Tennessee Ignition Interlock Cost Calculator 2026
State-specific DUI cost estimates for Tennessee, including fines, attorney fees, SR-22 insurance, ignition interlock, and more.
Your Tennessee DUI estimate will appear here
Answer the questions and press the button. You will get a low, typical and high figure, with each cost listed on its own line.
- Uses this state's own fines, suspension and interlock rules
- Market costs such as attorney fees are labelled as estimates
- Free, and nothing to sign up for
Tennessee DUI FAQ
How much does a DUI cost in Tennessee?
Attorney fees for a first-offense DUI in Tennessee typically run $2,000 to $10,000 on our estimates, and the fine is $350 to $1,500 before court costs. Adding insurance, interlock, education, reinstatement and lost time from work, our calculator puts a typical first offense at about $26,919 (range $13,999 to $43,148) with its default answers; the median of our 50 state estimates is $17,615.
How long is your license suspended for a first DUI in Tennessee?
A first-offense DUI conviction in Tennessee carries a license suspension of 1 year (365 days). A hardship or restricted license may be available during this period.
Is an ignition interlock device required in Tennessee for a first DUI?
Yes. Tennessee requires an ignition interlock device for 12 months following a first DUI conviction.
How long is SR-22 insurance required after a DUI in Tennessee?
Tennessee requires SR-22 high-risk insurance filing for 3 years following a DUI conviction.
Can a DUI be expunged in Tennessee?
Tennessee does not allow DUI convictions to be expunged. Some states have other ways to limit who can see a record, such as sealing, which this site does not cover yet.
Tennessee DUI figures this calculator uses
- Ignition interlock, first offense
- 12 months
- Ignition interlock, second offense
- 24 months
- Ignition interlock, third offense
- 72 months
- Required for every offense
- Yes
- Typical monthly lease and monitoring (estimate)
- $75
Statutory figures were checked against Tennessee law (primary source) and last verified May 2026. Typical ranges are market estimates, not law; see our methodology.
Worked example
With the calculator's default answers (offense number: First offense; number of vehicles you own: 1 vehicle):
| Cost | Typical |
|---|---|
| Installation Fee | $100 |
| Monthly Lease and Monitoring (12 months) | $900 |
| Calibration and Service Visits | $0 |
| Removal Fee | $75 |
| Estimated total (range $890 to $1,305) | $1,075 |
Change the answers in the calculator above to see your own estimate.
On our estimates, a typical first-offense DUI in Tennessee comes to about $26,919, the 4th highest of the 50 states. The median of our 50 state estimates is $17,615. These come from the total-cost calculator with its default answers, not from a national survey.
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Tennessee Attorney Cost →Tennessee Total Cost →Tennessee SR-22 Insurance →Tennessee Suspension Timeline →Related Guide
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