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Massachusetts divorce: Dividing 401(k)s and unvested options

On Behalf of | Oct 21, 2026 | Property Division

If you or your spouse has a 401(k) and unvested stock options, both can be divided in a Massachusetts divorce. A judge decides each spouse’s share by weighing factors such as the length of the marriage and each spouse’s income and earning ability, so the split is fair but not always equal.

A 401(k) also needs its own court order before any money moves, and knowing how each asset works can help you plan before negotiations begin.

Understanding how Massachusetts divides unvested stock options

Stock options give an employee the right to buy company shares at a set price, and they often vest, meaning become usable, only after years of continued work. Even so, Massachusetts courts can divide options that have not vested, because they may reward work done during the marriage.

A judge may use a formula called the time rule, which compares how long the employee held the options before the marriage ended with the full period until they vest. Because future value is uncertain, the other spouse may receive a share if and when the options pay out. Courts may treat other awards, such as restricted stock, differently, so the terms of your grant matter.

Dividing a 401(k) with a QDRO

A divorce judgment says who gets what, but the 401(k) plan follows its own paperwork. That paperwork is a court order called a QDRO, short for qualified domestic relations order, which tells the plan how much to pay the other spouse. The spouse who receives the money generally owes income tax on it, but may be able to move it into a retirement account to delay the tax.

What to gather before you negotiate

Grant agreements, vesting schedules and recent plan statements show what you or your spouse holds and when each piece becomes available. Because equity pay and retirement accounts can shape a settlement for years, a family law attorney who handles complex retirement assets can help you understand what is divisible, what it may be worth and what to weigh before you sign.