We may use the following formula to compute the distribution amount an IRA owner who is applying 10 percent withholding must request to receive a specific “after withholding” amount.
G=N divided by .9
G= Gross Amount Withdrawn
N= Net amount the IRA owner desires to receive after 10 percent federal withholding has been taken out (example- $5,000)
G= $5,000 divided by .9
G= $5,555.55
Note: This formula must be adjusted if a different percent is elected. If, for example, an IRA owner requests 20 percent withholding, financial institutions may use the above formula by substituting .8 for .9 (1.0-.2=.8)