If you’ve been named executor of a loved one’s estate in Massachusetts, you’re responsible for more than just distributing assets. One of your core duties is meeting specific filing obligations with the court and tax authorities and missing a deadline or skipping a required form can delay the process, trigger penalties, or even expose you to personal liability.

Massachusetts executor filing obligations refer to the legal paperwork and timelines you must follow when settling an estate through probate. These include submitting the will (if there is one), filing inventory and accounting documents, notifying creditors, and handling state and federal tax returns. The rules apply whether the estate is large or small, though simplified procedures may be available for smaller estates.

What paperwork does a Massachusetts executor actually have to file?

After someone dies, the executor typically starts by filing a petition for probate with the county Probate and Family Court where the person lived. If there’s a valid will, you’ll submit it along with the death certificate and a certified copy of the will. From there, key filings usually include:

  • An Inventory listing all estate assets and their values as of the date of death (due within three months of appointment)
  • Accountings showing income, expenses, distributions, and asset sales (usually filed before closing the estate)
  • Notice to creditors, which must be published and sent directly to known creditors
  • Massachusetts Estate Tax Return (Form M-706) if the estate exceeds the state exemption threshold
  • Federal Estate Tax Return (Form 706) if required under federal law

Each of these has its own deadline and formatting rules. For example, the Inventory isn’t just a rough list it must follow court guidelines and often requires supporting documentation like bank statements or real estate appraisals. Details on acceptable formats and submission methods are covered in our overview of probate form requirements in Massachusetts.

When do these deadlines actually kick in?

Timing matters. You generally have 30 days from the date of death to file the initial probate petition. The Inventory is due within three months after the court officially appoints you as executor. Tax returns both state and federal must usually be filed within nine months of the date of death, though extensions are possible.

Keep in mind that some counties may have local procedural rules, and informal probate (which is common in Massachusetts) still requires strict adherence to filing windows. Missing a deadline doesn’t automatically void your role, but it can lead to court inquiries, beneficiary complaints, or interest and penalties on unpaid taxes. If you’re unsure about your timeline, reviewing the full schedule in our guide to estate paperwork due dates can help clarify what’s expected and when.

What are common mistakes executors make with filings?

One frequent error is assuming that “small” estates don’t require formal filings. While Massachusetts offers a simplified procedure for estates under $25,000 (plus a vehicle), you still need to file an affidavit and meet basic notice requirements. Skipping this step can leave debts unresolved or block asset transfers.

Another pitfall is undervaluing assets on the Inventory. Executors sometimes list property at outdated or estimated values without professional input. The court may accept reasonable estimates for personal items, but real estate, business interests, and investment accounts typically need current, defensible valuations.

Also, many executors forget that filing obligations continue until the estate is formally closed. Even after paying bills and distributing assets, you must submit a final accounting and request a discharge from the court. Without that, you remain legally responsible for the estate. Our page on estate administration deadlines walks through each phase and its associated paperwork.

Do I need a lawyer to handle these filings?

Massachusetts doesn’t require executors to hire an attorney, but many choose to especially if the estate includes real estate, complex assets, or potential disputes. A lawyer can help ensure forms are completed correctly and filed on time, which reduces the risk of errors that could delay settlement.

That said, if the estate is straightforward (e.g., a bank account, a car, and no debts), you may manage the process yourself using court-provided forms and resources. Just be sure to double-check every requirement. The Massachusetts Probate and Family Court website offers free guides and sample forms, and the Department of Revenue provides clear instructions for estate tax filings (Massachusetts DOR).

Where can I find reliable guidance on what to file and when?

Start with the official court forms and checklists, but also look for practical summaries that translate legal language into plain steps. For instance, understanding how inheritance documentation ties into your filing duties can prevent gaps in reporting. Our resource on inheritance documentation guidelines explains how deeds, beneficiary designations, and joint accounts affect what you report and what you don’t.

And if you want a single reference that maps out all major executor deadlines in order, including both court and tax filings, see our detailed timeline in Massachusetts executor filing obligations.

Before you file anything, do this:

  1. Get multiple copies of the death certificate (you’ll need them for banks, insurers, and government agencies)
  2. Locate the original will and any trust documents
  3. Open an estate bank account to manage funds separately from your personal finances
  4. Make a preliminary list of assets and debts even before filing the Inventory
  5. Mark all key deadlines on your calendar: petition filing, Inventory, tax returns, final accounting

Staying organized from day one makes meeting your Massachusetts executor filing obligations far less stressful and helps you fulfill your responsibilities without unnecessary delays or risks.