Calculate Massachusetts spousal support with the statutory formula under M.G.L. c.208 §§ 48–55 — amount, duration rules, and a worked example.
| How amount is set | Statutory formula |
|---|---|
| Formula / practice | General term alimony generally 30-35% of the difference between the spouses’ gross incomes; duration is a percentage of marriage length by bracket, indefinite after 20 years. |
| Statute | M.G.L. c.208 §§ 48–55 |
| Parameters verified | 2026-07 |
Result: $1,500 - $1,750 per month (reference range) - typical duration: 8.4 years (70% of marriage length)
Massachusetts uses a statutory guideline under M.G.L. c.208 §§ 48–55. General term alimony generally 30-35% of the difference between the spouses’ gross incomes; duration is a percentage of marriage length by bracket, indefinite after 20 years.
A percentage of marriage length by bracket: 50% (under 5 yrs), 60% (5-10), 70% (10-15), 80% (15-20), indefinite over 20 years.
Alimony typically ends on the recipient’s remarriage or either party’s death, and can be modified or terminated on the recipient’s cohabitation or a substantial change in circumstances, per M.G.L. c.208 §§ 48–55 and case law. Agreements can make support non-modifiable by contract.
For divorces finalized after 2018, alimony is not deductible by the payor and not taxable to the recipient under federal law. State income tax treatment can differ - check current state rules.
Estimate only — not legal advice. Based on Massachusetts law (M.G.L. c.208 §§ 48–55), last verified 2026-07. Courts may deviate. Consult a family law attorney for your situation.