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Calculate VAT on a price and round to two decimal places
Description

This function is a simple PHP VAT calculator. It will calculate the 17.5% UK sales VAT (Value Added Tax) on an amount and then round the price to two (2) decimal places. For example, £5.95 would be £6.99125 with VAT added, which would be rounded to £6.99. The amount of vat can be altered to any amount of sales tax, so you can calculate a new price for any string using any percentage. This could come in useful if you needed to calculate the tax on a product in a shopping cart script.
The code





/*



Usage:



You want to calculate 17.5% VAT on a price of £4.67



$price_without_vat = 4.67



echo vat($price_without_vat);



This would return the new amount with 17.5% added, and would be rounded to 2 decimal places



*/



function vat($price_without_vat) {



$vat = 17.5; // define what % vat is



$price_with_vat = $price_without_vat + ($vat*($price_without_vat/100)); // work out the amount of vat



$price_with_vat = round($price, 2); // round to 2 decimal places



return $price_with_vat;



}



?>

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