can anyone help please, i need a simple formula for working out taxes.if i had any number i need to know what the base was before 16% tax was added.

i know the formula if the tax was 17.5%,what ever the total is if you divide that by 47 then x that by 7 that will give you the base before tax was added.
example 50 divide 47 x 7 = 7.44

this gives me the total tax i paid if the rate was 17.5% , i need to know a similar formula if the tax is 16%,thanks.

why bother with a "formula"?

If you have the total after 17.5% tax was added, that total must represent 117.5% of the original.
So if you divide your total by 1.175, which is 117.5%, you get the original.
Now multiply that by .175 and you have the amount of the tax.

so $50÷1.175x.175 = $7.45

(notice 1.175/.175 = 1175/175 = 47/7 )

if you had 16% your calculation would be

$50÷1.16 x .16 = .....

.16/1.16 = 4/29

So your formula would be "divide by 29 then multiply by 4"

for 12% it would be .12/1.12 = 3/28

etc.

Personally, I would never use such a "formula", just do the math by reasoning it out.

To calculate the base before 16% tax was added, you can follow these steps:

1. Take the total amount after tax is added.
2. Divide the total amount by 1.16 (100% + 16% tax) to find the original base.
3. Multiply the original base by 0.16 to find the amount of tax paid.

For example, let's say you have a total amount of $50 after 16% tax was added.

Step 1: Divide $50 by 1.16:

$50 ÷ 1.16 = $43.10

So, the original base before tax was added is $43.10.

Step 2: Multiply $43.10 by 0.16:

$43.10 x 0.16 = $6.90

Therefore, $6.90 is the amount of tax paid.

So, by dividing the total by 1.16 and then multiplying it by 0.16, you can find the base before 16% tax was added and the amount of tax paid.