Jump to content
  • Checkout
  • Login
  • Get in touch


The e-commerce.

Tax rounding issue


Recommended Posts

I have a problem when calculating sales tax:


Here is the deal:


During checkout OS makes the following calculation:

Item Price: 18.95

Shipping : 3.35

Subtotal: 22.30

Tax (8% Applied to both item and shipping in my state): 1.79

Total: 24.09


Now the tax should be 1.78.


It seems that OS is either:

1. incorrectly rounding up (22.30 x .08 = 1.784 which should be 1.78 like quickbooks says)

2. or incorrectly rounding the tax of each item first and then adding them (18.95 x.08 = 1.516 rounded to 1.52 PLUS 3.35 x .08 = 0.268 rounded to .27 Equals 1.79. I believe this is NOT the correct way to round multiple lines since you loose accuracy at every line.


Anyone know where is the problem or a possible fix? I spend about 2 hours searching but the rounding issues people seem to have are related to other modifications. Thanks. xp.

Link to comment
Share on other sites

  • 1 month later...

I have exactly the same problem :'( ! It's annoying and frustrating. I have have searched trough these forums and bug reports for hours now, but found no good answers. Please help us!





Link to comment
Share on other sites

is your currency in the default osc setup correctly? Like 1.0000000000 and as the default one? And also check the tax rates in osc admin. The Tax Rate % should read 8.0000

Link to comment
Share on other sites


This topic is now archived and is closed to further replies.

  • Create New...