Will TNTAP replace the old system for IRP for doing things such as transfers, renewal and supplements? Yes, this system will replace the old system for IRP, IFTA and INTRASTATE. All functions will be available on TNTAP. July 12, 2018 21:16 Related articles How do I renew my IRP account? What Motor Carrier functions can I do online through TNTAP? Can IRP registrations be processed through the mail or electronically? Do I have to reapply in TNTAP? What can I do on TNTAP?