Form 56 and representing a deceased taxpayer or estate: fiduciary notice, then power of attorney

Fiduciary versus representative

The Form 56 instructions draw the line: “A fiduciary is treated by the IRS as if the fiduciary 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.” By contrast, “An authorized representative is treated by the IRS as the agent of the taxpayer” and can do only what the Form 2848 authorizes. Circular 230 section 10.7(e) agrees that a fiduciary “is considered to be the taxpayer and not a representative of the taxpayer.”

The statutory basis is IRC 6903(a): on notice that a person is acting in a fiduciary capacity, the fiduciary “shall assume the powers, rights, duties, and privileges of such other person in respect of a tax imposed by this title” until notice that the capacity has ended. IRC 6036 separately requires receivers, bankruptcy trustees, assignees for the benefit of creditors and executors to give notice of qualification. Form 56 is how both notices are given.

The instructions warn against mixing the two: “Do not use Form 56 if you’re notifying the IRS that you’re the authorized representative of the taxpayer. Instead, use Form 2848.” And the regulations make the order clear: when a fiduciary is involved, “a power of attorney is not required. Instead form 56, “Notice Concerning Fiduciary Relationship” should be filed” (26 CFR 601.503(d)).

What happens to existing authorizations at death

A power of attorney does not survive the principal. IRM 21.1.3.3 tells IRS phone assistors that if the taxpayer is deceased, “the third-party authorizations (POAs, TIAs) are nullified,” and to determine whether the caller is authorized to receive information after the date of death. IRM 21.3.7.10 says authorizations “expire with the death of the taxpayer and must be deleted from the CAF database after verification (death certificate or Form 56) is received.” A third party designee checkbox on a return also ends at death if death occurs within the one-year designation period (IRM 21.1.3.3.1).

So the representative who handled the decedent's exam or collection case cannot simply continue. The fiduciary files Form 56 and signs a new Form 2848 naming the representative, for the decedent's final returns and for the estate's own returns.

Who files Form 56

The instructions say a fiduciary who “seeks to act on behalf of a taxpayer before the IRS or to inform the IRS that the fiduciary capacity has terminated” must file Form 56. Their definition lists examples: “administrators, conservators, designees, executors, guardians, receivers, trustees of a trust, trustees in bankruptcy, personal representatives, persons in possession of property of a decedent’s estate, or debtors-in-possession of assets in any bankruptcy proceeding by order of the court.”

Bankruptcy is partly different. The instructions note that a bankruptcy trustee, debtor-in-possession or like fiduciary “is not required to give notice of qualification under section 6036” because the Bankruptcy Rules govern their notices. See bankruptcy and tax debts.

Completing Form 56 line by line

Part IIdentification

Name, identifying number and address of the person for whom you act, then your own name and address. File a separate form for each person: an executor files one for the decedent (final Form 1040) and one for the estate.

Identifying numberSSN, ITIN or EIN

For an individual, the SSN or ITIN; for the decedent, the SSN or ITIN on the final Form 1040; for an estate filing Form 706, the decedent's SSN or ITIN and the estate's EIN if applicable; for other entities, the EIN.

Line 1aTestate estate

Executor of a decedent who left a valid will and was authorized by a court. Attach current letters testamentary or a court certificate; enter date of death on line 2a.

Line 1bIntestate estate with court appointment

Court-appointed administrator. Attach letters or a court certificate; date of death on line 2a.

Line 1cGuardianship

Court-appointed guardian, custodian or conservator; appointment date on line 2b.

Line 1dIntestate estate without court appointment

Only if no administrator was appointed and you are the sole person charged with the decedent's property; date of death on line 2a.

Line 1eTrusts

Trustee under a valid instrument; appointment or transfer date on line 2b.

Line 1fBankruptcy, assignment for creditors, receiver or fiduciary

Bankruptcy trustee, assignee, or court-appointed receiver or fiduciary; date on line 2b, and for receivers lines 2c and 2d on whether the court controls the assets.

Line 1gOther

Describe the authority for the relationship; date on line 2b.

Lines 3 and 4Type of tax and forms

The taxes and forms you will file as fiduciary.

Lines 5a and 5bYears or periods

Check 5a and list periods if your authority does not cover all years.

Part IIRevocation or termination

Complete only to end a prior fiduciary notice.

