Is there a legal limit on late fees in Massachusetts?

No statutory cap (see reasonableness standard and notes). Once the 30-day threshold passes, no dollar or percentage cap applies; general contract principles (fees must be a reasonable pre-estimate of damages, not a penalty) and the Attorney General's 940 CMR 3.17 unfair-practices regulations police excess.

Does a late fee have to be written into the lease in Massachusetts?

Yes — in Massachusetts a late fee must be stated in the lease.

Can a landlord charge a daily late fee in Massachusetts?

Not before day 30. Any interest or penalty structure, daily or otherwise, is void to the extent it accrues within 30 days of the due date (§ 15B(1)(c)).

What late fees can a landlord charge in Massachusetts?

Verified October 1, 2026 All Massachusetts topics →

Legislative changes ahead — not yet in force. This page reflects the law in force today. The following measure would change Massachusetts's landlord-tenant law:

H.2328 and S.1447 / 'An Act enabling cities and towns to stabilize rents and protect tenants' (194th General Court, 2025-2026) — Would repeal G.L. c. 40P (the Massachusetts Rent Control Prohibition Act) and let a city or town limit annual rent increases to the change in the Consumer Price Index or 5 percent, whichever is lower, and require just cause for evictions. A second House bill, H.1477 ('An Act enabling local options for tenant protections'), would rewrite chapter 40P as a local-option Tenant Protection Act. Status: Not enacted. H.2328 was sent to a study order on August 13, 2026 and H.1477 on September 21, 2026. The Senate bill, S.1447, was reported favorably by its committee on July 13, 2026 and referred to Senate Ways and Means. A separate initiative petition for a statewide limit on rent increases (H.5008) received no vote in the Legislature and is not among the nine questions on the November 3, 2026 state ballot. Chapter 40P remains fully in force. (checked October 1, 2026).

Massachusetts law forbids any late fee, interest, or penalty on unpaid rent until the rent is a full 30 days overdue, and any lease clause purporting to charge earlier is void and unenforceable.

Cited to G.L. c. 186, § 15B (1)(c), (8) and 2 more cited sources · Verified October 1, 2026

The statute caps the timing, not the amount: once rent is 30 days late a lease-based fee may be charged, subject to general limits on contractual penalties and the consumer-protection regulations. A fee must be in the lease to be collected at all, and because putting a conflicting fee provision in a lease and trying to enforce it is itself a security-deposit forfeiture trigger under § 15B(6)(c), an illegal early late-fee clause can cost a landlord the entire deposit. Note that the 14-day nonpayment notice to quit under § 12 operates independently — a landlord can start eviction well before day 30 even though no fee may be charged.

Massachusetts late fees at a glance

Statutory cap	No statutory cap (see reasonableness standard and notes)
Mandatory grace period	30 days
Must be in the lease	Yes
Daily fees	Not before day 30. Any interest or penalty structure, daily or otherwise, is void to the extent it accrues within 30 days of the due date (§ 15B(1)(c)). After 30 days no statute caps the amount, but penalty-style fees remain subject to liquidated-damages doctrine and c. 93A unfair-practice limits.
Reasonableness standard	Once the 30-day threshold passes, no dollar or percentage cap applies; general contract principles (fees must be a reasonable pre-estimate of damages, not a penalty) and the Attorney General's 940 CMR 3.17 unfair-practices regulations police excess.

Cite this page: "Landlord Atlas, Massachusetts Late Fee Laws (verified October 1, 2026), landlordatlas.com/laws/late-fees/massachusetts/" — free to cite and quote with a link (how these records are verified). Everything above is cited in the citations section below.

Check a late fee against the Massachusetts rules — free, no signup, built on the same verified Massachusetts law as this page.

Notes and caveats

The statute caps timing, not amount — The 30-day grace period comes from § 15B(1)(c); no dollar or percentage cap is listed because the statute regulates when a fee may accrue, not how much it may be.
An early late-fee clause can forfeit the entire deposit — Putting a conflicting fee provision in the lease and attempting to enforce it forfeits the security deposit under § 15B(6)(c) — the practical teeth of the 30-day rule.
The 30-day fee bar and the 14-day eviction notice are separate clocks — A common point of confusion: no fee may be charged until rent is 30 days late, but the 14-day nonpayment notice to quit runs on its own independent clock.
A federal shutdown suspends late fees for impacted federal workers — Under G.L. c. 239, § 17(e) (added by St. 2025, c. 73, § 54), a landlord may not impose a late fee for nonpayment of rent — or furnish the nonpayment to a consumer reporting agency — where the tenant is an impacted federal worker who, within 30 days of the missed payment, gives the landlord notice and documentation that the nonpayment results from a federal government shutdown. Since July 1, 2026, a partial shutdown also triggers the section (St. 2026, c. 137, § 84 changed the trigger from 'all' to 'any' non-essential federal functions ceasing). Section 17 is not yet displayed in the online General Laws; the session laws are the operative citations.

Common questions: Massachusetts late fees

Each answer is the verified value from the table above, restated as a direct answer. Free to quote with a link to this page.

Is there a legal limit on late fees in Massachusetts?: No statutory cap (see reasonableness standard and notes). Once the 30-day threshold passes, no dollar or percentage cap applies; general contract principles (fees must be a reasonable pre-estimate of damages, not a penalty) and the Attorney General's 940 CMR 3.17 unfair-practices regulations police excess.
Is there a grace period before rent is late in Massachusetts?: 30 days.
Does a late fee have to be written into the lease in Massachusetts?: Yes — in Massachusetts a late fee must be stated in the lease.
Can a landlord charge a daily late fee in Massachusetts?: Not before day 30. Any interest or penalty structure, daily or otherwise, is void to the extent it accrues within 30 days of the due date (§ 15B(1)(c)).

Citations

G.L. c. 186, § 15B · (1)(c), (8) (verified 2026) Official source
St. 2025, c. 73, § 54 (G.L. c. 239, § 17(e)) (verified 2026) Official source
St. 2026, c. 137, § 84 (verified 2026) Official source

How this record was verified: Direct read of statute text on the official Massachusetts General Court site (malegislature.gov) on October 1, 2026: G.L. c. 186, § 15B read in full (current text, including the St. 2024, c. 150, § 50 fee-in-lieu proviso and the St. 2025, c. 9, §§ 54-55 amendments effective August 1, 2025), c. 186, § 12 read in full, the c. 186 section list, c. 40P, §§ 1-5, c. 112, § 87DDD1/2, and each session law the record cites (St. 2024, c. 150; St. 2025, cc. 9 and 73; St. 2026, c. 137). The Attorney General's regulation 940 CMR 3.17 and the index of the Executive Office of Housing and Livable Communities' regulations (760 CMR) were read on mass.gov the same day. G.L. c. 239, § 17 is not yet displayed in the online General Laws and is cited to its session laws.