When the Always Round Up setting is enabled, the tax amounts of 1/100th of a cent or higher are always rounded up to the nearest penny.
Note: Enabling this setting may over-tax the Customer. Always Round Up should normally be disabled because Keystroke already rounds the tax amount as needed. For example, if the calculated tax is 1.258, it is already rounded to 1.26.
See:
Tax Tables - General Information
Configuration Manager Contents