The interest rates that the will IRS charge on underpayments and pay on overpayments remains unchanged for the third quarter of 2013 (July 1 through September 30). The rates are:
The 3% rate applies to underpayments of estimated taxes by individuals. All of these rates have held steady since October 1, 2011.
Source: Rev. Rul. 2013-10
The legal transfer of property, rights, or interest to another person called an assignee. You cannot avoid tax on income by assigning the income to another person.