Simple math is looney

Zen Cart 1.2.6

On check out for instance,

($9 + $2)

• $8.12 shipping

$1.29 Tax

My calculator reads 20.41

But zencart adds it as $20.42 . . . . WHAT GIVES . . this is fifth invoice the accountant has sent to us with this issue and others.

The other issue I had earlier after the install was it was adding with some crazy method of product price then tax then subtracting a discount, when it should always be tax on the total price not what it was before discounts . . . who figured out the math for this thing??

Is this common? If so I need to change to a different cart. Please let me know.

Thanks.

Perhaps the explanation I made in the following post about how Zen Cart calculates the taxes may be of help to you?
http://www.zen-cart.com/forum/showthread.php?t=44466#post254267

OK so I read your post, and it still makes no sense.

If I am showing the customer an invoice that reads . . .

Sub: $11.00
UPS: $8.12
NC Tax: $1.29

Then TOTAL: $20.42

That makes no sense . . .

I can add those numbers all day and get 20.41 all day . . .

If I break down into calculating tax on each individual item then tax on shipping and add those together I get $1.2906 which does not round to $1.30 in any sense. And if it is rounding it to $1.30 why doesn't it show that on the order. I mean pretty much any body can add these days and my clients customers seem to be doing just that. And if you show them a set of numbers with a total that is off then your messing up.

IS THERE ANYWAY TO FIX THIS??

IS THERE ANYWAY TO FIX THIS??

Start by upgrading to the most recent release. There have been numerous fixes and improvements since the version you are using.