Manitoba Tax calculation differences-2014 &2015

Hi All,

We have a tax calculation difference for manitoba province with 2014 & 2015.

For manitoba commissioned employee for period 01/2014 tax was not calculated.perviously & for the same employee if run payroll now for 01/2014 tax is getting calculated .(with no changes in master data & tax infotypes)

Please help us if there are any changes in tax calculation formula in 2014& 2015 in KATAX function or any change related to tax calculation..

Thanks in advance.

Thanks & Regards,

Harish