Tax Rate on Price Variant won't allow for $108.25... makes me choose a whole number

To simplify things while configuring, I am using a base price of $100 plus the Tax Rate of 8.25% for a total of $108.25. This works fine when no variants are in place. However, when I create Price Variants and try and save the $108.25 price for any variation, it forces me to choose either $108 or $109 and will not allow $108.25. It's like it ignores fractions and requires whole numbers