Can You Add a Co-Trustee, i.e Responsible Person After Your Tax Stamp Has Been Approved?
According to the ATF's, "GENERAL 41F QUESTION &ANSWERS" section of the ATF - General 41F Questions and Answers .PDF, once an application has been approved, no documentation is required to be submitted to ATF when a new responsible person is added to a trust or legal entity.
Q: Will new responsible persons, added after the making or transfer, be subject to the same requirements?
A: Once an application has been approved, no documentation is required to be submitted to ATF when a new responsible person is added to a trust or legal entity. However, should a responsible person change after the application has been submitted, but before it is approved, the applicant or transferee must contact the NFA Branch for guidance.