South Carolina Window Tint Laws Explained: Legal VLT Limits for 2026

You just dropped serious money on a tint job and now there’s that nagging worry every time a patrol car eases up behind you. Here’s the calm version: in South Carolina your front side windows can go down to 27% VLT measured as the combined film-plus-glass reading. That single number settles most of the panic. The rest is detail you should still know.

How dark can you legally tint in South Carolina?

Front side windows, the side windows behind the driver, and the rear glass all share the same floor: 27% VLT, combined film and glass, and the film must be nonreflective. That’s spelled out in subsections (C) and (D) of South Carolina Code § 56-5-5015, the state’s sunscreen-device statute. The windshield is treated separately — film is allowed only as a strip along the top, and only down to the AS-1 line. Anything below that line on the glass is off the table.

Does South Carolina really ban dark front windows on every vehicle?

Myth: a 27% limit means a Tahoe and a Civic follow the exact same rule. Reality is friendlier to big rigs. Subsection (I) of the statute says the VLT requirement applies to windows behind the driver on pickup trucks, but does not apply to those rear windows on other trucks, buses, trailers, mobile homes, multipurpose passenger vehicles, and RVs. So an SUV can run limo dark behind the front doors; a pickup cannot.

Myth: there’s no legal path to darker glass for sun-sensitive drivers. South Carolina actually wrote the exemption into law. Subsection (H) exempts a vehicle whose owner holds an affidavit from a licensed physician or optometrist stating a physical condition requires darker film. The affidavit lives in the car and gets refreshed every two years.

Reflectivity, color, and the windshield rule

Every legal sunscreen device in South Carolina must be nonreflective — no mirror-look film — and it can’t be red, yellow, or amber. On the windshield, film is permitted only as a top band that stays above the AS-1 line, and if that AS-1 mark isn’t visible, no film goes on the windshield at all. That AS-1 designation traces straight back to the federal glazing rule, FMVSS 205 (49 CFR 571.205), which every state borrows to mark where windshield glass must stay clear.

Penalties and what you must keep

The state ties tint to a paper trail. Every after-factory tinted window has to carry a certificate of compliance in its lower right corner, naming the installer and the VLT.

What to do: keep the installer’s certificate of compliance stuck to each tinted window, carry your medical affidavit if you have one, and make sure any rear-window tint is paired with both outside mirrors.

Want the numbers turned into a build you don’t have to second-guess? Start with our window tint service, compare shades on the window tint laws hub, and check pricing before you get started. If paint is next on the list, our paint protection film and ceramic coating pages cover the rest. Out-of-state often? See our Texas window tint laws guide too.