By Pat Southern. Last updated 2011-03-29. Of the many men who led Rome, only a handful can truly be said to have profoundly and fundamentally shaped the empire's structure and direction. This gallery introduces six of the most important Roman emperors.
Tax Liability. The amount of total tax due the IRS after any credits and before taking into account any advance payments (withholding, estimated payments, etc.) made by the taxpayer.
Filing status of a federal taxpayer has an immediate impact on the tax rate applied to taxable income. Consider a taxpayer, whose filing status is Single, with a taxable income of $50,000. Per the 2010 Tax Table, the tax liability would have been $8,675, for an average tax rate of 17.35 percent.