The IRS plans to begin the renewals in October. The Protecting Americans from Tax Hikes Act, also known as the PATH Act, requires ITINs that have not been used on a federal tax return at least once in the last three years to be renewed. Otherwise they will no longer be valid for use on a tax return unless the taxpayer renews it. ITINs are frequently used by foreign nationals, resident aliens and undocumented workers.
ITINs issued by the IRS before 2013 that have been used on a federal tax return in the past three years will need to be renewed starting this fall. The IRS is putting in place a rolling schedule for the renewals to help taxpayers.