Contractor Insurance Coverage Estimator

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.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }

Contractor Insurance Coverage Estimator

Estimate recommended General Liability, Workers' Compensation, and Commercial Auto insurance coverage amounts based on your contracting business profile.

Trade / Contractor Type

General Contractor Electrical Plumbing Roofing HVAC Painting Landscaping Concrete / Masonry Carpentry / Framing

Annual Gross Revenue ($)

Number of Employees (including owner)

Annual Total Payroll ($)

Number of Commercial Vehicles

Largest Single Project Value ($)

Primary Work Type

Residential Commercial Industrial

Do you hire subcontractors?

No Yes

Calculate Coverage

function conCalc() { var resultDiv = document.getElementById('con-result');

// --- Gather inputs --- var trade = document.getElementById('con-trade').value; var revenue = parseFloat(document.getElementById('con-revenue').value); var employees = parseInt(document.getElementById('con-employees').value); var payroll = parseFloat(document.getElementById('con-payroll').value); var vehicles = parseInt(document.getElementById('con-vehicles').value); var projectSize = parseFloat(document.getElementById('con-project-size').value); var workType = document.getElementById('con-work-type').value; var subcontract = document.getElementById('con-subcontractors').value;

// --- Validation --- if (isNaN(revenue) || revenue revenue) { resultDiv.innerHTML = 'Payroll cannot exceed Annual Gross Revenue.

'; return; }

// ------------------------------------------------------- // TRADE RISK MULTIPLIERS (GL base rate per $1,000 revenue) // Source: ISO GL classification rate ranges // ------------------------------------------------------- var tradeRiskMap = { general: { glRate: 0.012, wcRate: 0.085, riskLabel: 'High' }, electrical: { glRate: 0.010, wcRate: 0.065, riskLabel: 'Medium-High' }, plumbing: { glRate: 0.010, wcRate: 0.060, riskLabel: 'Medium-High' }, roofing: { glRate: 0.018, wcRate: 0.150, riskLabel: 'Very High' }, hvac: { glRate: 0.009, wcRate: 0.055, riskLabel: 'Medium' }, painting: { glRate: 0.008, wcRate: 0.070, riskLabel: 'Medium' }, landscaping: { glRate: 0.007, wcRate: 0.045, riskLabel: 'Medium' }, concrete: { glRate: 0.011, wcRate: 0.090, riskLabel: 'High' }, carpentry: { glRate: 0.010, wcRate: 0.080, riskLabel: 'High' } };

var tradeData = tradeRiskMap[trade];

// ------------------------------------------------------- // WORK TYPE MULTIPLIER // ------------------------------------------------------- var workTypeMultiplier = { residential: 1.0, commercial: 1.25, industrial: 1.50 }; var wtMult = workTypeMultiplier[workType];

// ------------------------------------------------------- // SUBCONTRACTOR ADDITIONAL INSURED FACTOR // ------------------------------------------------------- var subFactor = (subcontract === 'yes') ? 1.15 : 1.0;

// ------------------------------------------------------- // GENERAL LIABILITY COVERAGE CALCULATION // Formula: // Base GL Premium = (Revenue / 1000) * glRate * workTypeMultiplier * subFactor // Recommended Per-Occurrence Limit: // = MAX( $1,000,000 , ROUNDUP(projectSize * 2, nearest $500k) ) // Recommended Aggregate Limit = Per-Occurrence * 2 // Minimum aggregate = $2,000,000 (industry standard) // ------------------------------------------------------- var basePremiumGL = (revenue / 1000) * tradeData.glRate * wtMult * subFactor;

// Per-occurrence limit: at least $1M, or 2x largest project rounded to nearest $500k var rawPerOcc = Math.max(1000000, projectSize * 2); var perOccLimit = Math.ceil(rawPerOcc / 500000) * 500000;

// Aggregate = 2x per-occurrence, minimum $2M var aggregateLimit = Math.max(2000000, perOccLimit * 2);

// ------------------------------------------------------- // WORKERS' COMPENSATION COVERAGE CALCULATION // Formula: // WC Premium = (Payroll / 100) * wcRate * workTypeMultiplier // Employer's Liability Limit: // Small (20): $1M / $1M / $1M // ------------------------------------------------------- var wcPremium = (payroll / 100) * tradeData.wcRate * wtMult;

var elLimit; if (employees 0) { var baseAutoPerVehicle = 1200; autoPremium = vehicles * baseAutoPerVehicle * wtMult; var autoLimit = (workType === 'residential') ? 500000 : 1000000; autoLimitLabel = '$' + autoLimit.toLocaleString() + ' Combined Single Limit'; autoRecommended = autoLimit; }

