Key Takeaways

  • Iowa follows a modified comparative fault system with the 51% rule
  • Claimants cannot recover damages if they are 51% or more at fault
  • Damages are reduced by the claimant's percentage of fault when below 51%
  • Defendants 50% or more at fault are jointly and severally liable for economic damages only
  • Non-economic damages (pain and suffering) are allocated by individual fault percentage
Last updated: January 2026

Iowa Modified Comparative Fault (51% Rule)

Overview

Iowa follows a modified comparative fault system under Iowa Code Chapter 668. This system determines how fault is allocated and how damages are calculated in personal injury cases.

The 51% Bar Rule

Under Iowa's modified comparative fault:

Claimant's FaultRecovery Allowed?Calculation
0-50%YesDamages reduced by fault %
51% or moreNoCompletely barred from recovery

Example Calculations

Scenario 1: Claimant 30% at fault, $100,000 in damages

  • Recovery = $100,000 × (100% - 30%) = $70,000

Scenario 2: Claimant 51% at fault, $100,000 in damages

  • Recovery = $0 (barred from any recovery)

Joint and Several Liability

Iowa Code Chapter 668 provides specific rules for multiple defendants:

Economic Damages

  • Defendants 50% or more at fault are jointly and severally liable for economic damages
  • All such defendants can be held responsible for the full amount

Non-Economic Damages

  • Each defendant is only responsible for their proportionate share
  • No joint and several liability for pain and suffering, etc.
Damage TypeDefendant 50%+ FaultDefendant <50% Fault
EconomicJoint & severalProportionate only
Non-economicProportionate onlyProportionate only

Statutory Basis

Under Iowa Code § 668.3:

"Contributory fault shall not bar recovery in an action by a claimant to recover damages for fault resulting in death or in injury to person or property unless the claimant bears a greater percentage of fault than the combined percentage of fault attributed to the defendants..."

Exam Tip: Remember the 51% threshold - a claimant who is exactly 51% at fault is completely barred from recovery. At 50% fault, recovery is still possible (reduced by 50%).

Test Your Knowledge

Under Iowa's modified comparative fault system, when is a claimant completely barred from recovery?

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Test Your Knowledge

If a claimant in Iowa is 40% at fault and has $50,000 in damages, how much can they recover?

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Test Your Knowledge

For which type of damages are defendants 50% or more at fault jointly and severally liable in Iowa?

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