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Statutes verified against primary state sources
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Every statute cited here was checked against the state's own published text before this page went live. Court decisions are quoted from the published opinion and linked to it, so you can read the original yourself.
Primary sourcesNot legal advice
Content verified against primary state statutes before publication Last updated: September 2026

Quick Summary - What You Need to Know

  • M.G.L. c. 186, § 15B(1)(c) says no lease may impose any interest or penalty for failure to pay rent until thirty days after that rent was due.
  • Under 940 CMR 3.17(6)(a) the same rule is a consumer-protection duty: charging sooner is an unfair or deceptive practice.
  • Section 15B fixes when a fee may start, not how large it may be, so the amount still comes from your lease's own terms.
  • M.G.L. c. 186, § 15B(8) makes any lease provision conflicting with § 15B, or any waiver of it, void as against public policy.
  • Our record finds no Boston ordinance capping a late fee or lengthening the state's 30-day rule.

Understanding the Late Fee Clause

30-day grace
Grace period before a late fee in Boston
Massachusetts bars any interest or penalty for late rent until 30 days after it was due, so in Boston the first question is not whether the fee is fair but whether it could be charged yet at all.

A late fee clause sets what your landlord can charge when rent lands after the due date. Massachusetts answers that question earlier than almost anywhere else, by fixing the day a charge is even allowed to exist.

M.G.L. c. 186, § 15B(1)(c) is a single sentence: no lease or other rental agreement may impose any interest or penalty for failure to pay rent until thirty days after that rent was due. The Attorney General's regulation at 940 CMR 3.17(6)(a) carries the same 30-day rule as an unfair or deceptive practice.

Because the statutory text was read from a faithful republisher rather than the Legislature's own published page. Confirm the current text of § 15B before you rely on the day count in a dispute.

What renters assume

Most renters assume the argument about a late fee is an argument about the amount - whether the number on the ledger is reasonable against the rent they pay.

What is actually true

In Boston the first argument is about the calendar. M.G.L. c. 186, § 15B(1)(c) allows no interest or penalty at all until thirty days after rent was due, so a fee dated before that is charged too early whatever its size.

Boston's 30-day figure is the longest on this chart by a wide margin. The next longest is Denver at 7 days; New York City, Seattle and Nashville sit at 5, Portland at 4 and Austin at 2.

In Los Angeles, Miami, Chicago, Phoenix and Atlanta the record shows no required grace at all, and for Philadelphia it shows no statute on the question. A fee that would already be running in most of these cities has not started yet in Boston.

Plain English Version

Massachusetts treats a late fee like a clock the lease is not allowed to start. Whatever your agreement says the charge is, the statute holds it off until rent has been unpaid for thirty days, and the Attorney General's regulation treats an earlier charge as a deceptive practice rather than a private billing dispute.

Clause decoder

Late Fee Clause Example - What the Wording Looks Like in Boston, MA

The sample clause below is real lease language - a court quoted it word for word, and then ruled on it. What the judge decided is at the bottom of this block.

Real clause - quoted in a published court opinion

Find the equivalent paragraph in your own lease and read the two side by side. The wording will differ; the moving parts rarely do.

you must pay your rent on or before the 1st day of each month (due date) with no grace period. . . . If you don't pay all rent on or before the 3rd day of the month, you'll pay an initial late charge of $75.00 plus a daily late charge of $15.00 per day after that date until paid in full.

Quoted from the published opinion in Cleven v. Mid-America Apartment Communities, Inc., 20 F.4th 171 (5th Cir. 2021). Judicial opinions are not subject to copyright; the lease language is reproduced in limited part for commentary under 17 U.S.C. § 107.

1

“the 1st day of each month (due date)”

The due date and the fee date are two different dates in Massachusetts, and only one of them belongs to your lease. A lease may still make rent due on the 1st; what it cannot do is attach a charge to that date. M.G.L. c. 186, § 15B(1)(c) is one sentence and it is absolute: no lease or other rental agreement shall impose any interest or penalty for failure to pay rent until thirty days after such rent shall have been due.

Tenant-favourable“Rent is due on the 1st; no interest or penalty attaches until the rent is thirty days overdue”
What this lease said“the 1st day of each month (due date)”
Landlord-favourable“Rent is due on the 1st, and Landlord may assess charges from the following day”
2

“with no grace period”

Massachusetts overrides this line rather than negotiating with it. The grace period runs whatever the paragraph says, and § 15B(8) makes any lease provision conflicting with § 15B, or any waiver of it, void and unenforceable as against public policy. That sits a long way outside the pack: four days in Oregon under ORS 90.260, seven in Colorado under C.R.S. 38-12-105, two in Texas under Tex. Prop. Code Sec. 92.019.

