Key answer: There is no percentage cap in Massachusetts, but no fee at all may be charged until rent is 30 or more days overdue (MGL ch.186 §15B). Rent must be 30 days past due before any late fee may be charged.
| Rule | Detail |
|---|---|
| Fee cap | No fee until rent is 30+ days overdue; must be reasonable |
| Grace period | 30 days |
| Must be in lease? | Required — no clause, no fee |
| Source | MGL ch.186 §15B |
Massachusetts law is unusual: a landlord cannot charge any late fee until rent is 30 or more days overdue (MGL ch.186 §15B). There is no percentage cap, but the fee must be stated in the lease and be reasonable.
What is the maximum late fee a landlord can charge in Massachusetts?
There is no percentage cap in Massachusetts, but no fee at all may be charged until rent is 30 or more days overdue (MGL ch.186 §15B).
When can a Massachusetts landlord charge a late fee?
Rent must be 30 days past due before any late fee may be charged.
Does the late fee have to be in the lease in Massachusetts?
Yes. The fee must be stated in the lease, and it still cannot be charged until rent is 30 days overdue.
Can a Massachusetts landlord charge a daily late fee?
Only if the lease allows it and the total charge stays within the legal cap — a daily fee cannot be used to get around the limit.
What happens if a Massachusetts landlord charges an illegal late fee?
A fee above the legal limit can be challenged; courts may void the fee or the entire clause as unconscionable.
Can a Massachusetts landlord charge a late fee for rent 10 days overdue?
No. State law prohibits any late fee until rent is 30 or more days overdue (MGL ch.186 §15B).
We have not confirmed a statewide rent-increase cap for Massachusetts. Notice requirements depend on the lease type (month-to-month vs. fixed term) — check your lease and local rules.
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Not legal advice. Verify against your lease and local rules.
Calculate your Massachusetts late fee