Example: Suppose you estimated your current year's taxable income exactly right, but used the tax rate schedules for last year to estimate the tax. (fairmark.com)
Use the Tax Rate Schedule on page 4 to determine the values for lines 24 and 27. (sapling.com)
Another (lesser) approach might be to negotiate different rate schedules for different levels of difficulty for the matter as a whole. (lawdepartmentmanagement.typepad.com)