How to Fill Out a Maryland Inheritance Tax Form

Losing a loved one is hard enough without having to figure out tax paperwork on top of everything. But if you're the personal representative or heir of someone who owned property in Maryland, filling out the Maryland inheritance tax form isn't optional it's required before you can transfer assets. This guide walks you through the entire process, step by step, so you can handle it correctly and avoid delays.

Maryland is one of the few states that still collects an inheritance tax. If the deceased owned property in Maryland, the state expects a tax return to be filed, regardless of the estate's size. Getting it wrong can stall the probate process, cost you money in penalties, or trigger an audit. Understanding how to fill out the form properly protects both you and the estate.

What Is the Maryland Inheritance Tax Form?

The Maryland inheritance tax form is officially known as Form MET-1 (Maryland Estate Tax Return) or the inheritance tax reporting form used by the Register of Wills in the county where the decedent lived or owned property. It reports the total value of the estate and calculates any tax owed to the state of Maryland.

Maryland charges both an estate tax and a separate inheritance tax. The inheritance tax applies to property passed to certain beneficiaries. The rate is typically 10%, though close relatives like spouses, children, parents, siblings, and grandparents are exempt from the inheritance tax in many cases.

You'll use this form to report real estate, bank accounts, investments, vehicles, personal belongings, and other assets the deceased owned at the time of death.

Who Needs to File the Maryland Inheritance Tax Form?

The responsibility falls on the personal representative (also called the executor or administrator) of the estate. If no personal representative has been appointed, any person in possession of the decedent's property may need to file.

You must file if:

The deceased owned real property or tangible personal property in Maryland
The estate has a gross value above the Maryland estate tax exemption threshold
You need to transfer property titles, bank accounts, or other assets to beneficiaries
The Register of Wills in the county requires it to close the estate

If you're an out-of-state beneficiary, you may have additional paperwork requirements. Out-of-state beneficiaries face extra filing steps that are worth reviewing before you begin.

What Documents Do You Need Before You Start?

Gather these items before filling out the form. Having everything ready prevents mistakes and repeated trips to the Register of Wills office.

Certified copy of the death certificate – You'll need at least one original; some counties require two.
The original will (if one exists) – Filed with the Register of Wills in the county of residence.
Inventory of assets – A full list of everything the deceased owned, with fair market values as of the date of death.
Real estate appraisals or assessments – Maryland uses fair market value, not tax-assessed value.
Financial statements – Bank accounts, brokerage accounts, retirement accounts, and life insurance policies (if payable to the estate).
List of debts and expenses – Outstanding bills, funeral costs, legal fees, and administrative expenses.
Beneficiary information – Full names, addresses, Social Security numbers, and relationship to the deceased.
Prior gift tax returns – If the deceased made large gifts during their lifetime.

The type of inheritance paperwork you need may vary depending on the county and the assets involved.

Step-by-Step: How to Fill Out the Maryland Inheritance Tax Form

Step 1: Obtain the Correct Form

Get the form from the Register of Wills office in the Maryland county where the decedent resided or owned property. You can also download forms from the Maryland Register of Wills website or the Maryland Register of Wills portal. Make sure you have the most current version of the form older versions may not be accepted.

Step 2: Fill Out the Decedent's Information

Start with the basic details at the top of the form:

Full legal name of the deceased
Date of death
Social Security number
Last known address
County of residence
Whether a will exists (testate) or not (intestate)

Double-check every name and number. A wrong Social Security number or misspelled name is one of the most common reasons forms get rejected.

Step 3: List All Estate Assets and Their Values

This is the most time-consuming part. You must report every asset the deceased owned at the time of death, valued at fair market value on the date of death.

Common asset categories include:

Real estate – Homes, land, rental properties, commercial buildings
Bank accounts – Checking, savings, CDs, money market accounts
Investment accounts – Stocks, bonds, mutual funds, brokerage accounts
Retirement accounts – IRAs, 401(k)s (only those payable to the estate)
Life insurance – Policies payable to the estate, not individual beneficiaries
Vehicles and boats – Cars, motorcycles, RVs, watercraft
Personal property – Jewelry, art, furniture, collectibles, firearms
Business interests – Ownership in LLCs, partnerships, or sole proprietorships
Money owed to the deceased – Promissory notes, loans made to others

For real estate, use an appraisal or the assessed value from the State Department of Assessments and Taxation (SDAT). For financial accounts, use the balance on the date of death. For personal property, use reasonable fair market value you don't need professional appraisals for everyday household items, but you should for high-value items.

Step 4: Deduct Allowable Debts and Expenses

Maryland allows you to subtract certain costs from the gross estate before calculating the tax. These include:

Funeral and burial expenses
Outstanding debts of the deceased (mortgages, credit cards, medical bills)
Administrative expenses (attorney fees, personal representative fees, court costs)
Property maintenance costs during estate administration

Keep receipts and documentation for every deduction. The Register of Wills may ask for proof.

