After a death, families in Wilmington may be dealing with a home, bank accounts, funeral arrangements, and difficult personal decisions at the same time. Understanding probate deadlines can help the person named as executor, or the relative who may need to become administrator, avoid preventable delays while protecting the estate.
In Delaware, the probate process is generally handled through the Register of Wills in the county where the deceased person lived. For Wilmington residents, that usually means New Castle County. A deadline may begin on the date of death, the date the estate opens, or the date letters are granted, so it is important to write down each date and keep copies of every filing.
Table of Contents
Table of Contents
- The First Filing Deadline: Delivering the Will
- When Should a Wilmington Estate Be Opened?
- Important Probate Deadlines After Opening
- Assets That May Avoid Probate
- Creditor Claims, Bills, and Taxes
- Mistakes That Can Create Delays
- A Practical Deadline Checklist
The First Filing Deadline: Delivering the Will
Delaware law requires a person who has custody of a document that appears to be the deceased person’s will to deliver it to the Register of Wills for the county where that person resides within 10 days after receiving information about the death. This duty applies even if the person holding the will does not expect to serve as executor or believes probate may not be necessary.
Do not alter, hide, discard, or write on the original will. Store it safely and gather related materials, including codicils, trust documents, death certificates, deeds, account statements, and recent tax returns. An original will matters because the Register of Wills may need it to determine whether it can be admitted to probate.
When Should a Wilmington Estate Be Opened?
Delaware does not impose one universal number of days for every family to open a probate estate after a death. Still, an executor or interested family member should review the circumstances promptly. Time-sensitive issues can arise quickly when a deceased person owned a Wilmington residence, had bills in their individual name, operated a business, or left assets that an institution will not release without court authority.
The New Castle County Register of Wills explains that probate is generally required when a deceased resident owned Delaware real estate in their name alone or had more than the applicable threshold of individually owned personal property. Its guidance on the probate process also explains that the estate is considered open when Letters Testamentary or Letters of Administration are granted.

For smaller estates, a simplified small-estate process may be available if the statutory requirements are met. Eligibility depends on the date of death, the value and ownership of assets, and whether the person owned real estate individually. It is wise to confirm the current threshold and forms before relying on a small-estate affidavit.
Important Probate Deadlines After Opening
Within Three Months: File the Inventory
After letters are granted, the personal representative generally must file an inventory and appraisal within three months. The inventory identifies estate assets and their date-of-death values. It may include real estate, bank accounts, vehicles, investments, personal property, debts owed to the deceased, and other interests required by Delaware law.
Start compiling information immediately rather than waiting for the deadline. Request statements, photograph household valuables, secure mail, and keep a ledger of funds received and expenses paid. If more time is needed, submit an extension request before the due date rather than allowing the deadline to pass.
Within 40 Days of Letters: Creditor Notice Procedures Begin
Delaware law requires notice to creditors to be posted and, in many estates, published within 40 days after letters are granted. The Register of Wills coordinates the required notice process. This step is important because it places potential creditors on notice that an estate has been opened.
Eight Months From Death: Pre-Death Creditor Claims
Claims against the deceased that arose before death are generally barred unless presented within eight months of the date of death, subject to Delaware law and any earlier applicable limitation period. The rules are set out in Delaware’s provisions on creditor claims against an estate. A personal representative should not assume every bill is valid, but should preserve invoices, correspondence, and records needed to evaluate each claim.
Within One Year: File an Accounting
An executor or administrator generally must render an accounting within one year from the date letters were granted. The accounting reports estate assets received, income, expenses, debts, and proposed distributions. If the estate remains open, later accountings may be required annually. Delaware permits limited extensions for sufficient cause, but an extension should be requested before an accounting becomes overdue.
Assets That May Avoid Probate
Before opening an estate, identify how each asset is titled. A will does not necessarily control property that passes by contract or ownership designation. Examples may include:
- Life insurance or retirement accounts with a valid named beneficiary.
- Property held in a properly funded trust.
- Accounts or real estate owned jointly with survivorship rights.
- Property transferred through a valid transfer-on-death arrangement.
That does not mean these assets can be ignored. Beneficiary forms, deeds, account agreements, and trust terms should be reviewed carefully. A personal representative should also avoid distributing probate assets early, because legitimate debts, taxes, and administration costs may still need to be paid.
Creditor Claims, Bills, and Taxes
Keep estate funds separate from personal funds. Continue necessary expenses that protect estate property, such as appropriate insurance, utilities, mortgage-related obligations, and reasonable maintenance for a vacant home. At the same time, do not rush to pay every demand that arrives in the mail or by telephone.
Some bills may be covered by insurance, may not be enforceable, or may require formal presentation as an estate claim. Keep a calendar for the eight-month claims period, tax due dates, court filings, and deadlines for responding to any dispute. Final individual income tax filings and, in some cases, estate income tax or estate tax filings may also be required.
Mistakes That Can Create Delays
- Waiting too long to deliver the original will.
- Using the deceased person’s individual bank account without authority.
- Giving away furniture, jewelry, vehicles, or sentimental items before ownership is clear.
- Failing to keep receipts, bank records, and a written activity log.
- Missing the inventory or accounting deadline without requesting an extension.
- Overlooking beneficiary designations, jointly held property, or out-of-state assets.
- Distributing money before creditor claims, expenses, and taxes are adequately addressed.
A Practical Deadline Checklist
For a Wilmington estate, begin by recording the date of death and preserving the original will. Deliver the will within the applicable 10-day period, contact the New Castle County Register of Wills promptly if probate may be needed, and calendar each later deadline from the date letters are granted.
Conclusion
The most useful approach is orderly rather than rushed: protect the home and property, identify the assets and debts, keep estate records separate, meet the three-month inventory deadline, monitor the eight-month creditor period, and prepare for the one-year accounting. When the estate includes real estate, significant debt, a business, unclear documents, or family conflict, obtaining legal and tax guidance early can help prevent costly mistakes.