An Affidavit of Domicile is a sworn legal document that establishes an individual's permanent legal residence -- their domicile -- at a specific point in time. Domicile is a legal concept distinct from mere residence: it refers to the place a person considers their permanent home, where they intend to return when absent, and where they exercise their civil rights. A person can have multiple residences but only one legal domicile at any given time.

This affidavit is primarily used in the context of estate administration following a death. Transfer agents such as Computershare, EQ Shareowner Services, and brokerage firms require an Affidavit of Domicile before transferring securities owned by a decedent. The requirement exists because the decedent's domicile determines which state has jurisdiction over the estate, which state's inheritance or estate tax laws apply, and whether the transfer requires court authorization.

The legal significance of domicile extends to taxation under state estate tax laws. States with estate or inheritance taxes (such as New York, Massachusetts, New Jersey, and Maryland) impose taxes based on the decedent's domicile. Under the principle established in Texas v. Florida (306 U.S. 398, 1939), when multiple states claim a decedent as a domiciliary, an interpleader action or voluntary arbitration may be necessary. The Affidavit of Domicile provides evidence that helps resolve these jurisdictional questions by documenting where the decedent lived, voted, paid taxes, and maintained community ties.

An Affidavit of Domicile is most commonly required when transferring stocks, bonds, mutual funds, or other securities owned by a deceased person. Transfer agents and brokerage firms will not process the transfer of assets from a decedent's account to an estate, trust, or beneficiary without this affidavit. This is standard practice across the financial services industry, mandated by the transfer agents' own compliance requirements.

Estate administrators and executors need this affidavit when filing the final estate tax return (IRS Form 706) and state estate or inheritance tax returns. The domicile determination affects which state's tax rates and exemptions apply, potentially representing significant tax savings or obligations.

Probate proceedings typically begin in the state where the decedent was domiciled. If the decedent owned property in multiple states, ancillary probate proceedings may be required in each additional state. The Affidavit of Domicile helps establish the proper forum for the primary probate proceeding.

Insurance companies processing life insurance claims may request this affidavit to determine the applicable state insurance regulations and to verify the claimant's relationship to the decedent. Banks closing accounts of deceased account holders also commonly require it as part of their estate settlement process.

Without an Affidavit of Domicile, the transfer of securities can be delayed indefinitely, estate tax filings may be challenged, and financial institutions may refuse to release funds -- all of which can significantly delay the distribution of estate assets to rightful heirs.

The decedent's full legal name, including any aliases, maiden names, or name variations under which they held assets, must be stated precisely. Transfer agents match the name on the affidavit against the name on the securities, and any discrepancy will delay processing.

The decedent's date of death and last permanent address (domicile) are the most critical elements of the affidavit. The domicile address should be supported by evidence such as the address used for voter registration, driver's license, tax filings, and vehicle registration. The duration of residency at the domicile address strengthens the affidavit's evidentiary value.

The affiant -- typically the executor, administrator, or surviving spouse -- must state their relationship to the decedent and affirm that they have personal knowledge of the decedent's domicile. A statement that the decedent did not maintain a domicile in any other state at the time of death helps prevent conflicting claims from other states. This is particularly important for individuals who divided their time between two or more states.

A statement regarding whether the estate is subject to probate, and if so, which court has jurisdiction, provides context for the transfer agent. The affidavit should also indicate whether a will exists and whether Letters Testamentary or Letters of Administration have been issued.

The affidavit must be signed by the affiant under penalty of perjury and notarized. Most transfer agents require the notarization to include a Medallion Signature Guarantee or a signature guarantee from a financial institution, which provides an additional layer of identity verification beyond standard notarization. The governing jurisdiction should be stated to establish which state's perjury laws apply to false statements in the affidavit.