Washington Mileage Reimbursement Rules
Washington mileage guide covering private-employer discretionary policies, minimum wage protections, and official state travel rates.
Short answer
Washington state law does not generally require private employers to reimburse employees for mileage or travel expenses (Washington L&I). However, two major exceptions exist: (1) if required vehicle expenses drop an employee's effective wage below the Washington Minimum Wage (RCW 49.46), reimbursement becomes legally mandatory; and (2) Washington state government employees are reimbursed under SAAM Chapter 10 at 72.5¢ per mile in 2026.
At a glance
- Washington Department of Labor & Industries (L&I) rules state expense reimbursements (gas, mileage, parking) are discretionary benefits for private employers.
- The Minimum Wage Kickback Rule: Under RCW 49.46.020 & WAC 296-128-532, unreimbursed vehicle costs cannot drop an employee's pay below Washington's state minimum wage ($16.66+/hr or higher local municipal rates like Seattle).
- Washington OFM (Office of Financial Management) mandates 72.5¢/mile for state officials and public employees under SAAM Chapter 10 in 2026.
- Private employers who establish a written mileage reimbursement policy must adhere to their written terms under Washington wage payment laws.
Washington Private Employers vs. State Government Rules
Washington state mileage reimbursement searches split between two very different legal frameworks:
| Sector | Reimbursement Status | Applicable Law / Regulation | 2026 Rate Standard |
|---|---|---|---|
| Private Employers (General) | Discretionary / Policy-based | Washington L&I Administrative Policy ES.A.1 | Employer defined or IRS rate (72.5¢ / 76¢) |
| Private Employers (Low-Wage Workers) | Mandatory if wage floor breached | Washington Minimum Wage Act (RCW 49.46.020) | Sufficient to keep pay ≥ state/local minimum wage |
| Washington State Employees | Mandatory official travel | Washington OFM SAAM Chapter 10 (Travel) | 72.5¢ per mile (as of Jan 1, 2026) |
Washington state mileage reimbursement rules for private sector vs state government workers.
The Washington State Minimum Wage Protection Rule
While Washington lacks a broad indemnification statute like California Labor Code §2802, the Washington Minimum Wage Act prohibits 'kickbacks' where employee expenses reduce wages below minimum wage.
Example: If an employee earns $17.50/hour in a jurisdiction with a $16.66/hour minimum wage, and drives 30 miles in an 8-hour shift without reimbursement (costing ~$22.50 in vehicle wear and fuel), their effective wage is reduced below the legal minimum. The employer is legally obligated under RCW 49.46 to reimburse that expense deficit.
Key Elements of a Washington Mileage Claim
- Detailed travel log containing date, beginning and ending destinations, and business reason.
- Clear exclusion of everyday commute from home to primary reporting worksite.
- Separate expense lines and receipts for toll bridges (e.g., SR 520, Tacoma Narrows) and parking fees.
- Submission to payroll within the designated company expense cycle.
Official references
Official Washington L&I policy on employee per diem and mileage expense rules.
Official Washington State Administrative & Accounting Manual per diem and mileage tables.
Statutory protections against wage-reducing required job expenditures.
Common questions
Does Washington state require employers to pay mileage reimbursement?
Generally, no. Washington state law does not mandate mileage reimbursement for private employers, provided unreimbursed driving costs do not reduce the worker's net hourly earnings below the Washington state or local municipal minimum wage.
What is the Washington state employee mileage rate for 2026?
Under the Washington Office of Financial Management (OFM) SAAM Chapter 10, the privately owned vehicle mileage rate for state employees is 72.5 cents per mile as of January 1, 2026.
Are bridge tolls (like SR 520 or Tacoma Narrows) reimbursable in Washington?
For state workers, tolls are reimbursable as separate incidental expenses. For private employers, company travel policies should explicitly reimburse necessary bridge and highway tolls upon receipt submission.
Continue with tools
Calculate estimated reimbursement, review official rate tables, or download log templates.