You must complete the rollover by the 60th day following the day on which you receive the distribution. (This 60-day period is extended for the period during which the distribution is in a frozen deposit in a financial institution). The IRS may waive the 60 day requirement where failure to do so would be against equity or good conscience, such as in the event of a casualty, disaster, or other event beyond your reasonable control. To obtain the waiver in most cases, a request for a letter ruling must be made which include the applicable user fee. Refer to Internal Revenue Bulletin 2006-01 to get the Internal Revenue Procedure for requesting a letter ruling. A written explanation of rollover must be given to you by the issuer making the distribution. For information on distributions which qualify for rollover treatment, refer to Tax Topic 413, Rollovers from Retirement Plans. For information on the Direct Rollover Option, refer to Chapter 1 of Publication 590, Individual Retirement Arrangements (IRA's).

References:

• Publication 17, Your Federal Income Tax
• Publication 575, Pensions and Annuity
• Tax Topic 413, Rollovers from Retirement Plans

Source: www.irs.gov