Florida's Modified Comparative Negligence Rule

Florida decides injury cases by dividing fault into percentages, and since 2023 those percentages carry a hard rule.

Your compensation drops by your share of the blame, and if your share passes 50 percent, you recover nothing at all.

One percentage point, from 50 to 51, is the difference between half your damages and zero.

Insurance adjusters assign these percentages long before any jury does, and they assign them knowing exactly where the cliff sits.

Fault allocation is an argument, not a fact, and it is arguable in both directions.

Here is how Florida's rule works and how the percentage actually gets fought.

Under § 768.81, a jury assigns each party a percentage of fault, and each recovers damages reduced by their own share.^[1] The arithmetic is simple. The stakes are not.

Every point between those examples is worth real dollars. On a $400,000 claim, each percentage point of fault is $4,000, which is why the fault conversation with an adjuster is never casual and never neutral.

For fifty years Florida followed pure comparative negligence: a plaintiff 90 percent at fault could still recover 10 percent of their damages. HB 837 ended that for causes of action accruing after March 24, 2023, replacing it with the modified system and its greater-than-50-percent bar.

Two carve-outs matter.

Medical malpractice is exempt. The Legislature excluded medical negligence claims from the bar, so pure comparative fault still governs them. A patient found 60 percent at fault, for skipping follow-ups, say, can still recover 40 percent in a malpractice case.

Older injuries keep the old law. The bar applies by accrual date, not filing date. A claim that accrued before March 24, 2023 is judged under pure comparative negligence even today. With Florida's transition rules still working through the courts, the date question deserves a careful answer, not an assumption. The broader reform is covered on our page about how HB 837 changed Florida injury law.

No formula produces a fault percentage. It comes out of evidence, argument, and leverage, which means it can be moved.

The push up. Adjusters build your percentage from anything available: a recorded statement where you said "I didn't see him," a police report that noted your speed, the classic arguments that you could have avoided the crash, were partly distracted, or braked late. Each theory adds points, and points are money. Past 50, they are the whole case.

The push back. Physical evidence outargues speculation. Vehicle damage patterns and crush depth, event data recorder downloads, skid marks and final rest positions, camera footage from businesses and doorbells, and disinterested witnesses each pin fault where it belongs. The counterattack also runs offense: the other driver's phone records, prior violations, and the crash reconstruction that shows what the seconds before impact really contained.

The percentage that sticks is the one supported by the better-preserved record. Evidence on Florida roads disappears in days, which makes the first week after a crash worth more to the fault fight than any month that follows.

The 51 percent bar is written into car crash negotiations, but § 768.81 governs negligence cases generally, and the defense uses it everywhere.

In slip and fall cases, the argument is footwear, phones, and where you were looking. In dog bite cases, Florida's strict liability statute has its own comparative reduction built in. In crash cases, not wearing a seat belt can itself reduce damages through the seat belt defense. Motorcycle and pedestrian cases attract fault arguments dressed up as physics.

The common thread: every defense theory needs evidence to survive, and most of them are built to survive negotiation, not trial. Treating the percentage as negotiable is the single biggest mindset difference between represented and unrepresented claimants.