Tax Rates and Markup fields need to be expanded

The tax rate and markup fields need to be expanded to at least five (5) characters past the decimal point. With more and more entities enacting self help taxes the need to be able to accurately calculate the tax is greater than ever. For example a tax rate of 7.375% cannot be setup in RTA because we stop at four past the decimal. We need to be able to reflect the tax as .07375.