Massachusetts General Laws
Article II - Intestacy, Wills and Donative Transfers
Section 2-507 - Revocation by Writing or by Act

Section 2–507. [Revocation by Writing or by Act.]
(a) A will or any part thereof is revoked:
(1) by executing a subsequent will that revokes the previous will or part expressly or by inconsistency; or
(2) by performing a revocatory act on the will, if the testator performed the act with the intent and for the purpose of revoking the will or part or if another individual performed the act in the testator's conscious presence and by the testator's direction. For purposes of this paragraph, ''revocatory act on the will'' includes burning, tearing, canceling, obliterating, or destroying the will or any part of it.
(b) If a subsequent will does not expressly revoke a previous will, the execution of the subsequent will wholly revokes the previous will by inconsistency if the testator intended the subsequent will to replace rather than supplement the previous will.
(c) The testator is presumed to have intended a subsequent will to replace rather than supplement a previous will if the subsequent will makes a complete disposition of the testator's estate. If this presumption arises and is not rebutted, the previous will is revoked; only the subsequent will is operative on the testator's death.
(d) The testator is presumed to have intended a subsequent will to supplement rather than replace a previous will if the subsequent will does not make a complete disposition of the testator's estate. If this presumption arises and is not rebutted, the subsequent will revokes the previous will only to the extent the subsequent will is inconsistent with the previous will; each will is fully operative on the testator's death to the extent they are not inconsistent.

Structure Massachusetts General Laws

Massachusetts General Laws

Part II - Real and Personal Property and Domestic Relations

Title II - Descent and Distribution, Wills, Estates of Deceased Persons and Absentees, Guardianship, Conservatorship and Trusts

Chapter 190b - Massachusetts Uniform Probate Code

Article II - Intestacy, Wills and Donative Transfers

Section 2-101 - Intestate Estate

Section 2-102 - Share of Spouse

Section 2-103 - Share of Heirs Other Than Surviving Spouse

Section 2-105 - No Taker

Section 2-106 - Representation

Section 2-107 - Kindred of Half Blood

Section 2-108 - Afterborn Heirs

Section 2-109 - Advancements

Section 2-110 - Debts to Decedent

Section 2-111 - Alienage

Section 2-112 - Dower and Curtesy Abolished

Section 2-113 - Individuals Related to Decedent Through Two Lines

Section 2-114 - Parent and Child Relationship

Section 2-301 - Entitlement of Spouse; Premarital Will

Section 2-302 - Omitted Children

Section 2-401 - Applicable Law

Section 2-403 - Exempt Property

Section 2-404 - Discretionary Family Allowance

Section 2-405 - Source, Determination, and Documentation

Section 2-501 - Who May Make Will

Section 2-502 - Execution of Wills

Section 2-504 - Self-Proved Will

Section 2-505 - Who May Witness

Section 2-506 - Choice of Law as to Execution

Section 2-507 - Revocation by Writing or by Act

Section 2-508 - Revocation by Change of Circumstances

Section 2-509 - Revival of Revoked Will

Section 2-510 - Incorporation by Reference

Section 2-511 - Testamentary Additions to Trusts

Section 2-512 - Events of Independent Significance

Section 2-513 - Separate Writing Identifying Devise of Certain Types of Tangible Property

Section 2-514 - Contracts Concerning Succession

Section 2-515 - Deposit of Will With Court in Testator's Lifetime

Section 2-516 - Duty of Custodian of Will; Liability

Section 2-517 - Penalty Clause for Contest

Section 2-601 - Scope

Section 2-602 - Will May Pass All Property and After–acquired Property

Section 2-603 - Anti-Lapse; Deceased Devisee; Class Gifts

Section 2-604 - Failure of Testamentary Provision

Section 2-605 - Increase in Devised Securities; Accessions

Section 2-606 - Nonademption of Specific Devises; Unpaid Proceeds of Sale, Condemnation, or Insurance; Sale by Conservator or Agent

Section 2-607 - Nonexoneration

Section 2-608 - Exercise of Power of Appointment

Section 2-609 - Ademption by Satisfaction

Section 2-610 - Annuities

Section 2-701 - Scope

Section 2-702 - Requirement of Survival

Section 2-703 - Choice of Law as to Meaning and Effect of Donative Dispositions

Section 2-704 - Taxes on Qtips

Section 2-705 - Class Gifts Construed to Accord With Intestate Succession

Section 2-706 - Life Insurance; Retirement Plan; Account With Pod Designation; Transfer-on-Death Registration; Deceased Beneficiary

Section 2-707 - Survivorship With Respect to Future Interests Under Terms of Trust; Substitute Takers

Section 2-708 - Class Gifts to ''descendants'', ''issue'', or ''heirs of the Body''; Form of Distributions if None Specified

Section 2-709 - Representation; per Capita at Each Generation; per Stirpes

Section 2-710 - Worthier Title Doctrine Abolished

Section 2-711 - Future Interests in ''heirs'' and Like

Section 2-801 - Disclaimer of Property Interests

Section 2-802 - Effect of Divorce, Annulment, and Decree of Separation

Section 2-803 - Effect of Homicide on Intestate Succession, Wills, Trusts, Joint Assets, Life Insurance, and Beneficiary Designation

Section 2-804 - Revocation of Probate and Nonprobate Transfers by Divorce; No Revocation by Other Changes of Circumstances

Section 2-901 - Statutory Rule Against Perpetuities

Section 2-902 - When Nonvested Property Interest or Power of Attorney Appointment Created

Section 2-903 - Reformation

Section 2-904 - Exclusions From Statutory Rule Against Perpetuities

Section 2-905 - Prospective Application

Section 2-906 - Supersession