Negligence Damages Estimator

ANA›Life Services Authority›National Calculator Authority›Negligence Damages Estimator

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Negligence Damages Estimator

Estimates total compensatory damages in a negligence case, including economic losses (medical expenses, lost wages, future losses) and non-economic losses (pain and suffering), adjusted for comparative fault.

### Economic Damages

Past Medical Expenses ($)

Future Medical Expenses ($)

Past Lost Wages ($)

Annual Earning Capacity ($)

Years of Future Lost Earning Capacity

Discount Rate for Future Losses (% per year)

Property Damage ($)

Other Economic Losses ($)

### Non-Economic Damages

Daily Pain & Suffering Rate ($)

Number of Days of Pain & Suffering

Emotional Distress Damages ($)

Loss of Consortium ($)

### Comparative Fault & Caps

Plaintiff's Comparative Fault (%)

Comparative Fault Rule

Pure Comparative Fault (recovery always allowed) Modified — 50% Bar Rule (barred if ≥ 50%) Modified — 51% Bar Rule (barred if > 50%) Contributory Negligence (barred if any fault)

Non-Economic Damages Cap ($ — 0 = no cap)

Calculate Damages

function negVal(id) { var v = parseFloat(document.getElementById(id).value); return isNaN(v) ? 0 : v; }

function negPresentValue(annualAmount, years, discountRate) { // Present value of annuity: PV = A * [1 - (1+r)^-n] / r // If r == 0, PV = A * n if (discountRate === 0 || years === 0) return annualAmount * years; var r = discountRate / 100; return annualAmount * (1 - Math.pow(1 + r, -years)) / r; }

function negCalc() { var errors = [];

var medPast = negVal("neg-med-past"); var medFuture = negVal("neg-med-future"); var wagePast = negVal("neg-wage-past"); var wageAnnual = negVal("neg-wage-annual"); var wageYears = negVal("neg-wage-years"); var discountRate = negVal("neg-discount-rate"); var property = negVal("neg-property"); var otherEcon = negVal("neg-other-economic"); var painDaily = negVal("neg-pain-daily"); var painDays = negVal("neg-pain-days"); var emotional = negVal("neg-emotional"); var consortium = negVal("neg-loss-consortium"); var faultPct = negVal("neg-fault-pct"); var nonEconCap = negVal("neg-noneconomic-cap"); var faultRule = document.getElementById("neg-fault-rule").value;

// Validation if (discountRate 20) errors.push("Discount rate must be between 0% and 20%."); if (faultPct 100) errors.push("Comparative fault percentage must be between 0 and 100."); if (wageYears 60) errors.push("Years of future lost earning capacity must be between 0 and 60."); if (medPast 0) { document.getElementById("neg-result").innerHTML = "Input Errors:" + errors.map(function(e){ return ""; }).join("") + ""; return; }

// Check if plaintiff is barred from recovery var barred = false; if (faultRule === "contributory" && faultPct > 0) barred = true; if (faultRule === "modified50" && faultPct >= 50) barred = true; if (faultRule === "modified51" && faultPct > 50) barred = true;

if (barred) { document.getElementById("neg-result").innerHTML = "Recovery Barred: Under the selected comparative fault rule, " + "a plaintiff with " + faultPct.toFixed(1) + "% fault cannot recover damages."; return; }

// --- Economic Damages --- var futureWagePV = negPresentValue(wageAnnual, wageYears, discountRate); var totalEconomic = medPast + medFuture + wagePast + futureWagePV + property + otherEcon;

// --- Non-Economic Damages --- var painSuffering = painDaily * painDays; var totalNonEconomic = painSuffering + emotional + consortium;

// Apply non-economic cap if set var nonEconCapped = false; if (nonEconCap > 0 && totalNonEconomic > nonEconCap) { totalNonEconomic = nonEconCap; nonEconCapped = true; }

// --- Gross Total --- var grossTotal = totalEconomic + totalNonEconomic;

// --- Apply Comparative Fault Reduction --- var reductionFactor = faultPct / 100; var reduction = grossTotal * reductionFactor; var netTotal = grossTotal - reduction;

// --- Format --- function fmt(n) { return "$" + n.toLocaleString("en-US", {minimumFractionDigits: 2, maximumFractionDigits: 2}); }

var html = "### Damages Estimate "; function row(label, val, indent) { return "" + label + "" + fmt(val) + ""; } function divRow(label) { return "" + label + ""; }

html += divRow("Economic Damages"); html += row("Past Medical Expenses", medPast, true); html += row("Future Medical Expenses", medFuture, true); html += row("Past Lost Wages", wagePast, true); html += row("Future Lost Earning Capacity (PV, " + wageYears + " yrs @ " + discountRate + "%)", futureWagePV, true); html += row("Property Damage", property, true); html += row("Other Economic Losses", otherEcon, true); html += row("Total Economic Damages", totalEconomic, false);

html += divRow("Non-Economic Damages"); html += row("Pain & Suffering (" + painDays + " days × " + fmt(painDaily) + "/day)", painSuffering, true); html += row("Emotional Distress", emotional, true); html += row("Loss of Consortium", consortium, true); if (nonEconCapped) { html += "⚠ Non-economic damages capped at " + fmt(nonEconCap) + ""; } html += row("Total Non-Economic Damages", totalNonEconomic, false);

html += divRow("Totals"); html += row("Gross Total Damages", grossTotal, false); if (faultPct > 0) { html += row("Less: Plaintiff's Fault Reduction (" + faultPct.toFixed(1) + "%)", -reduction, false); } html += "Net Recoverable Damages" + "" + fmt(netTotal) + ""; html += "";

html += "This is an estimate only. Actual damages depend on jurisdiction, evidence, and judicial discretion.

";

document.getElementById("neg-result").innerHTML = html; }

#### Formulas Used

Future Lost Earning Capacity (Present Value Annuity): PV = Annual Earnings × [1 − (1 + r)^(−n)] / r where r = discount rate per year, n = years of loss. If r = 0, PV = Annual Earnings × n.

Pain & Suffering (Per Diem Method): Pain & Suffering = Daily Rate × Number of Days

Gross Total Damages: Gross = Total Economic + Total Non-Economic (subject to any statutory cap)

Net Recoverable Damages: Net = Gross × (1 − Plaintiff's Fault %) Subject to bar rules: Pure (always recovers), Modified 50% (barred if fault ≥ 50%), Modified 51% (barred if fault > 50%), Contributory (barred if any fault).

#### Assumptions & References

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References

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