In South Carolina, the DUI lookback period is ten years. Under the DUI statute, only offenses that occurred within the ten years that include and immediately precede the date of the most recent violation count as prior offenses (S.C. Code Ann. § 56-5-2930(D)). A new DUI within that window is sentenced as a second or later offense, which carries higher fines, longer jail or prison terms and longer license consequences.
Understanding the lookback period matters for anyone facing a DUI charge, because it affects how the offense is classified, the range of penalties and the length of license and ignition interlock requirements. This page is general information, and a licensed South Carolina attorney at our firm must review the facts of a case before anyone relies on it.
If you have questions about a DUI charge or how your record may affect your case, contact Touma Law Group to speak with a DUI defense attorney.
What Is a Lookback Period?

A lookback period is the amount of time a prior conviction can count when a new offense is sentenced. It determines whether a new DUI arrest is treated as a first, second, third or fourth offense, which directly affects the penalties you could face.
In South Carolina the period is ten years. This means:
- A new DUI within ten years of a prior DUI offense is sentenced as a repeat offense.
- The offense number sets the penalty range. A fourth or subsequent offense carries 1 to 5 years in prison, with longer terms at higher alcohol concentrations (S.C. Code Ann. § 56-5-2930(A)(4)).
- Separately, a DUI that proximately causes great bodily injury or death is charged as a felony DUI under S.C. Code Ann. § 56-5-2945, whether or not you have prior offenses.
- Multiple DUIs within the period lead to longer ignition interlock requirements and longer jail or prison terms.
Two things must be true for an earlier offense to count. A prior counts only if there is a conviction, guilty plea, no contest plea or bail forfeiture for it, and only if the violation behind it occurred within the ten years that include and immediately precede the date of the new violation. The statute looks at the dates the violations occurred, not the date a conviction was entered (S.C. Code Ann. § 56-5-2930(D)). For the ignition interlock periods, § 56-5-2990(A)(6) uses the same ten-year window but begins with the words “Except as provided in subsection (A)(4),” which is the third offense paragraph, and the Code does not say what that exception changes. How it affects the count for a third or later offense is unsettled, so an attorney must count your record (S.C. Code Ann. § 56-5-2990(A)(6)). For second and later offenses, SCDMV’s records decide the length of the interlock requirement regardless of how the charge was pleaded (S.C. Code Ann. § 56-5-2941(B)). An attorney can review your history and tell you how the periods apply to your case.
How the DUI Lookback Period Works in South Carolina

The ten-year period applies to convictions, guilty pleas, nolo contendere pleas and bail forfeitures for DUI or for driving with an unlawful alcohol concentration, including offenses under the laws of other states that prohibit driving under the influence (S.C. Code Ann. § 56-5-2930(D)). Within that period, a new offense brings enhanced penalties, which can include:
- Higher fines
- Longer driver’s license suspension and ignition interlock periods
- Mandatory minimum jail or prison time
- Vehicle immobilization for a second or subsequent offense
The statute sets these penalty ranges for DUI (S.C. Code Ann. § 56-5-2930):
- First offense: a $400 fine or 48 hours to 30 days in jail, with higher ranges at an alcohol concentration of 0.10 or more.
- Second offense: a fine of $2,100 to $5,100 and 5 days to 1 year in jail, with higher ranges at 0.10 or more.
- Third offense: a fine of $3,800 to $6,300 and 60 days to 3 years in jail, with higher ranges at 0.10 or more.
- Fourth or subsequent offense: 1 to 5 years in prison, with longer terms at 0.10 or more.
For the license, an ignition interlock device is required for six months after a first conviction, two years after a second, three years after a third (four years if the third offense occurs within five years of the first) and for life after a fourth or subsequent offense (S.C. Code Ann. § 56-5-2990(A)).
Because the lookback period directly affects the penalties, it is wise to speak with a DUI defense attorney early. An attorney can review your history, the alcohol concentration alleged and the evidence, and explain how prior offenses are counted. See also the penalties for a DUI in SC.
The Implied Consent Law and Refusal to Test
Under South Carolina’s implied consent law, a person who drives a motor vehicle in the State is considered to have consented to chemical tests of breath, blood or urine if the person is arrested for DUI (S.C. Code Ann. § 56-5-2950). The statute also says you do not have to take the test, but that refusing means your privilege to drive must be suspended or denied for at least six months, and your refusal may be used against you in court.
Field sobriety tests are different. South Carolina law requires a driver to submit to them only when the officer suspects the driver caused a crash that killed another person (S.C. Code Ann. § 56-5-2948).
The administrative suspension for a refusal can begin before any conviction. For a driver with a prior DUI-related conviction or suspension in the preceding ten years, the suspension periods are longer: nine months for a second-offense refusal, twelve months for a third and fifteen months for a fourth or later (S.C. Code Ann. § 56-5-2951(I)). After the suspension, the person may be able to end it by enrolling in the Ignition Interlock Device Program.
The breath test is offered first. A blood sample may be taken if the person is physically unable to provide a breath sample, and a urine sample may be requested when the officer has reasonable suspicion of drug impairment (S.C. Code Ann. § 56-5-2950(A)). Because test results and refusals can complicate a case, it is important to discuss your situation with an attorney who can review the testing procedures and the officer’s conduct.
Learn More: S.C. Code Ann. § 56-5-2930, South Carolina’s DUI statute
How a DUI Affects You After 10 Years
Even though the lookback period lasts ten years, a conviction does not simply disappear when that time is up. A DUI can continue to appear in records and can shape your life well beyond a decade.