// ------------------------------------------------------- // TOTAL ESTIMATED ANNUAL PREMIUM // ------------------------------------------------------- var totalPremium = basePremiumGL + wcPremium + autoPremium;

// ------------------------------------------------------- // UMBRELLA / EXCESS LIABILITY RECOMMENDATION // Triggered when: revenue > $1M OR projectSize > $500k OR industrial // Recommended umbrella = MAX($1M, projectSize rounded to nearest $1M) // ------------------------------------------------------- var umbrellaNeeded = (revenue > 1000000 || projectSize > 500000 || workType === 'industrial'); var umbrellaLimit = 0; var umbrellaPremium = 0; if (umbrellaNeeded) { umbrellaLimit = Math.max(1000000, Math.ceil(projectSize / 1000000) * 1000000); umbrellaPremium = umbrellaLimit * 0.0008; // ~$800 per $1M of umbrella coverage totalPremium += umbrellaPremium; }

// ------------------------------------------------------- // FORMAT HELPERS // ------------------------------------------------------- function fmt(n) { return '$' + Math.round(n).toLocaleString(); }

// ------------------------------------------------------- // BUILD RESULT HTML // ------------------------------------------------------- var html = '### Estimated Coverage Recommendations '; html += ''; html += 'Coverage TypeRecommended LimitEst. Annual Premium'; html += '';

html += 'General Liability' + '' + fmt(perOccLimit) + ' per occurrence' + fmt(aggregateLimit) + ' aggregate' + '' + fmt(basePremiumGL) + '';

html += 'Workers' Compensation' + 'Statutory + Employer's Liability' + elLimit + '' + '' + fmt(wcPremium) + '';

if (vehicles > 0) { html += 'Commercial Auto (' + vehicles + ' vehicle' + (vehicles > 1 ? 's' : '') + ')' + '' + autoLimitLabel + '' + '' + fmt(autoPremium) + ''; } else { html += 'Commercial AutoNot applicable (0 vehicles)—'; }

if (umbrellaNeeded) { html += 'Umbrella / Excess Liability' + '' + fmt(umbrellaLimit) + ' per occurrence' + '' + fmt(umbrellaPremium) + ''; }

html += 'Total Estimated Annual Premium' + fmt(totalPremium) + ''; html += '';

html += ''; html += 'Risk Profile: ' + tradeData.riskLabel + '  |  '; html += 'Work Type: ' + workType.charAt(0).toUpperCase() + workType.slice(1) + '  |  '; html += 'Subcontractors: ' + (subcontract === 'yes' ? 'Yes (+15% GL loading)' : 'No'); html += '';

html += '* Premiums are estimates only. Actual quotes depend on claims history, location, deductibles, and carrier underwriting.

';

resultDiv.innerHTML = html; }

#### Formulas Used

General Liability Premium (estimate): GL Premium = (Annual Revenue ÷ 1,000) × Trade GL Rate × Work-Type Multiplier × Subcontractor Factor Per-Occurrence Limit = MAX($1,000,000 ; ROUNDUP(Largest Project × 2, nearest $500k)) Aggregate Limit = MAX($2,000,000 ; Per-Occurrence × 2)

Workers' Compensation Premium (estimate): WC Premium = (Annual Payroll ÷ 100) × Trade WC Rate × Work-Type Multiplier Employer's Liability limits scale with employee count: <5 → $100k/$500k/$100k; 5–20 → $500k; >20 → $1M

Commercial Auto Premium (estimate): Auto Premium = Number of Vehicles × $1,200 base × Work-Type Multiplier

Umbrella / Excess Liability: Triggered when Revenue > $1M, Largest Project > $500k, or Industrial work. Umbrella Limit = MAX($1M ; ROUNDUP(Largest Project, nearest $1M)) Umbrella Premium ≈ $800 per $1M of coverage

Work-Type Multipliers: Residential = 1.0×, Commercial = 1.25×, Industrial = 1.50×

#### Assumptions & References

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References