Updated to 1.10.2
Fixed the problem where the defaults are written back to the config file on every reload.

Update Instructions:
Remove EnderCore-1.4.jar and Taxes-1.4.jar from you plugins folder.
Unzip the Taxes-1.5.zip file to your plugins folder.
Remove the Taxes-1.5.zip file from your plugins folder if it is there.
Remove any config default tax brackets that you don't want.
Restart your server.
Check the config file and the default tax brackets that were removed should not be there.