Your Record and Background Checks
After ten years, a conviction can still appear in background checks, which may affect renting an apartment, applying for loans or employment screening.
Career and Employment Challenges
A DUI conviction can raise concerns for employers, especially in jobs that involve driving or operating heavy machinery.
Long-Term Insurance Consequences
A DUI conviction can affect your insurance. After a conviction, state law requires proof of financial responsibility before the license and registrations are restored, and insurers commonly file that proof as an SR-22 certificate (S.C. Code Ann. § 56-9-500). SCDMV may waive the requirement after three years if there is no new qualifying conviction (S.C. Code Ann. § 56-9-620). Confirm the requirement in your case with SCDMV or your insurer. Insurers set their own rates and how far back they look.
A New DUI After the Lookback Period
Once ten years have passed without another offense, an older offense no longer counts as a prior under the DUI statute, so a new DUI is generally sentenced under the first-offense range, which carries lower statutory penalties (S.C. Code Ann. § 56-5-2930). See the potential penalties page for the ranges.
Learn More: What to do after an arrest for DUI in SC
How the DUI Lookback Period Affects Auto Insurance
A DUI conviction can make you a “high-risk driver” in the eyes of insurance companies, and premiums commonly go up. By statute, an insurer may not increase premiums, add surcharges or cancel coverage based solely on a DUI charge unless the person is convicted (S.C. Code Ann. § 56-5-2951(N)).
The lookback period in the DUI statute decides how offenses are counted for sentencing and licensing. It does not set how long an insurance company reviews your history, and each insurer sets its own rules. A felony DUI conviction can make insurance more complicated, and some companies may decline coverage. An attorney can explain what to expect from the court process, but your insurer can tell you about your policy.
Why the DUI Lookback Period Is Important
The lookback period is part of how South Carolina grades DUI offenses by number of prior offenses. Multiple DUIs within the lookback period can lead to:
- Extended driver’s license suspensions
- Required ignition interlock devices
- Mandatory alcohol education or treatment programs
- Longer prison sentences
Every person convicted of DUI must enroll in and complete an Alcohol and Drug Safety Action Program certified by the Office of Substance Use Services (S.C. Code Ann. § 56-5-2930(H)).

How a Columbia, SC DUI Attorney Can Help
Facing a DUI, especially a second or third within the lookback period, can be overwhelming. A DUI defense attorney can help you understand your rights, the potential penalties and your options.
At Touma Law Group, our attorneys can:
- Review the field sobriety tests and breath tests in your case
- Review whether the implied consent law was followed
- Look at refusal procedures and police conduct
- Identify questions about the prosecution’s case, including testing issues
- Explain how prior offenses are counted in your case
- Discuss alternatives, such as treatment programs, with you
A DUI charge, even a serious one, is not a conviction until the State proves it. Results depend on the facts, the evidence and the law, and no attorney can promise an outcome.
Contact Touma Law Group Today
Driving under the influence is a serious matter with long-lasting consequences. If you are facing a DUI charge in Columbia, South Carolina, speak with an attorney. Contact Touma Law Group today for a free consultation.
Our team can review your case, the police reports and the testing procedures, and discuss options such as restricted licenses and treatment programs.
Take the first step. Call (803) 879-4499 to speak with Touma Law Group.
FAQs:
How does the lookback period affect my driver’s license?
A new DUI conviction within the lookback period carries longer ignition interlock requirements, which are two years for a second offense, three years for a third and for life for a fourth or subsequent offense (S.C. Code Ann. § 56-5-2990(A)). The license suspension after a refusal or a high test result is also longer for a driver with prior offenses or suspensions in the preceding ten years (S.C. Code Ann. § 56-5-2951(I)). You must also complete an Alcohol and Drug Safety Action Program.
Does the lookback period affect SR-22 insurance requirements?
An SR-22 is a certificate of financial responsibility that your insurer files with the state. Whether one is required after a DUI, and for how long, depends on the case, so confirm the requirement with SCDMV or your insurer.
Can a DUI from another state count against me in South Carolina?
Yes. A conviction, guilty plea, nolo contendere plea or bail forfeiture under another state’s law that prohibits driving under the influence counts as a prior offense in South Carolina if it falls within the ten-year period (S.C. Code Ann. § 56-5-2930(D)).
What happens to a DUI after 10 years? After ten years, an earlier offense no longer counts as a prior offense for sentencing under the DUI statute, so a new DUI would be sentenced within the first-offense range. The old conviction can still show up on your criminal and driving records and may affect insurance or job opportunities.
Does the lookback period apply to the administrative license suspension? Yes. The suspension periods for a refusal or a result of 0.15 or more depend on whether the driver had a DUI-related conviction or suspension within the ten years before the new violation (S.C. Code Ann. § 56-5-2951(I)).