Massachusetts tint limits at a glance
| Front side windows | 35% (mirrors on both sides) |
|---|---|
| Back side windows | 35% |
| Rear window | 35% |
| Windshield | Top 6 inches only |
| Reflectivity | 35% max |
| SUVs, vans and trucks | Same as cars |
Percentages are the minimum visible light transmission with the film installed, including the factory glass. A lower number means darker tint.
Is 5%, 20%, 35% or 50% tint legal in Massachusetts?
This table shows whether a film with each rating is legal on a sedan in Massachusetts. Factory glass blocks some light, so a film reads darker once it's installed.
| Film rating | Front side windows | Back side windows | Rear window |
|---|---|---|---|
| 5% | Not legal | Not legal | Not legal |
| 15% | Not legal | Not legal | Not legal |
| 20% | Not legal | Not legal | Not legal |
| 35% | Likely too dark once installed | Likely too dark once installed | Likely too dark once installed |
| 50% | Legal | Legal | Legal |
| 70% | Legal | Legal | Legal |
'Likely too dark once installed' means the film rating meets the limit, but on typical factory glass the combined reading usually falls under it. Meter the window to be sure.
Choosing a film that stays legal
Assume factory side glass passes about 80% of light.
- Front side windows: 45% film or lighter
- Back side windows: 45% film or lighter
- Rear window: 45% film or lighter
Factory privacy glass on many SUVs already reads well under 30%, so any film added over it will read darker still. Always meter after the install.
Fines and penalties
Fine up to $250. After a third conviction, the license can be suspended for up to 90 days.
Medical exemptions
Apply to the RMV's Medical Advisory Board with a Massachusetts physician's attestation. Approved drivers get a sticker for the driver's side window.
Inspection
Tint is checked at the annual Massachusetts vehicle inspection.
The law
Massachusetts's tint rules are set by M.G.L. c. 90 § 9D. Read the source
This page is a reference for drivers and installers, not legal advice. Enforcement can vary by city and county.
Frequently asked questions
How dark can you legally tint your windows in Massachusetts?
On a sedan, front side windows: 35% (mirrors on both sides). Back side windows: 35%. Rear window: 35%.
Is 20% tint legal in Massachusetts?
Front: Not legal. Back: Not legal. Rear: Not legal. See the 20% film row.
Is 35% tint legal in Massachusetts?
Front: Likely too dark once installed. Back: Likely too dark once installed. Rear: Likely too dark once installed. See the 35% film row.
Is tint allowed on the windshield in Massachusetts?
Top 6 inches only
Are the rules different for SUVs and trucks in Massachusetts?
Same as cars
What is the fine for illegal tint in Massachusetts?
Fine up to $250. After a third conviction, the license can be suspended for up to 90 days.
Can I get a medical exemption for window tint in Massachusetts?
Apply to the RMV's Medical Advisory Board with a Massachusetts physician's attestation. Approved drivers get a sticker for the driver's side window.
Related
Back to the full chart: Window tint laws by state
Neighboring states:
Data set last updated: