Opening a probate case requires more than completing a court form. The probate court and, subsequently, every financial institution, title company, and government agency the executor deals with will need specific documents before taking any action. 

Assembling the right documents before filing – rather than discovering missing pieces after the fact – saves time, avoids repeated court visits, and keeps the administration of the estate moving forward.

This guide covers the full set of documents typically required to open probate proceedings in the United States, organized by category and purpose.

The Death Certificate

The death certificate is the foundational document in any estate proceeding. It is the official government record confirming that the person has died, and it is required by every institution involved in the settlement of the estate.

How Many Certified Copies Do You Need?

Certified copies – not photocopies – are required by most institutions. A photocopy of a death certificate is generally not accepted for legal or financial purposes. When ordering death certificates through the vital records office or funeral home director, request a sufficient number to cover all anticipated needs.

A practical minimum is 10 to 15 certified copies. You will typically need separate copies for:

• The probate court
• Each bank and financial institution holding accounts
• Each brokerage or investment account
• The Social Security Administration
• Life insurance companies
• Retirement account administrators
• The decedent’s employer (if applicable, for benefits or pension)
• The county recorder’s office (for each real property transfer)
• The DMV (for each vehicle transfer)
• The IRS and state tax authority

It is more economical to order extra copies at the outset than to reorder later, as the cost per certificate is lower when ordered in bulk from the vital records office shortly after the death.

The Original Will

If the decedent left a will, the original signed document must be filed with the probate court. A photocopy of the will is not accepted for probate purposes – the court requires the original. This requirement exists because courts must be able to verify the authenticity of the signatures and confirm that the document has not been altered.

What If the Original Will Cannot Be Found?

If the original will cannot be located but a photocopy or electronic copy exists, it may still be possible to probate the copy under some states’ laws. However, this requires additional legal proceedings, including submitting evidence that the original was not intentionally destroyed by the testator. If the original simply cannot be found, the estate may be treated as intestate – as though no will existed – which means the court applies the state’s default inheritance rules.

Self-Proving Wills

Many states allow what is called a self-proving will, which includes a notarized affidavit signed by the testator and witnesses at the time the will was executed. A self-proving will can be admitted to probate without requiring the witnesses to appear in court and testify, which simplifies and speeds the process. If the will is self-proving, note this when filing.

The Probate Petition

The petition to open probate is the formal document filed with the court asking it to take jurisdiction over the estate and appoint a legal representative. State courts provide standardized petition forms, and the petitioner must complete and sign the petition before filing.

Standard Petition Content

The probate petition typically includes:

• The decedent’s full legal name, date of birth, date of death, and county of domicile
• A statement that the will is being offered for probate (in testate cases)
• The petitioner’s name, address, and relationship to the decedent
• A list of all heirs at law and beneficiaries under the will, including their names, addresses, and relationships
• A general description of the probate estate and its approximate value
• A request for the court to appoint the named executor or a suitable administrator

Supporting Declarations or Affidavits

In many states, the petition must be accompanied by a declaration or affidavit signed by the petitioner under penalty of perjury affirming that the information in the petition is accurate and complete. Some courts also require a separate affidavit confirming that the will is the decedent’s last will and that it has not been revoked.

Court-Specific Forms

In addition to the main petition, most probate courts require a set of supporting court forms at the time of filing. While these forms vary by state and county, common required forms include:

• Notice of Petition to Administer Estate (or equivalent): A form that the petitioner will use to notify heirs and beneficiaries of the probate proceeding. In many states, this form must be prepared at the time of filing and served on interested parties before the hearing.
• Proposed Order Admitting Will to Probate and Appointing Executor: Many courts require the petitioner to submit a proposed order that the court can sign at the hearing, rather than drafting the order from scratch. Using the court’s standard proposed order form is usually required.
• Waiver of Bond or Bond Filing Form: If the will waives the requirement for the executor to post a bond, the court will note this in the order. If a bond is required – because the will does not waive it or because no will exists – the executor must arrange a probate bond through a surety company and file proof of bond with the court.
• Confidential Supplemental Information Form: Some states require a confidential form listing the Social Security numbers and dates of birth of all heirs and beneficiaries, filed separately from the main petition to protect personal information.

