Payroll taxes (contributions) generally finance unemployment insurance (UI) benefits. An employer's tax rate includes an experience rated factor (experience rating), a social-cost factor (social tax), and under certain conditions, a solvency surcharge. Some entities may qualify as reimbursable employers, and reimburse the Employment Security Department for UI benefits actually paid instead of making payroll taxes.
In each rate year, the amount of wages subject to tax for each individual shall be 115 percent of the amount of wages subject to tax for the previous year rounded to the next lower $100, except that the amount of wages subject to tax in any rate year may not exceed 80 percent of the average annual wage for contributions purposes for the second preceding calendar year rounded to the next lower $100.
The average annual wage for contributions purposes is the quotient derived by dividing by three the total remuneration reported by all employers subject to contributions for the preceding three consecutive calendar years and dividing this amount by the average number of workers reported for all months of these three years by these same employers, and if the result is not a multiple of $1, rounding the result to the next lower multiple of $1.
In each rate year, the maximum amount of wages subject to tax for each individual is the lessor of:
Consumer price index means the consumer price index for the Seattle, Washington area for urban wage earners and clerical workers, all items, compiled by the United States Department of Labor's Bureau of Labor Statistics.