Part IIICourt and administrative proceedings

Only for receivers, trustees or fiduciaries appointed in non-bankruptcy proceedings; assignees attach an asset description and planned actions.

Part IVSignature

Sign under penalty of perjury with a title describing your role (executor, trustee, personal representative, sole heir in possession, and so on).

Two cautions from the instructions: “Form 56 cannot be used to request copies of notices and correspondence,” and it “cannot be used to update the last known address” of the person for whom you act; use Form 8822 or 8822-B. Also, “You must be prepared to furnish evidence that substantiates your authority to act as a fiduciary.” Under 26 CFR 601.503(d)(3) the IRS may require a short-form certificate or authenticated letters testamentary or of administration for an executor, and other evidence for testamentary trustees, residuary legatees and distributees. More detail is on the Form 56 form page.

Where and when to file

File “with the Internal Revenue Service Center where the person for whom you’re acting is required to file tax returns,” using the address in that return's instructions. The general rule is to file when you create or terminate the relationship.

Receivers and assignees have a deadline and a separate address. The June 2026 instructions say a receiver, similar fiduciary (including a fiduciary in aid of foreclosure) or assignee for the benefit of creditors “must file Form 56 on or within 10 days of the date of appointment” with the insolvency function at Internal Revenue Service, Insolvency, MS 5027 DAL, Dallas, TX 75242, and may also file with the service center to give the IRC 6903 notice. The new lines 2c and 2d ask whether all or substantially all of the taxpayer's assets are in the court's control or custody.

Getting authorized after Form 56

With Form 56 on file, the fiduciary signs Form 2848 for the decedent or estate. The Form 2848 instructions say: “Because the fiduciary stands in the position of the person or entity, the fiduciary must sign the power of attorney on behalf of the person or entity.” For line 1, for a deceased individual's Form 1040, enter the decedent's name and SSN or ITIN and the executor's or personal representative's name, title and address. For an estate, enter the decedent's name and the executor's name, title and address, using the decedent's SSN for Form 706 and the estate's EIN for other forms (or the decedent's SSN if the estate has no EIN). If there is more than one executor, “only one co-executor having the authority to bind the estate is required to sign.”

The CAF unit checks the signer against IRS records. IRM 21.3.7.5.1 says that when a fiduciary signs, the examiner verifies the signer matches the second name line on the entity record and, if not, will “reject the authorization and request Durable Power of Attorney, court appointment papers, guardianship papers or Form 56.” Filing Form 56 first, or sending it with the Form 2848, prevents a rejection. See why the CAF unit rejects a form.

Estate tax returns have their own rule. IRM 21.3.7.6 processes Part 4 of Form 706 as an authorization for attorneys, CPAs and enrolled agents with the executor's dated signature, but cautions that Part 4 “was revised in August of 2025” and representatives can no longer use it to designate others to receive confidential information for the estate.

Who can get a decedent's or estate's information

IRC 6103(e)(3) opens a decedent's return, on written request, to “the administrator, executor, or trustee of his estate” and to heirs at law, next of kin and beneficiaries who show a material interest. IRM 11.3.2.4.11 says the requester “must furnish satisfactory evidence” of status, such as birth or death certificates, letters testamentary, a will or other court document, and that heirs, next of kin, beneficiaries and donees must show “a material interest that will be affected by the requested information.” For an estate's own returns, IRM 11.3.2.4.7 gives the same access to the administrator, executor or trustee, and to heirs and beneficiaries with a material interest. Any of these persons may appoint an attorney-in-fact to receive the information (IRC 6103(e)(6); IRM 11.3.2.4.13).

How IRS phone assistors handle decedent accounts

IRM 21.1.3.4 tells assistors that return information “may be disclosed to the individual whose name appears on the Entity second name line if they are the administrator, executor, trustee, or other fiduciary authorized to act on behalf of the decedent.” If that line is blank or shows a name without a fiduciary title, the assistor checks whether documentation must be faxed. The IRM warns that Form 1310, the refund claim for a deceased taxpayer, “is tax year-specific and does not establish a fiduciary relationship.” A first-time Form 56 faxed during a call is forwarded with its documentation to the Entity function; a duplicate of one already submitted is destroyed. Authorized parties must still pass authentication, which may include the decedent's date of death.

Questions practitioners ask