State Guide
Massachusetts Privacy & Data Security Laws
Every statute below can apply to a business handling Massachusetts residents' data, depending on your revenue, the number of Massachusetts consumers you process, and what kind of data you collect. This is a general reference, not a determination for your specific business — run the full questionnaire to see which of these actually apply to you.
Data Security & Breach Notification · 1
Requires a comprehensive Written Information Security Program (WISP) — one of the most prescriptive state security regulations. Applies regardless of company size whenever you hold covered personal information about a resident of this state.
On the Horizon — Proposed, Not Yet Law · 1
The single most likely state in this list to have already changed status — it cleared both chambers and is deep in the reconciliation process. Worth checking malegislature.gov directly for a signature before assuming either way.
Status: Senate passed 40-0 (Sep 25, 2025); House passed 146-0 (Jun 4, 2026); Senate did not concur with House changes; a conference committee was appointed Jun 17, 2026 and, as of the most recent evidence found, had not yet reported out a reconciled bill or reached the Governor's desk.