A safe deposit box inventory form is the witnessed written record of everything found inside a bank vault box, prepared when the box is opened after the renter’s death and signed by the people present. States require this accounting before contents can be removed, and executors use the signed form to satisfy the probate court, calculate estate and inheritance taxes, and prove nothing went missing between the vault and the estate file. Banks and many probate courts supply their own version of the form, and the fields and filing rules vary by state.
When the Form Is Required
The usual trigger is death. When a box renter dies, the bank freezes access until a court-appointed personal representative arrives with a death certificate and letters testamentary or letters of administration. The box is then opened and every item cataloged on the inventory form before anything leaves the vault. Many states treat this step as mandatory and tie it directly to inheritance tax compliance.
The form also gets used when a box is drilled open because the keys are lost, when a bank turns abandoned contents over to the state, and when a court orders the box opened to search for a will or burial instructions. In the will-search situation, access is limited: you can look for the document but not remove jewelry, cash, or other property until the estate is formally opened.
You can keep a personal list of your own box at any time, but only the witnessed version carries legal weight.
Who Must Be Present When the Box Is Opened
State laws set the witness rules, and they vary. A typical arrangement requires at least two people: a bank employee and either the personal representative or the representative’s attorney. Some states add a government official, such as a representative from the revenue department or the clerk of the superior court. Each person present signs the form, in some jurisdictions under penalty of perjury.
The witness requirement exists to prevent disputes. Without independent observers, a disgruntled heir could claim the executor pocketed a diamond ring, or the estate could claim the bank lost a stack of bonds. Two signatures on the same document shut down most of those arguments before they start.
What the Form Asks For
The layout differs from one form to the next, but nearly every version asks for the same core information.
Box and Bank Details
Enter the name and address of the financial institution, the branch location, and the box number from the lease agreement. List the date of the original rental contract if known. Name every person who had access to the box, along with their addresses. If the box was jointly held, note the co-renter’s name and relationship to the deceased. Record the date and time of the inventory opening and, when the bank can provide it, the name of the person who last entered the box and the date of that entry.
The Contents
List each item on a separate line, with enough detail that someone who was never in the room could identify the object and verify it later. For common categories:
- Cash: total amount and denominations.
- Jewelry: type of piece, metal, any stones, and inscriptions or hallmarks. Attach a recent appraisal if one exists.
- Coins and stamps: mint years, denominations, condition, and catalog numbers for rare items.
- Securities: issuing company, number of shares, certificate numbers, and CUSIP numbers when printed on the document.
- Legal documents: policy numbers for insurance policies, property addresses for deeds, account numbers for financial instruments.
- Miscellaneous: describe fully. “Small gold bar, approximately 1 oz, stamped [mint name]” beats “gold item.”
Values
Enter estimated fair market values as of the date of death, not the date the item was originally purchased. For publicly traded securities, use the mean between the high and low prices on the date of death. For unique items like art, antiques, or jewelry, use a recent professional appraisal.
Federal regulations require an expert appraisal, submitted under oath with the estate tax return, when household and personal effects with artistic or intrinsic value exceed $3,000 in total. That threshold is low; a single good piece of jewelry can push you over it. For individual works of art appraised at $50,000 or more, the IRS offers a separate review through its Art Advisory Panel.1Internal Revenue Service. Rev. Proc. 96-15 Getting the appraisal before you complete the inventory lets you enter accurate figures on the form and on the estate tax return at the same time.
Filing the Completed Form
After every witness signs, the bank retains a copy for its records. In most states the personal representative must also file a copy with the probate court, often within a short window; some states require filing within 10 days of the opening, though deadlines vary. If the estate is subject to state inheritance tax, a copy may also need to go to the state revenue department. Ask the bank and the probate attorney which offices need copies in your state, because a missed filing deadline can hold up the entire estate.
You should receive at least one certified copy of the signed form. Keep it with the estate file, not back inside the safe deposit box, since the box may be sealed the moment the bank learns of a later death or dispute.
Reporting the Contents on Form 706
If the gross estate exceeds the federal filing threshold, which is $15,000,000 for deaths in 2026, the executor must file Form 706 with the IRS.2Internal Revenue Service. Estate Tax Safe deposit box contents go on Schedule F, which covers miscellaneous property not reported elsewhere on the return. Schedule F specifically asks whether the decedent had or had access to a safe deposit box at death, the box’s location, and the name and relationship of any joint depositor.3Internal Revenue Service. Schedule F (Form 706)
Every item in the box that belongs to the estate must appear somewhere on the return. Stocks go on Schedule B, real estate deeds reference property on Schedule A, and anything that does not fit elsewhere lands on Schedule F. If you leave anything out, Schedule F requires a written explanation of why.3Internal Revenue Service. Schedule F (Form 706) A blank explanation with missing items is the kind of thing that triggers an audit.
Even when the estate falls below the federal filing threshold, the inventory still matters for state estate or inheritance taxes, which apply at much lower amounts in many states, and the probate court will want to see it as part of the estate accounting.
Penalties for Omitting or Undervaluing Contents
Leaving items off the inventory or lowballing their value creates real financial exposure. The IRS imposes an accuracy-related penalty of 20 percent of any tax underpayment caused by negligence or a substantial understatement. For individuals, a substantial understatement means the reported tax was off by at least 10 percent of the correct amount or $5,000, whichever is greater.4Internal Revenue Service. Accuracy-Related Penalty
If the IRS determines that the omission was intentional rather than careless, the civil fraud penalty under Section 6663 jumps to 75 percent of the underpayment attributable to fraud.5Internal Revenue Service. 20.1.5 Return Related Penalties Interest accrues on top of these penalties from the original due date until the balance is paid. Beyond taxes, an executor who deliberately hides or underreports assets can be removed by the probate court and held personally liable to the beneficiaries.
If You Can’t Find the Key or the Will
Lost keys are common, especially when the renter died without telling anyone where the keys were kept. The bank will arrange to have the box drilled open by a locksmith, and the estate pays for it. One regional bank publishes a fee of “cost plus $25,” and the total anecdotally runs from a couple hundred dollars up depending on the lock and the locksmith. The bank replaces the lock afterward and issues new keys if the box is staying open for a surviving co-renter.
If no one has been appointed personal representative yet and the family just needs the will, many states allow a limited court order for that specific purpose. A family member or interested party petitions the local court, and the judge may grant supervised access solely to search for a will or burial instructions. A bank employee watches the search, the box is inventoried in the process, and nothing else leaves the vault until the estate is formally opened.