Under 940 CMR 3.17(6)(a) it is an unfair or deceptive practice to impose any interest or penalty for late payment of rent unless the payment is 30 days overdue, so a charge posted on day six is a consumer-protection question and not only a contract one.
Tenant-favourable“No late charge or interest may be imposed until the rent is thirty days overdue”
What this lease said“with no grace period”
Landlord-favourable“Tenant waives any grace period; a late charge attaches the day after the due date”
3

“you'll pay an initial late charge of $75.00”

Ask when before you ask how much. Section 15B fixes when a fee may start, not how large it may be, so the size of this figure comes from the lease's own terms. That ordering is the reverse of the argument the landlord won here: the Fifth Circuit put the weight on whether a fee is a reasonable estimate, while a Boston renter's first question is whether the charge could lawfully be imposed yet at all.

Tenant-favourable“A late charge of $50, assessed only after the rent is thirty days overdue”
What this lease said“you'll pay an initial late charge of $75.00”
Landlord-favourable“An initial late charge of $75.00, assessed if rent is not received by the 3rd”
4

“$15.00 per day after that date”

A daily meter is where the thirty-day rule bites hardest. Every day this clause counts between the fourth of the month and the day rent becomes thirty days overdue is a day on which no interest or penalty may be imposed at all, so the first entries a structure like this produces are charges the rule does not allow. A conflicting term is void, not trimmed, so the paragraph does not quietly shrink to fit.

A running fee is also not what ends a tenancy. For nonpayment by a tenant at will, M.G.L. c. 186, § 12 requires a 14-day notice to quit, and a tenant who has had no similar notice in the preceding 12 months keeps the tenancy by paying the full rent due within 10 days of receiving it. Under Boston's Housing Stability Notification Act (City of Boston Code, Ordinances, § 10-11) a landlord serving that notice must serve a copy on the city's Office of Housing Stability and attach the city's notice of basic housing rights and resources.
Tenant-favourable“No charge accrues for any period during which a charge may not lawfully be imposed”
What this lease said“$15.00 per day after that date”
Landlord-favourable“$15.00 for each day any balance remains unpaid, beginning on the 4th day of the month”
What the court did with it

The clause survived - and the reasoning is the part worth knowing. Tenants argued a landlord must actually work out its damages before setting a late fee. The Fifth Circuit disagreed: there is no requirement to go through that process, so long as the fee itself is a reasonable estimate. The burden sits on the fee's size, not on the landlord's paperwork.

Massachusetts settles this clause before the arithmetic starts: no lease may impose any interest or penalty for failure to pay rent until 30 days after the rent was due, and the Attorney General's regulations make charging one sooner an unfair or deceptive practice. Confirm the current text before relying on the figure, in: M.G.L. c. 186, § 15B(1)(c); 940 CMR 3.17(6)(a)

One court, one lease, one state. That answer is not automatically yours, and your lease may be worded to land differently. Use this to know what to look for and what to ask - your state's tenant hotline or a local tenant attorney can answer it for your document.

Massachusetts Law on Late Fee Clause

The law in Massachusetts
  • M.G.L. c. 186, § 15B(1)(c) is one sentence and it is absolute: "No lease or other rental agreement shall impose any interest or penalty for failure to pay rent until thirty days after such rent shall have been due."
  • The Attorney General's landlord-tenant regulation carries the same rule as a consumer-protection duty: under 940 CMR 3.17(6)(a) it is an unfair or deceptive practice for a landlord to impose any interest or penalty for late payment of rent unless the payment is 30 days overdue.
  • Section 15B fixes when a fee may start, not how large it may be, so the charge itself has to come from the lease's own terms; and § 15B(8) makes any lease provision conflicting with § 15B, or any waiver of it, void and unenforceable as against public policy.
  • A late fee is a separate question from eviction: for nonpayment by a tenant at will, M.G.L. c. 186, § 12 requires a 14-day notice to quit, and a tenant who has had no similar notice in the preceding 12 months keeps the tenancy by paying or tendering the full rent due within 10 days of receiving that notice.

