The 2025 statutory rates that drive employer costs — and any PEO quote — in Washington.
| SUI wage base | $72,800 | estimate |
| SUI new-employer rate | 1.60% | estimate |
| SUI cost per employee (at new-employer rate) | $1,040/yr | |
| FUTA effective rate | 0.6% | verified |
| Workers' comp index (per $100 payroll) | $1.20 | estimate |
| FICA (federal, all states) | 7.65% | verified |
Note: Washington runs a monopolistic state workers' comp fund — coverage is purchased from the state, and PEO master policies work differently here than in open-market states.
The workers' comp index is a payroll-weighted average — your actual rate depends on class-code mix. Office-heavy firms run well below the index; construction and transportation run well above it.