MA · Renter law
Can my landlord charge a late fee in Massachusetts?
Most states let a late fee attach within a few days. Massachusetts makes landlords wait a full month, so the “$50 after the 5th” line printed in many Boston leases is not enforceable. This guide covers the rule, its limits, and how to push back.
Updated September 23, 2026 · 6min read · How we check the law
The short answer
Only after rent is 30 days late. Under M.G.L. c. 186, § 15B, a Massachusetts landlord may not impose any penalty or interest for late rent until the rent is a full 30 days overdue. A lease that charges a late fee on day 5 or day 10 is unenforceable on that point, no matter what you signed. One limit: once the 30 days run, Massachusetts sets no dollar cap on the fee itself, so the amount only has to be reasonable.
The 30-day rule, exactly as written
Buried in the same statute that governs security deposits is one sentence that most Massachusetts renters, and a lot of Massachusetts landlords, have never read.
That makes Massachusetts one of the strictest late-fee states in the country on timing. New York gives renters a 5-day grace period; Texas gives two full days. Massachusetts gives thirty, and it isn’t a “grace period” a lease can shorten. It’s a floor written into the statute, and § 15B can’t be waived by contract.
What Boston-area leases say anyway
This line appears, in some form, in many local leases:
“If rent is not received by the fifth (5th) day of the month, Tenant shall pay a late charge of $50.00, plus $5.00 per day thereafter, as additional rent.”
Every part of that clause before day 30 is unenforceable: the day-5 trigger, the daily accrual, and the “additional rent” label (renaming a penalty doesn’t change what it is). Some landlords use it knowingly, betting you won’t check; many inherited it from a form lease and believe it works. Either way, the words in the lease don’t make it collectible. Signing a lease with an illegal term in it doesn’t validate the term.
The limit: no dollar cap after day 30
This law protects the timing, not the amount. Once rent is more than 30 days overdue, Massachusetts has no statute limiting the late fee to a percentage or flat maximum. A truly punitive number could still be attacked as an unreasonable penalty under general contract law, but there’s no bright line to point at.
Practically, though, the 30-day mark matters for a different reason: a landlord doesn’t wait a month to act on unpaid rent. A 14-day notice to quit for nonpayment can arrive far earlier. The late-fee rule protects you from penalty charges. It is not a 30-day free pass on paying rent, and treating it as one invites a much bigger problem than a $50 fee.
What to do if you’re charged early
- Before signing: you don’t have to negotiate the clause out, because it’s void on its own. But flagging it politely (“I know § 15B doesn’t allow fees before day 30. Can we correct that line?”) tells you whether you’re renting from someone who follows the rules once they know them.
- If billed: decline in writing, cite M.G.L. c. 186, § 15B, and pay the rent itself as usual. Keep the paper trail.
- If it was deducted from your deposit: that turns a small illegal fee into a deposit violation. See our Massachusetts security deposit guide for the 30-day return rule and the triple-damages provision that gives you real leverage.
- If they insist: small claims court handles up to $7,000 without a lawyer, and an unlawful fee demanded in writing is strong evidence.
Questions renters ask
My lease says rent is late after a 5-day grace period. Is that legal?
The lease can call rent “late” whenever it wants. What it can’t do is charge you money for it before day 30. A 5-day grace period followed by a fee is the classic unenforceable version. A 5-day grace period followed by nothing but a reminder letter is fine.
Can the landlord charge interest instead of a flat fee?
No. The statute bars “any interest or penalty” before the 30-day mark. Renaming the charge interest, an administrative cost, or a processing charge doesn’t restart the clock.
I paid on day 12 and got billed a $75 late fee. Do I owe it?
Under § 15B, no. Rent that’s 12 days late hasn’t reached the point where any penalty may attach. Decline in writing, cite the statute, and keep proof of when you paid. A landlord who later deducts an unlawful fee from your security deposit risks triple damages under the deposit statute.
Is there any limit on the fee once rent is 30 days late?
Massachusetts sets no specific dollar cap after day 30. That’s the trade-off in this law. An extreme fee could still be challenged as an unreasonable penalty, but there’s no bright-line percentage like Texas or New York has. Late more than a month, and the fee itself is usually the least of the problem: a 14-day notice to quit for nonpayment can arrive well before then.
Can a late fee be taken out of my last month’s rent or deposit?
Deductions from a security deposit are limited to unpaid rent, certain agreed tax increases, and damage beyond normal wear. An unlawful early late fee is none of those. Watch for leases that fold “fees” into the definition of rent to sneak them into deductions; the label doesn’t change what § 15B allows.
Sources & statutes
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LeasePatrol provides rental law information, not legal advice, and is not a law firm. Statute summaries here describe the law as of the “updated” date above; if you're facing an eviction or a lawsuit, talk to a tenant lawyer or your local legal aid office.