M.G.L. c. 186, § 15B(1)(c); 940 CMR 3.17(6)(a) - statutes change; verify the current text for your situation.

The operative sentence is short. M.G.L. c. 186, § 15B(1)(c) provides that no lease or other rental agreement shall impose any interest or penalty for failure to pay rent until thirty days after such rent shall have been due.

The Attorney General's landlord-tenant regulation says it a second way. Under 940 CMR 3.17(6)(a) it is an unfair or deceptive practice for a landlord to impose any interest or penalty for late payment of rent unless the payment is 30 days overdue, which puts the same timing rule inside consumer-protection law.

What § 15B does not do is set the size of the charge. It fixes when a fee may start, so the amount still comes from your lease's own terms, and § 15B(8) makes any lease provision conflicting with § 15B, or any waiver of it, void and unenforceable as against public policy. Read the current text of § 15B yourself before quoting a subsection back to a landlord.

Massachusetts Tenant Protections

No lease or rental agreement may impose any interest or penalty for failure to pay rent until thirty days after that rent was due, under M.G.L. c. 186, § 15B(1)(c). Imposing one sooner is an unfair or deceptive practice under 940 CMR 3.17(6)(a). Any lease provision that conflicts with § 15B, and any waiver of it, is void and unenforceable as against public policy under § 15B(8).

For nonpayment by a tenant at will, § 12 requires a 14-day notice to quit, and a tenant who has had no similar notice in the preceding 12 months keeps the tenancy by paying or tendering the full rent due within 10 days of receiving it.

What's Specific to Boston

Grace period before a late fee

Same clause, 16 cities, different rules. Tap any city for its own guide.

Boston, Massachusetts
30-day grace
Denver, Colorado
7-day grace
Portland, Oregon
4-day grace
Austin, Texas
2-day grace
Los Angeles, California
No required grace
Miami, Florida
No required grace
Chicago, Illinois
No required grace
Phoenix, Arizona
No required grace
Atlanta, Georgia
No required grace
Columbus, Ohio
No required grace

Figures are the state rule, or the stronger city ordinance where one exists. Verify the current law for your own situation before relying on it.

Our record finds no Boston ordinance that caps a late fee or lengthens the state's 30-day grace period, so a Boston renter argues the fee on the same statute as everyone else in Massachusetts.

Where Boston does go past state law is what has to accompany an eviction for unpaid rent. The Housing Stability Notification Act, City of Boston Code, Ordinances, § 10-11, requires a landlord serving a notice to quit to serve a copy on the city's Office of Housing Stability at the same time and to attach the city's notice of basic housing rights and resources.

Section 10-11.5 then makes those rights non-waivable by any lease term. The practical read for a Boston tenant: the day count and the fee's legality come from the state statute, and the city ordinance is where you look at the paperwork behind a nonpayment case.

Has it been 30 days since rent was due?

That is the trigger. M.G.L. c. 186, § 15B(1)(c) bars any interest or penalty until thirty days after the rent was due.

Is the fee written into your lease?

Section 15B fixes when a fee may start, not how large it is, so the amount has to come from your agreement's own terms.

Does the lease claim you waived this?

It cannot. M.G.L. c. 186, § 15B(8) makes a conflicting provision or a waiver of § 15B void as against public policy.

Did a notice to quit arrive with the fee?

Read it closely. For a tenant at will M.G.L. c. 186, § 12 requires a 14-day notice, and Boston's ordinance requires the city's rights notice attached.

Sources

The law this guide relies on, and where to read it. Statutes change, so confirm the current text before you act on it.

Red Flags to Watch Out For

  • Fee posted before day 30

    M.G.L. c. 186, § 15B(1)(c) allows no interest or penalty until thirty days after rent was due, so a charge on day 5 or day 10 is too early.

  • Interest charged on late rent

    The statute names interest as well as penalty. Both are held off for the full 30 days, so a running interest line has the same problem a flat fee does.

  • A clause waiving the 30 days

    Under M.G.L. c. 186, § 15B(8) a lease provision conflicting with § 15B, or a waiver of it, is void and unenforceable as against public policy.

  • Notice to quit with no city notice

    City of Boston Code, Ordinances, § 10-11 requires a copy served on the Office of Housing Stability and the city's rights notice attached to the notice to quit.

  • No chance to pay within 10 days

    For a tenant at will with no similar notice in the preceding 12 months, M.G.L. c. 186, § 12 preserves the tenancy on paying the full rent due within 10 days.

