Wa State Mileage Rate 2025. You can use this mileage reimbursement calculator to determine the deductible costs associated with running a vehicle for medical, charitable, business, or moving. Click on any county for a detailed breakdown of the per diem.
The washington state department of labor & industries (l&i) has adopted a 4.9 percent increase in the average worker’s compensation premium rate for 2025. Within its total area of 71,299 square miles, there is an average of 101.2 people for every square mile of washington state territory.