Re Form 56:
Who Should File
Form 56 should be filed by a fiduciary (see Definitions below) to notify the IRS of the creation or termination of a fiduciary relationship under section 6903. For example, if you are acting as fiduciary for an individual, a decedent’s estate, or a trust, you may file Form 56.
Do not use Form 56 if you are notifying the IRS that you are the authorized representative of the taxpayer. Instead, use Form 2848, Power of Attorney and Declaration of Representative.
A fiduciary is treated by the IRS as if he or she is actually the taxpayer. Upon appointment, the fiduciary automatically has both the right and the responsibility to undertake all actions the taxpayer is required to perform. For example, the fiduciary must file returns and pay any taxes due on behalf of the taxpayer.
An authorized representative is treated by the IRS as the agent of the taxpayer. He or she can only perform the duties authorized by the taxpayer, as indicated on Form 2848. An authorized representative is not required nor permitted to do anything other than the actions explicitly authorized by the taxpayer.
