Most of what an adult child needs to know about Massachusetts estate and incapacity planning concentrates in a few documents and one giant tax issue: the $2M state estate-tax cliff, the most punitive state estate-tax structure in the US.
The four documents to have in place this year
1. Durable Power of Attorney
Massachusetts uses a state-specific Durable POA under Mass. Gen. Laws ch. 190B §5-501 et seq..1 The POA should be:
- Durable— survives your parent’s incapacity.
- Signed by your parent before a notary; specific witness requirements depend on authorities granted.
- Drafted with care around “hot powers” — gifts, beneficiary changes, trust amendments — which require explicit grants.
2. Health Care Proxy
Massachusetts treats medical decision-making distinctively. The Health Care Proxy under Mass. Gen. Laws ch. 201D is the primary instrument.2 The proxy names a health-care agent to make medical decisions when your parent cannot communicate.
Notable Massachusetts feature: traditional living wills are not legally binding in Massachusetts in the way they are in many states. Instructions about end-of-life care should be communicated to the Health Care Agent through the proxy form and supplementary documents; the agent then has authority to act on them. Most Massachusetts elder-law attorneys recommend a detailed Health Care Proxy plus a Massachusetts MOLST form for residents in care facilities.
3. Last Will and Testament
Massachusetts wills are governed by the Massachusetts Uniform Probate Code (MUPC), adopted 2012, codified at Mass. Gen. Laws ch. 190B. The will must be signed by the testator and witnessed by two competent witnesses. Massachusetts recognizes self-proving affidavits.
4. Revocable Living Trust
A revocable trust is often the right tool in Massachusetts for two big reasons: probate avoidance, and Massachusetts estate-tax planning. Properly drafted credit-shelter and marital-deduction trust provisions can preserve both spouses’ $2M exemptions, effectively raising the couple’s combined Massachusetts exemption to $4M.3 Without the trust structure, the surviving spouse loses the first-to-die spouse’s exemption.
The Massachusetts $2M estate-tax cliff
Massachusetts is one of 12 states (plus DC) with a state estate tax. The Massachusetts exemption is $2M per individual— the lowest in the country — and Massachusetts is one of only two states (with Oregon) that taxes the entire estate from dollar one once the threshold is crossed, rather than just the amount above the exemption.4
A practical example:
- $1.9M estate: $0 Massachusetts estate tax (under threshold).
- $2.1M estate: Massachusetts taxes the full $2.1M, not just the $100K over. Estimated MA estate tax: ~$100,000+.
Rates are graduated from 0.8% on the lowest bracket to 16% on amounts above $10.04M. For Boston-metro families with a house, a 401(k), and a brokerage account, crossing $2M is not unusual — particularly with the home-value appreciation of recent decades.
Probate in Massachusetts: the MUPC
Massachusetts adopted the Uniform Probate Code in 2012 (codified at Mass. Gen. Laws ch. 190B), which streamlined what had been a notoriously slow probate process.5 Three procedure tracks:
- Voluntary Administration. For estates where personal property is $25,000 or less (excluding one motor vehicle). Filed in the Probate and Family Court but minimally supervised.
- Informal Probate. The default for most uncontested estates. Filed with limited judicial supervision; typically resolves in months.
- Formal Probate. Court-supervised, used for contested or complex estates.
Even with the MUPC streamlining, probate-avoidance planning — beneficiary designations, joint tenancy used carefully, and revocable trusts — remains the higher- leverage move for most families, particularly because the trust also enables the estate-tax planning above.
The Massachusetts elective share
Massachusetts law gives a surviving spouse the right to take an elective share of the deceased spouse’s estate regardless of what the will says. The Massachusetts elective-share rules under Mass. Gen. Laws ch. 191 §15 are complex and depend on the existence of children and the size of the estate; the surviving spouse can choose between the will’s provisions and a statutory share that includes both income and a portion of the residue.6 Massachusetts elective share planning is its own specialty; most second marriages benefit from a prenuptial agreement and careful trust drafting.
No state inheritance tax
Massachusetts has no inheritance tax. Only six US states do: Iowa (phasing out), Kentucky, Maryland, Nebraska, New Jersey, and Pennsylvania.
If your parent moved to Massachusetts from another state
Out-of-state wills are generally valid in Massachusetts if valid where executed, but a Massachusetts review is wise:
- Out-of-state POAs are honored but may face friction at Massachusetts banks. A Massachusetts-drafted POA reduces friction.
- Estate plans drafted in states without an estate tax almost never anticipate the Massachusetts $2M cliff.
- Living wills from other states may not have force in Massachusetts — replace with a Massachusetts Health Care Proxy.
What to do this quarter
- Locate (or create) your parent’s four documents: Durable POA, Health Care Proxy, Will, and (if appropriate) Revocable Living Trust.
- If your parent’s net worth approaches or exceeds $2M (including home equity, retirement accounts, and life-insurance death benefit), schedule a Massachusetts estate-tax planning consultation. This is the highest- leverage planning step for most MA families.
- Audit beneficiary designations.
- For our companion content on MassHealth planning and long-term-care funding, see the Massachusetts Medicaid guide.