Executor Identification and Qualification Documents

The person petitioning to serve as executor or administrator must establish their identity and, in some cases, their qualifications to serve. Required identification documents typically include:

• A government-issued photo ID (driver’s license or passport)
• Proof of the petitioner’s address, particularly if they reside in a different state than the decedent

Non-resident executors are permitted in most states but may be subject to additional requirements. Some states require a non-resident executor to designate a resident agent in the state for service of legal process. A small number of states restrict the appointment of non-resident executors who are not related to the decedent by blood or marriage.

Letters Testamentary and Letters of Administration

While these documents are issued by the court rather than filed by the petitioner, it is important to understand them in the context of document planning. Once the court approves the petition, it issues Letters Testamentary (if a will names the executor) or Letters of Administration (if no will exists or the named executor cannot serve). These letters are the executor’s proof of authority.

Order at least five to ten certified copies of the letters at the time of issuance. Each financial institution and government agency you contact will typically require its own original certified copy. Unlike death certificates, court-issued letters are obtained directly from the court clerk, and reordering takes additional time and may require a separate fee.

Asset Inventory Documentation

While a full formal inventory is typically filed with the court weeks or months after the probate case is opened, preliminary asset documentation is useful at the filing stage for estimating the estate’s value and identifying what needs to be administered.

Gather as much of the following as possible before filing:

• Real property: Copies of recorded deeds, recent property tax statements, and any mortgage or lien documents
• Bank accounts: Recent account statements showing account numbers, institution names, and balances
• Investment accounts: Recent brokerage statements with account numbers and approximate values
• Retirement accounts: Account statements showing the type of account, balance, and named beneficiaries
• Life insurance: Policy documents showing the insurer, policy number, death benefit, and named beneficiaries
• Vehicles: Titles or registration documents
• Business interests: Partnership agreements, LLC operating agreements, or stock certificates
• Outstanding debts: Mortgage statements, credit card statements, and any other creditor correspondence

This documentation serves a practical purpose at the filing stage: the petition typically requires an estimated estate value, and the inventory documents help support that estimate. It also ensures that nothing is overlooked when the formal inventory is prepared.

Filing Checklist

Use the following checklist as a starting point when preparing to file probate. Note that specific requirements vary by state and local court – always confirm with the court clerk before filing:

• Death certificates: 10 to 15 certified copies
• Original will: Filed with the court (retain copies for your records)
• Completed probate petition: Signed by the petitioner; use the court’s official form
• Proposed order: Admitting will to probate and appointing executor
• Notice forms: For serving on beneficiaries and heirs before the hearing
• Bond documentation: Waiver (if will waives bond) or proof of surety bond
• Petitioner ID: Government-issued photo identification
• Filing fee: Amount varies; confirm with the court in advance
• Supplemental confidential form: If required by the state or local court
• Preliminary asset documentation: For supporting the estate value estimate in the petition

For a complete guide to what happens after these documents are submitted, see our article on how to file probate petition.

For a walkthrough of what to expect at the first court appearance, see our guide on the probate first hearing process.

Documents Needed After Probate Is Opened

The filing documents open the case, but additional documents will be required as the administration progresses. Planning ahead for these can reduce delays later:

• Formal inventory: A detailed list of all probate assets and their appraised values, filed with the court within the state’s required timeframe
• Final accounting: A record of all receipts, disbursements, and proposed distributions, filed before the estate can be closed
• Estate tax returns: Federal Form 706 (if applicable) and any required state estate or inheritance tax returns
• Final income tax returns: Decedent’s final Form 1040 and, if the estate earns income, Form 1041
• Receipts from beneficiaries: Signed acknowledgments from beneficiaries confirming receipt of their distributions, filed with the court before the estate is closed

Summary

Opening probate requires a specific set of documents: certified death certificates in sufficient quantity, the original will, a completed and signed probate petition using the court’s official forms, supporting court forms such as the proposed order and notice forms, executor identification, and preliminary asset documentation. Assembling these documents before going to the courthouse reduces the risk of delays and ensures that the first filing establishes the case correctly. Because requirements vary by state and county, confirm the specific checklist with the local probate court clerk before filing.