Under Massachusetts law, it’s illegal to operate a motor vehicle with a blood alcohol content (BAC) of 0.08% or higher (or any level that impairs your ability to drive safely). Penalties increase with repeat offenses, refusal to take a breathalyzer, or involvement in an accident.

| Offense | License Loss | Fines & Fees | Possible Jail |
|---|---|---|---|
| 1st OUI | Up to 1 year | $500–$5,000 | Up to 2½ yrs (jail rarely imposed) |
| 2nd OUI | 2 years | $600–$10,000 | 30 days–2½ yrs |
| 3rd OUI | 8 years | $1,000–$15,000 | 150 days–5 yrs |
