Once an individual has become certified, annual renewal of the registration of the certificate is required. Renewal of registration requires the completion of an application indicating continued agreement with certain principles of practice and compliance with the ARRT's continuing education requirements. Individuals renew registration according to their birth month. The registration of the certificate for those who have passed the examination and are otherwise eligible is valid through the next birthmonth. For example, an individual with a June birthmonth who passes the examination in March 1999 will receive a certificate good through the end of June 1999.
Continued registration requires annual renewal of registration.
An application for renewal of registration is mailed the month before the birthmonth and must be postmarked by the U.S. Postal Service on or before the last day of the birthmonth to renew without penalty. In the example above, the application for renewal would be mailed to the registrant in early May and must be returned to the ARRT with a postmark no later than June 30, 1999. Registration of advanced-level categories requires continued registration of supporting categories. The ARRT considers the date applied to mail by the U.S. Postal Service as the official postmark. Postal stamp dates applied by inhouse mailroom and mailing service postal meters are acceptable only if another date stamp is not applied by the U.S. Postal Service.