Add 20% tax to amount

Question

I have a amount without 20% Tax in my country.. For example, 12,24 € it s without tax and 14,70 EUR it's with a TAX.

How can I add 20% to 12.24 EUR Amount in PHP?

My script is:

<? echo round($cena*(20/100)+$cena, 2);?>

But with this script is amount with TAX 14,40 EUR and in real it is 14,70 EUR. Where is problem? And numbers with zero at start it don't calulcate.. It will show 0,- EUR.

Thanks.

`20/100` is most likely treated as integers, and rounded down to `0` — Thilo, Oct 22 '15 at 08:49
Maybe this will help: http://stackoverflow.com/questions/11114861/php-adding-2-decimal-points-numbers-money-gives-wrong-results-in-total-amount. And btw 1.2 x 12.24 = 14.69 — Miqi180, Oct 22 '15 at 08:54
Does this help? http://stackoverflow.com/questions/4325363/converting-a-number-with-comma-as-decimal-point-to-float — Klas Lindbäck, Oct 22 '15 at 14:56

Ninju · Answer 1 · 2015-10-23T04:38:03.437

2

Use this

 $num = 12.24;
 $percentage = 20;
 $num += $num*($percentage/100);
 $num = round($num, 1);      // 4
 $num = sprintf('%0.2f', $num);
 echo $num;

edited Oct 23 '15 at 04:38

answered Oct 22 '15 at 09:04

Ninju

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score 0 · Answer 2 · answered Oct 22 '15 at 08:51

0

As mentioned in comments, just multiply that number by 1.2. So:

<?php echo round($cena * 1.2, 2); ?>

answered Oct 22 '15 at 08:51

Martin Heralecký

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This doesn't answer the question. – Klas Lindbäck Oct 22 '15 at 15:01

score 0 · Answer 3 · answered Oct 22 '15 at 09:05

0

if you use calculator to solve it, 14.70 is correct. to get 14.40

<?php echo round($cena * 0.18, 2); ?>

0.18 is 18%

answered Oct 22 '15 at 09:05

Fenny

41
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Your observation is correct, but it doesn't answer the question. – Klas Lindbäck Oct 22 '15 at 14:59

score 0 · Answer 4 · answered Oct 22 '15 at 14:48

0

But with this script is amount with TAX 14,40 EUR and in real it is 14,70 EUR. Where is problem?

The problem is with the format of your input, 12,24. It is treated as 12. This is probably because PHP expects the decimal point to be . and not ,.

answered Oct 22 '15 at 14:48

Klas Lindbäck

33,105
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Add 20% tax to amount

4 Answers4