A third DUI conviction in South Carolina carries mandatory jail time, license suspension, and fines that increase significantly from earlier offenses

South Carolina treats a third driving under the influence (DUI) offense as a felony, not a misdemeanor. This means the penalties jump substantially — you face a minimum of 30 days in jail (up to three years), a fine between $3,800 and $6,500, and a driver's license suspension of at least three years. The state also requires an ignition interlock device on any vehicle you drive, substance abuse treatment, and community service. A felony conviction stays on your record permanently in South Carolina and affects employment, housing, and professional licensing.

The exact sentence depends on factors a judge considers: whether anyone was injured, your blood alcohol content (BAC) at the time, whether you refused a breath or blood test, and your prior DUI history. If your third offense involved an accident that injured someone, or if your BAC was significantly elevated, the judge can impose penalties at the higher end of the range or beyond. Understanding what happens next — from arrest through sentencing — helps you prepare and make informed decisions about your case.

Key Takeaways

  • A third DUI in South Carolina is prosecuted as a felony, resulting in mandatory jail time of at least 30 days and a minimum three-year license suspension.
  • Fines range from $3,800 to $6,500, and you must install an ignition interlock device on any vehicle you operate.
  • You are required to complete a substance abuse treatment program and perform community service as part of your sentence.
  • A felony DUI conviction becomes a permanent part of your criminal record and can affect employment, housing, and professional licensing opportunities.

How South Carolina Counts Prior DUI Offenses

South Carolina looks back 10 years from the date of your current arrest to count prior DUI convictions. Any DUI conviction within that 10-year window counts toward your offense level. This means if you had a first DUI in 2014 and a second in 2018, a third arrest in 2024 would be treated as your third offense because all three fall within the 10-year lookback period.

The state also counts DUI convictions from other states if they occurred within the 10-year window. A conviction for driving under the influence, driving while impaired, or an equivalent offense in another state counts the same way a South Carolina conviction does. If you are unsure whether a prior conviction qualifies, your defense attorney can review your driving record and prior case documents to clarify which offenses the prosecution will use to enhance your charges.

Jail Time and Sentencing Range

A third DUI conviction in South Carolina carries a mandatory minimum of 30 days in jail. The maximum sentence is three years. The judge has discretion within that range and will consider aggravating factors — such as a high BAC, refusal to take a breath or blood test, an accident, injury to another person, or driving with a suspended license — when deciding where your sentence falls.

Some judges may allow you to serve part of your sentence through work-release programs, where you work during the day and return to jail at night, or through home confinement with electronic monitoring. These options are not automatic; your attorney can request them, and the judge decides whether to grant them based on your circumstances and criminal history. The prosecution may also oppose such arrangements, particularly if your case involved an accident or injury.

License Suspension and the Ignition Interlock Device

Your driver's license will be suspended for a minimum of three years following a third DUI conviction. During this suspension, you cannot legally drive any vehicle, even with a restricted license. After the suspension period ends, you must explore to the South Carolina Department of Motor Vehicles (SCDMV) to reinstate your license, and reinstatement is not automatic.

An ignition interlock device (IID) is mandatory on any vehicle you own or operate during and after your license suspension. The IID is a breathalyzer connected to your vehicle's ignition; you must blow into it before the engine will start. If the device detects alcohol, the vehicle will not start. You pay for the installation and monthly monitoring fees, which typically range from $60 to $100 per month. The device must remain installed for a period set by the court, often three years or longer, and you are responsible for maintaining it and reporting to the monitoring company.

Fines, Fees, and Court Costs

A third DUI conviction requires a fine between $3,800 and $6,500. This is separate from court costs, attorney fees, and other expenses you will incur. You may also face fees for the ignition interlock device installation and monitoring, substance abuse treatment programs, and probation supervision if the judge imposes probation as part of your sentence.

If you cannot pay fines when ready, you can request a payment plan from the court. The judge may also order you to pay restitution if your DUI caused property damage or injury to another person. Restitution is separate from the fine and goes directly to the victim. All of these financial obligations must be satisfied before your case is fully closed.

Substance Abuse Treatment and Community Service

South Carolina requires anyone convicted of a third DUI to complete a substance abuse treatment program. The specific program depends on your BAC, prior treatment history, and what the court orders. Some programs are outpatient (you attend classes while living at home), while others are inpatient (you stay at a facility). The court will specify which type you must attend, and you are responsible for the cost unless you demonstrate financial hardship.

You must also perform community service, typically between 240 and 480 hours. This work is unpaid and might include cleaning public spaces, maintaining parks, or other tasks assigned by the community service coordinator. You must complete your hours within a set timeframe, usually within one year of sentencing. Failure to complete community service can result in additional jail time.

How a Felony Conviction Affects Your Life

A third DUI is a felony in South Carolina, and a felony conviction creates lasting consequences beyond the sentence itself. You lose the right to vote while incarcerated, though you regain it after release. You cannot possess a firearm or ammunition. Many employers conduct background checks and will see the felony conviction; some professions (teaching, healthcare, law enforcement, childcare) may permanently bar you from working in those fields.

Housing can become difficult; landlords often deny rental applications to people with felony records. Professional licenses in fields like nursing, counseling, or contracting may be suspended or revoked. The conviction appears on your record permanently in South Carolina — there is no automatic expungement of felony DUI convictions. You can petition for expungement only if your conviction is reversed on appeal or if you receive a pardon from the governor, both of which are rare.

What Happens After Sentencing

After you complete your jail sentence, you may be placed on probation for a period set by the judge, often three to five years. During probation, you must report regularly to a probation officer, submit to random drug and alcohol testing, and follow all conditions the judge imposed. Violating probation — by missing a meeting, testing positive for drugs or alcohol, or committing another offense — can result in additional jail time.

You must also maintain proof of car insurance and keep your ignition interlock device installed and functioning. If you are caught driving without a valid license or with a non-functioning IID, you face additional criminal charges. Once your probation ends and all fines and restitution are paid, your case is closed, but the felony conviction remains on your record.

Frequently Asked Questions

Can I get my license back before the three-year suspension ends?

No. South Carolina does not allow restricted or hardship licenses for a third DUI conviction. Your license suspension is mandatory for the full three years. After that period, you must explore for reinstatement through the SCDMV, but reinstatement is not may provide — the department reviews your case and may impose additional conditions.

What if I refuse the breath or blood test?

Refusing a test is a separate offense in South Carolina and can result in additional penalties. Your refusal can be used against you in court as evidence of guilt. The judge may also impose a longer license suspension or higher fines based on the refusal alone, on top of the DUI penalties.

Do I have to serve all 30 days in jail, or can I negotiate a shorter sentence?

The 30-day minimum is mandatory by law; the judge cannot sentence you to less. However, your attorney can request that you serve time through work-release or home confinement, which allows you to maintain employment or family responsibilities while serving your sentence. The judge has discretion to grant or deny these requests.

Will a third DUI conviction show up on background checks?

Yes. A felony DUI conviction appears on criminal background checks indefinitely in South Carolina. Employers, landlords, and licensing boards will see it. Some employers have policies that automatically disqualify candidates with felony convictions, while others evaluate each case individually.

Can I get the conviction expunged from my record?

Felony DUI convictions cannot be expunged in South Carolina except in rare circumstances — if your conviction is overturned on appeal or if you receive a gubernatorial pardon. You cannot petition for expungement based on the passage of time or good behavior after release.