ITINs Will Have An Expiration Date For the first time, new ITINs will be issued for a five-year period rather than an indefinite period. This change will help ensure that ITINs are being used for legitimate tax purposes. Taxpayers who still need an ITIN will need to reapply at the end of the expiration period. In addition, the IRS will engage with interested groups on options to deactivate or refresh information underlying previously issued ITINs. This step will provide additional safeguards to the ITIN program and help ensure only people with legitimate tax purposes are using the numbers. http://www.irs.gov/uac/Newsroom/Updated-ITIN-Procedure-Changes-