Washington Workers Comp Calculator

Washington variant. This is a Washington-specific version of the Workers Comp Cost Estimator, using pre-defined local figures (tax rates, median home and income values, and typical regional costs). For the full formula, methodology, and FAQ, open the main Workers Comp Cost Estimator.

Workers' compensation premiums in Washington are priced per $100 of payroll, by job classification. On a $90,325 salary at an illustrative $1.00 rate, the annual premium is about $903.

How Washington workers' comp is priced

Premium = (payroll ÷ 100) × class rate × experience modifier. Clerical roles carry low rates; construction and trucking carry much higher ones.

Washington sets its own rules and rates. The calculator above lets you enter your real payroll, class rate, and mod factor for an accurate Washington estimate.

About taxes and housing in Washington

Washington levies no tax on wage income but does impose a tax on certain long-term capital gains above a high threshold.

Washington's effective property tax rate is near 0.84%, with median home values among the highest in the country around $615,000.

Washington's economy is powered by technology, aerospace, and global trade, with major employers based in the Seattle area.

Worked example: $90,325 payroll

($90,325 ÷ 100) × $1.00 = $903/year at a sample clerical rate. A construction class rate of $8.00 would make it $7,226.

Quick reference

  • State income tax: No state income tax (7% capital gains tax over $250K)
  • State sales tax: 6.5% (plus 2.79% avg local)
  • Median home value: $615,000
  • Median household income: $90,325
  • Effective property tax rate: 0.84%
  • Avg auto insurance: $1,366/yr

Frequently Asked Questions

How is workers' comp calculated in Washington?

By payroll ÷ 100 × class rate × experience modifier, using Washington's approved rates.

Is workers' comp required in Washington?

Most Washington employers must carry coverage once they have employees; rules vary by industry and headcount.

Open the full Workers Comp Cost Estimator