Your Rights as a Boston Tenant

  • Thirty days before any charge

    M.G.L. c. 186, § 15B(1)(c) bars any interest or penalty for unpaid rent until thirty days after it was due. The lease cannot start the clock earlier.

  • A consumer-protection duty too

    Under 940 CMR 3.17(6)(a) imposing interest or a penalty before the payment is 30 days overdue is an unfair or deceptive practice.

  • The rule cannot be waived

    M.G.L. c. 186, § 15B(8) makes any conflicting lease provision, and any waiver of § 15B, void and unenforceable as against public policy.

  • Notice, and a window to cure

    For nonpayment by a tenant at will M.G.L. c. 186, § 12 requires a 14-day notice to quit, with a 10-day window to pay where no similar notice came in the last 12 months.

What To Do - Step by Step

1

Count the days first

Find the date rent was due and count forward. Nothing may be imposed until thirty days have passed under M.G.L. c. 186, § 15B(1)(c).

2

Check the date on the charge

Look at when the fee was actually posted to your ledger, not when you noticed it. A charge dated inside the 30 days is the whole argument.

3

Read the clause in your lease

Section 15B sets the timing, not the amount, so find what your agreement says the charge is and whether it also tries to start it earlier.

4

Ignore any waiver language

A clause conflicting with § 15B or waiving it is void under M.G.L. c. 186, § 15B(8). Signing it changed nothing.

5

Pay the rent, dispute the fee

Cover the rent itself while you argue. If a 14-day notice to quit has arrived, M.G.L. c. 186, § 12 may let you keep the tenancy by paying in full within 10 days.

6

Put the objection in writing

Email the manager, give the date rent was due and the date the fee was posted, cite § 15B(1)(c) and 940 CMR 3.17(6)(a), and confirm the current statute text before you send it.

Frequently Asked Questions

how many days late before a late fee in massachusetts
Thirty. M.G.L. c. 186, § 15B(1)(c) says no lease may impose any interest or penalty for failure to pay rent until thirty days after that rent was due, and 940 CMR 3.17(6)(a) repeats the rule as a consumer-protection duty.
does boston cap late fees
Our record finds no Boston ordinance capping a late fee or lengthening the state's 30-day rule. M.G.L. c. 186, § 15B fixes when a fee may start, not how large it may be, so the amount comes from your lease.
can my lease waive the 30-day rule in massachusetts
No. M.G.L. c. 186, § 15B(8) makes any lease provision conflicting with § 15B, and any waiver of it, void and unenforceable as against public policy, so a signed clause shortening the thirty days does not bind you.
can i be evicted over unpaid rent in boston
For nonpayment by a tenant at will, M.G.L. c. 186, § 12 requires a 14-day notice to quit, and a tenant who had no similar notice in the preceding 12 months keeps the tenancy by paying the full rent due within 10 days.
where can i read m.g.l. c. 186, § 15b(1)(c) for myself
The section is M.G.L. c. 186, § 15B(1)(c), and this guide read it on law.justia.com: open M.G.L. c. 186, § 15B(1)(c). Massachusetts publishes the official text at malegislature.gov. Statutes are amended, so check the text as it reads on the day you need it.
what is the grace period before a late fee in boston
Massachusetts: 30-day grace. Massachusetts fixes the grace period by statute: no lease may impose any interest or penalty for failure to pay rent until 30 days after the rent was due, and the Attorney General's regulations make charging one sooner an unfair or deceptive practice. That comes from M.G.L. c. 186, § 15B(1)(c).
does boston add its own rule or does massachusetts law decide
Our record finds no Boston ordinance that caps a late fee or lengthens the state's 30-day grace period. Where Boston does go beyond state law is what has to accompany an eviction for unpaid rent: the Housing Stability Notification Act (City of Boston Code, Ordinances, § 10-11) requires a landlord serving a notice to quit to serve a copy on the city's Office of Housing Stability at the same time and to attach the city's notice of basic housing rights and resources, and § 10-11.5 makes those rights non-waivable by any lease term.
how does massachusetts compare with other states on this
Massachusetts: 30-day grace. Texas: 2-day grace. California: No required grace. The chart above on this page shows every city side by side.
Legal Disclaimer: This guide is for general educational purposes only and does not constitute legal advice. Information reflects general Massachusetts and Boston law as of September 2026 but may not reflect recent changes. Consult a licensed attorney in Massachusetts for advice about your specific situation.