How do I renew my IRP account? IRP accounts may be renewed online through the Tennessee Taxpayer Access Point (TNTAP). You can also renew using paper forms by clicking here. July 16, 2018 20:59 Related articles Will TNTAP replace the old system for IRP for doing things such as transfers, renewal and supplements? Can IRP registrations be processed through the mail or electronically? Can I file my IFTA return online? What can I do on TNTAP? What if my account for IRP or IFTA is locked?