Step 5: Identify Beneficiaries and Their Relationship to the Decedent

List every person or entity receiving property from the estate. For each beneficiary, note:

Full legal name
Address
Social Security number or tax ID
Relationship to the deceased (spouse, child, sibling, friend, etc.)
What they're receiving and its value

The relationship matters because Maryland's inheritance tax exemption depends on it. Transfers to a spouse, child, parent, grandparent, sibling, stepchild, or stepparent are generally exempt from the 10% inheritance tax. Transfers to nieces, nephews, friends, and more distant relatives are usually not exempt.

Step 6: Calculate the Tax Owed

After listing assets and subtracting deductions, the form walks you through the tax calculation:

Gross estate value – Total of all assets
Minus allowable deductions – Debts, expenses, and exemptions
Equals taxable estate
Apply the inheritance tax rate – 10% on taxable transfers to non-exempt beneficiaries

Maryland also has a separate estate tax that applies to estates exceeding the state exemption threshold (currently $5 million for deaths in 2024). The estate tax and inheritance tax are calculated differently, and you may owe one, both, or neither.

If the estate tax applies, you may also need to file the estate tax return. Executors can follow these estate tax return filing instructions to handle that part correctly.

Step 7: Review and Sign the Form

Before submitting, review every section carefully. Check that:

All asset values are accurate and based on the date of death
Deductions are supported by documentation
Beneficiary information is complete and correct
Math adds up recheck all totals
The personal representative has signed and dated the form

Many people make avoidable errors at this stage. Reviewing common mistakes on Maryland inheritance tax forms before you submit can save weeks of delay.

Step 8: File the Form and Pay Any Tax Due

Submit the completed form to the Register of Wills in the appropriate county. Filing deadlines matter knowing when the Maryland inheritance tax is due helps you avoid late penalties.

Payment options typically include:

Check made payable to the Register of Wills
Cash (in person only, at some offices)
Certified funds

If the estate doesn't have enough liquid assets to pay the tax immediately, you may be able to request an installment plan or file a bond with the court.

What Happens After You File?

After the Register of Wills reviews and accepts the form:

You'll receive a tax clearance certificate confirming the inheritance tax has been satisfied.
This certificate is required before you can transfer real estate titles, close bank accounts, or distribute assets.
If there's a discrepancy, the office will contact you for corrections or additional documentation.

Keep copies of everything you file. You may need them for federal tax returns, beneficiary disputes, or future reference.

Common Mistakes That Delay the Process

These errors come up repeatedly and can set your filing back by weeks or months:

Undervaluing real estate – Maryland expects fair market value, not the county tax assessment. Get a proper appraisal.
Forgetting to report assets – Every account, vehicle, and piece of property must be listed, even small ones.
Wrong beneficiary relationships – Misclassifying a niece as a daughter, for example, can result in incorrect tax calculations.
Missing signatures – The personal representative must sign. If there are co-representatives, all must sign.
Filing in the wrong county – File where the decedent lived, not where you live.
Ignoring the deadline – Late filings can result in penalties and interest.

For a deeper look at what to watch out for, this list of common mistakes covers the issues most frequently flagged by Maryland Register of Wills offices.

Tips to Make the Process Easier

Start early. Don't wait until the deadline approaches. Gathering documents takes longer than most people expect.
Use a spreadsheet. Track every asset, its value, and who receives it. This makes filling out the form much faster.
Get professional help if the estate is complex. Estates with business interests, multiple properties, or assets in other states benefit from a Maryland probate attorney or CPA.
Contact the Register of Wills office with questions. County staff can clarify form requirements and filing procedures. They're usually helpful and accustomed to walking people through the process.
Keep originals separate from copies. File copies, keep originals in a safe place.

Checklist Before You File

✅ Obtained the correct, current form from the Register of Wills
✅ Gathered the death certificate, will, and all supporting documents
✅ inventoried all assets with fair market values as of the date of death
✅ Listed all debts and deductible expenses with receipts
✅ Identified every beneficiary with correct names, addresses, SSNs, and relationships
✅ Verified which beneficiaries are exempt from the 10% inheritance tax
✅ Calculated the tax owed (estate tax and inheritance tax separately)
✅ Reviewed the form for math errors, missing information, and correct signatures
✅ Confirmed the filing deadline and the correct county for submission
✅ Made copies of the completed form and all attachments for your records

Filing the Maryland inheritance tax form takes patience and attention to detail, but breaking it into steps makes it manageable. Take it one section at a time, verify your numbers, and don't hesitate to ask the Register of Wills office for help if something isn't clear.