Seattle Mileage Tracking and Reimbursement Guide

Seattle drivers operate in an unusual combination: no state income tax, plus a city ordinance that treats expense reimbursement as compensation. That makes the federal mileage deduction the primary tax-saving lever for self-employed drivers, while W-2 drivers working inside city limits have a reimbursement route most US workers do not.

Washington reimbursement law

Washington has no statewide statute requiring employers to reimburse business mileage. What Seattle workers have instead is municipal: the Seattle Wage Theft Ordinance (SMC 14.20) counts reimbursement for employer expenses as compensation owed on every regular pay day, enforced by the Office of Labor Standards. Outside city limits, reimbursement is a matter of employer policy. Full Washington reimbursement guide.

No state income tax

Washington has no state personal income tax (one of nine US states). For self-employed Seattle drivers, the federal mileage deduction saves you federal income tax + 15.3 percent self-employment tax. State tax savings do not apply (because no state tax exists). The federal-only savings are still substantial.

Seattle-specific industries

• Tech contractors (Amazon, Microsoft, Boeing supplier ecosystem) often paid 1099 with mixed-mileage profiles
• Rideshare and delivery in the dense urban core plus eastside suburbs
• Real estate agents covering King County and beyond
• Mobile trades and services across Seattle and bedroom communities
• Maritime and aerospace field workers commuting to industrial sites

Common professions in Seattle with high mileage

• Uber drivers and Lyft drivers
• DoorDash drivers
• Real estate agents. King County is large
• Electricians, plumbers, HVAC technicians
• Tech consultants paid 1099 covering multiple Seattle-area employer sites

What Seattle W-2 drivers should know

The federal W-2 mileage deduction was suspended by the 2017 Tax Cuts and Jobs Act starting in 2018, and the One Big Beautiful Bill made that permanent rather than creating it. Reimbursement, and inside Seattle the Wage Theft Ordinance, is the remaining path. Document mileage with a contemporaneous log and submit reimbursement requests on your employer's schedule.

Tips for Seattle drivers

• Track ferry tolls separately if you cross Puget Sound regularly for work
• Document trips across SR 520 and I-90 toll lanes. Tolls are deductible separately
• Multi-county trades workers should support high mileage figures with odometer evidence

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