Pure Comparative Negligence Calculator

Pure comparative negligence allows injured plaintiffs to recover damages even when they bear most of the fault. This calculator estimates a potential damages range by applying fault-adjusted recovery to your documented economic and non-economic losses.

Our free Pure Comparative Negligence Calculator helps you estimate values based on 4 key case variables. The calculator provides 3 detailed outputs using settlement data and damage multiplier methodologies.

Enter your case details to get jurisdiction-adjusted estimates as of 2026.

What you'll learn:

• Accurate pure comparative negligence calculator estimates based on your specific inputs
• Low, average, and high cost ranges for budgeting
• How local factors impact outcomes
• How to set realistic expectations for your case

Understanding the cost breakdown helps you budget effectively for your pure comparative negligence calculator project. Here are the typical cost components:

Our pure comparative negligence calculator uses a multi-variable formula that accounts for the following inputs:

1. Total Damages Before Fault Reduction ($) — Range: 1,000 to 10,000,000
2. Your Fault Percentage (%) — Range: 0 to 99
3. State Context — Choose from: Standard application of the rule, Strict application / disputed fault, Favorable facts for plaintiff
4. Scenario Complexity — Choose from: Basic / Standard, Typical, Advanced / Complex

Based on your inputs, the calculator provides:

• Fault-Based Reduction — Dollar amount based on current market rates
• Estimated Recoverable Damages — Dollar amount based on current market rates
• Recovery Allowed — Percentage value

All calculations incorporate location-specific cost adjustments when a ZIP code is provided, using data from industry databases updated for 2026.

Applies the pure comparative negligence rule: the plaintiff recovers damages reduced by their percentage of fault, regardless of how high that percentage is. A plaintiff 90% at fault still recovers 10% of total damages. Economic damages (medical bills, lost wages, property damage) are summed, then non-economic damages are estimated via a severity-adjusted pain multiplier.

Data Sources:

• Restatement (Third) of Torts: Apportionment of Liability (American Law Institute)
• State comparative fault statutes for the 13 pure comparative negligence jurisdictions (including California, New York, Florida)
• Insurance Information Institute (III) reported average claim payouts by injury severity

Key Assumptions:

• Fault percentages are based on jury findings or insurance adjuster assessments; actual allocation is case-specific
• This model uses the pure comparative rule — the plaintiff recovers even at 99% fault
• Pain and suffering multipliers range from 1.5x to 5x economic damages based on injury severity

Learn more about our data methodology

Several factors influence your pure comparative negligence calculator estimate:

Total Damages Before Fault Reduction ($)

A key variable in determining your pure comparative negligence calculator estimate.

Your Fault Percentage (%)

A key variable in determining your pure comparative negligence calculator estimate.

State Context

Ranges from "Strict application / disputed fault" to "Favorable facts for plaintiff." Choosing Favorable facts for plaintiff can cost 1.1x more than Strict application / disputed fault.

Scenario Complexity

Ranges from "Basic / Standard" to "Advanced / Complex." Choosing Advanced / Complex can cost 1.5x more than Basic / Standard.

Jurisdiction

Settlement values and damage caps vary by state and county. Some jurisdictions impose caps on non-economic damages that significantly affect outcomes.

Case Complexity

Disputed liability, multiple parties, or severe injuries increase both potential settlement value and timeline. Attorney representation significantly affects recovery amounts.

After you run the calculator, your results include interactive sections that help you make informed decisions:

Damages Breakdown

Review each component of your estimated settlement or award separately — medical expenses, lost wages, and non-economic damages each appear as their own line item. This transparency helps you understand how each factor contributes to the total estimate and gives you realistic expectations for settlement discussions.

Visual Chart

The chart provides a visual summary of your results, making it straightforward to compare components at a glance. This is helpful when sharing estimates with a spouse, business partner, or advisor — the visual format communicates the key story faster than numbers alone.

Save and Share Your Results

Download your complete results as a CSV spreadsheet or PDF report. The PDF includes all your inputs and key results — ready to share with contractors, service providers, or anyone else who needs to review the numbers. No account or signup required.