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HomeLegal & BusinessWorkers Comp Calculator

Workers Comp Calculator

Estimate workers compensation insurance premiums based on payroll, NCCI class code, and experience modifier.

Auto-updated May 12, 2026 · Verified daily against IRS, Fed & Treasury sources

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Workers Comp Calculator

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Assumptions· 2026

  • ·Weekly benefit: 66⅔% of pre-injury average weekly wage (AWW), subject to state maximum
  • ·State maximum weekly benefit ranges: ~$800 (MS) to ~$2,300 (MA) in 2026
  • ·Employer premium estimate: payroll × class code rate per $100 (NCCI industry rate tables)
  • ·Temporary total disability (TTD) vs. permanent partial disability (PPD) benefit types modeled
When this is wrong
  • ·Independent contractor exclusion: true independent contractors are generally not covered by workers' comp
  • ·Exclusive remedy doctrine: workers' comp typically bars personal injury lawsuit against employer (exceptions for intentional acts)
  • ·Waiting period: most states require 3–7 days of disability before benefits begin (retroactive if extended)
  • ·Federal employees covered by FECA (not state workers' comp) with different benefit structure
Assumptions· 2026▾
  • ·Weekly benefit: 66⅔% of pre-injury average weekly wage (AWW), subject to state maximum
  • ·State maximum weekly benefit ranges: ~$800 (MS) to ~$2,300 (MA) in 2026
  • ·Employer premium estimate: payroll × class code rate per $100 (NCCI industry rate tables)
  • ·Temporary total disability (TTD) vs. permanent partial disability (PPD) benefit types modeled
When this is wrong
  • ·Independent contractor exclusion: true independent contractors are generally not covered by workers' comp
  • ·Exclusive remedy doctrine: workers' comp typically bars personal injury lawsuit against employer (exceptions for intentional acts)
  • ·Waiting period: most states require 3–7 days of disability before benefits begin (retroactive if extended)
  • ·Federal employees covered by FECA (not state workers' comp) with different benefit structure
Real-world example: Freelancer deciding between LLC and S-Corp▾

A Texas-based freelance graphic designer earns $140,000 net profit/year from client work. She's evaluating whether to stay as a sole proprietor, form an LLC, or elect S-Corp status to reduce self-employment taxes.

  • Net business profit: $140,000
  • Sole prop SE tax (15.3%): ~$19,800
  • S-Corp reasonable salary: $75,000
  • SE tax on salary portion: ~$11,475
  • S-Corp distribution (no SE tax): $65,000
Annual SE tax savings via S-Corp
~$8,300/yr

Takeaway: S-Corp saves $8,300/year but adds ~$1,500-$3,000 in accounting fees (payroll, extra returns). Break-even is around $80-90K net profit. Below that, the overhead eats the savings. Texas has no state income tax, so the benefit is purely federal SE savings.

When this calculator is wrong▾
  • Entity structure recommendations depend on state law

    LLC annual fees range from $0 (Ohio) to $800 minimum (California, even for zero-revenue LLCs). Delaware C-Corp is standard for VC-backed companies but adds registered agent costs (~$300/yr) for out-of-state entities. The "best" structure is state-specific.

  • S-Corp election has eligibility requirements

    S-Corps cannot have more than 100 shareholders, cannot have non-US shareholders, and cannot have corporate shareholders. Violating these rules (e.g., adding a foreign investor) terminates S-Corp status retroactively, potentially creating a large unexpected tax event.

  • Reasonable compensation determination is subjective

    The IRS requires S-Corp owner-employees to pay themselves a "reasonable salary" before taking distributions. There is no fixed formula — the IRS looks at industry benchmarks, duties, and hours worked. Setting the salary too low is a common audit trigger for S-Corps.

  • Break-even calculations exclude time cost

    Business break-even models track revenue vs. direct costs. They rarely factor in the owner's time as a cost. If you're working 60 hours/week at imputed $50/hour, your "profitable" business may be paying you $12/hour after the opportunity cost calculation.

    Break-Even Calculator
  • Business valuation methods produce different results

    A service business valued on EBITDA multiples (2-4×) gets a very different number than one valued on SDE (seller's discretionary earnings) or discounted cash flow. Buyers and sellers typically use different methods to argue their preferred price. This calculator uses a single method.

    Business Valuation Calculator

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Your Results

Based on your inputs

ℹ️Demo numbers — replace inputs to see yours
Estimated Annual Premium
$560positive

$47/month

Annual Payroll$200,000
Class Rate (per $100)$0.28
Base Premium$560
After Exp. Mod (1×)$560
Final Premium$560
Per Employee$112/yr
Monthly Payment$47/mo

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WC premium = (Payroll ÷ 100) × Class Rate × Experience Modifier. Higher-risk jobs have higher class rates. A good claims history lowers your experience mod below 1.0.

An experience modifier (EMR) compares your claims history to other businesses in your industry. 1.0 is average. Below 1.0 means fewer claims (lower premium). Above 1.0 means more claims (higher premium).

Most states require workers comp for all employees except sometimes very small businesses (1-3 employees) or domestic workers. Sole proprietors and partners are usually exempt but can opt in.

Workers comp doesn't cover self-employed individuals (unless elected), independent contractors, or injuries intentionally caused by the employee. It also doesn't replace 100% of lost wages.

Workers comp typically pays 66% of your average weekly wage, up to your state's maximum. Most states cap benefits at 80-100% of the state average weekly wage. Benefits are generally tax-free, so the effective replacement rate is higher.

Reduce premiums by implementing workplace safety programs, maintaining a clean claims history to lower your experience modifier, classifying employees correctly, and shopping quotes from multiple carriers. Return-to-work programs also reduce claim costs and future premiums.

Insurance carriers audit your actual payroll annually to adjust premiums. If your payroll grew beyond the estimate, you owe additional premium. If it decreased, you receive a refund. Keep accurate payroll records by job classification to avoid surprises.

Generally no, but if a contractor is misclassified and should be an employee, you may be liable for workers comp coverage. Some states require certificates of insurance from subcontractors, or their payroll is added to your policy.

Workers comp covers only work-related injuries and illnesses and is paid by the employer. Disability insurance covers non-work injuries and illnesses and is typically paid by the employee. Both replace a portion of lost wages during recovery.

The experience modification rate (EMR) adjusts your premium based on your claims history compared to similar businesses. An EMR below 1.0 earns a discount while above 1.0 means a surcharge. Fewer claims over three years will lower your EMR.

Premium = (Payroll ÷ 100) × Class Rate × Exp. Modifier

Apply schedule credits/debits for final premium

Published byJere Salmisto· Founder, CalcFiReviewed byCalcFi EditorialEditorial standardsMethodologyLast updated May 13, 2026

Primary sources & authoritative references

Every formula on this page traces to a federal agency, central bank, or peer-reviewed institution. We cite the rule-makers, not secondhand blogs.

  • USA.gov — Money and consumer protection — U.S. General Services Administration (opens in new tab)

Found an error in a formula or source? Report it →

Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.