is in percent)if the price is 50, and the tax on the sale is 10%after tax price: 50 x 1.1 = 55