What Delaware law does to you first

First offense: a mandatory fine of $500 to $1,500 and up to 12 months of possible jail time (Delaware Code Title 21, Section 4177). The fine applies whether you blow just over the limit or well over it; blood alcohol content and the case facts move the sentencing.

License revocation: a first offense revokes your license for three months, a second offense for one year, and a third for 18 months (Delaware Code Title 21, Sections 4177 and 4177A).

Ignition interlock: to drive during a restricted period, Delaware requires a functioning ignition interlock device on your vehicle at your own cost, with the terms set under Sections 4177C and 4177G.

Second offense within 10 years: a fine of $750 to $2,500 and 60 days to 18 months of jail time, with the minimum sentence not subject to suspension.

What a DUI does to your insurance

Insurers price a DUI conviction in their highest-risk tiers. A clean-record Delaware driver runs about $241 a month on average statewide; a driver with a DUI conviction is rated as a high-risk driver, and carriers either price that tier sharply higher or decline to write the policy at all. How sharply varies by carrier more than almost any other factor, which is why two quotes on the same conviction can land thousands of dollars apart.

One Delaware-specific point that helps: Delaware does not use the SR-22 form most states require after a DUI. The Delaware DMV verifies insurance through its own certification process (Delaware Insurance Certification Form FR-19) rather than SR-22 filings. If you move here from a state that required an SR-22, that state’s filing still applies, but a Delaware DUI by itself does not trigger one.

The expensive combination is a DUI plus a lapse. A conviction prices you into a worse tier; a gap in coverage stacks a second one on top, because insurers treat drivers with lapses as riskier still. Keep the policy running even while your license is revoked, since the vehicle can stay registered and insured and the rate history stays clean.

How long it follows you, and what actually helps

Carriers typically rate a DUI for three to five years, and each company sets its own lookback period, so the same conviction drops off different carriers’ radars at different times. Two clean years is usually enough to be worth re-shopping with standard carriers again.

What helps right away: shop broadly, because high-risk pricing varies wildly; answer application questions exactly, since a missed DUI conviction can void a policy later; keep coverage continuous; and once the revocation ends and the interlock comes off, re-shop rather than staying on a high-risk renewal by default. Starting points are on the free quotes page, and the Delaware car insurance overview shows what clean-record drivers pay by town for comparison.